Abstract:
A cyanoketone derivatives of the following formula (1) ##STR1## which are characterized by excellent herbicidal activity and effectiveness against a variety of broad leafed weeds, including barnyard grass, green foxtail, velvet leaf, livid amaranth and hairy beggar ticks.

Description:
DETAILED DESCRIPTION OF THE INVENTION 
     The present invention relates to a novel cyanoketone derivative and a herbicide containing it as an active component. 
     A variety of compounds have been tested on their herbicidal activities, and many herbicidal compounds are commercially available. 
     For example, Japanese Laid-open Patent Application (Kokai) No. 14,503/1982 discloses a nitrodiphenyl ether compound of the following formula (2) ##STR2## wherein X is halogen, hydrogen, a trifluoromethyl group, a C 1  -C 4  alkyl group, a cyano group or a nitro group, Y is halogen, hydrogen or a trifluoromethyl group, W is oxygen or S(O) p  in which p is 0 to 2, R is a C 1  -C 4  alkyl group, a phenyl group, a halogen-substituted phenyl group, a trifluoromethyl-substituted phenyl group or a mononuclear aralkyl group having up to 12 carbon atoms, Q is (CH 2 ) n  in which n is 0 to 4 or a C 2  -C 6  alkenylene group, and Z is --CO 2  R 1 , --C 2  H, --CO 2 , --CONH 2 , --CONHR 1 , --COSR 1 , --CON(R 1 ) 2 , --CN, --CH 2  OH, --CH 2  Cl, --COR 1 , --OR 1  CH 2  OCH 3  or --CO(CR 2  R 3 ) m  CO 2  R 1  in which R 1  is a C 1  -C 4  alkyl group, a C 3  -C 6  alkenyl group, a C 1  -C 4  cyanoalkyl group, a C 3  -C 6  alkynyl group, a C 2  -C 4  haloalkyl group, a C 1  -C 4  alkoxyalkyl group, a trifluoromethyl group, a C 2  -C 4  nitroalkyl group or a mononuclear aralkyl group having up to 12 carbon atoms, each of R 2  and R 3  is independently hydrogen or a methyl group, and m is an integer of 1 to 3, 
     and that said nitrodiphenyl ether compound has a herbicidal activity on weeds such as barnyardgrass, Bromus pauciflorus, nutgrass, broad cocklebur and African marigold. 
     On the other hand, Japanese Laid-open Patent Application No. 11452/1985 discloses α-cyanoketones of the following formula (3) ##STR3## which are a compound of the above formula (3) in which R 1  is an alkyl group or an aromatic group and R 2  is an alkyl group having at least 3 carbon atoms, an aralkyl group, an aromatic group or a heterocyclic group and a compound of the formula (6) in which R 1  is a heterocyclic group, a substituted phenoxy or substituted thiophenoxy group and R 2  is a hydrogen atom, an alkyl group, an aromatic group or a heterocyclic group, 
     and that such α-cyanoketones has a herbicidal activity on a variety of weeds such as southern crabgrass, barnyardgrass, tufted knotweed and slender amaranth when these are applied in a high dosage (foliar application test). 
     Some of the present inventors have found a cyanoketone derivative and herbicide containing it as an active component represented by the following formula (4) and have already proposed this finding (see U.S. Pat. No. 5,234,894). 
     The cyanoketone derivative of the following formula (4) has remarkably high herbicidal activity and is effective against a variety of gramineous weeds. Examples of the weeds against which the herbicidal activity is generally effective include upland soil gramineous weeds such as fall panicum, green foxtail, sorghum, wild oat, Japanese brome, water foxtail, annual bluegrass, barnyardgrass, Johnsongrass, quackgrass, southern crabgrass, goosegrass, Italian ryegrass, burmudagrass and knotgrass. ##STR4## wherein A 1  is a substituted or unsubstituted phenyl or naphthyl group, or a substituted or unsubstituted heterocyclic group selected from the group consisting of a 5-membered ring, a 6-membered ring, a 5- and 6-membered fused ring group and a 6- and 6-membered fused ring group, substituents of said substituted phenyl, naphthyl and heterocyclic groups being selected from the group consisting of a halogen atom, an alkyl group having 1 to 4 carbon atoms, a halogenoalkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms, and alkoxycarbonyl group having 1 to 6 carbon atoms, a nitro group and a cyano group; 
     each of X 1 , X 2  and X 3  is independently an oxygen or sulfur atom; each of B 1 , B 2  and B 3  is independently a hydrogen atom or alkyl group having 1 to 6 carbon atoms; each of Y 1 , Y 2 , Y 3  and Y 4  is independently a hydrogen atom, a halogen atom or alkyl group having 1 to 6 carbon atoms; and A 2  is substituted or unsubstituted group selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkynyl group having 2 to 6 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms and an alkoxycarbonyl group having 1 to 6 carbon atoms, substituents of said substituted groups being selected from the group consisting of a halogen atom, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms, a tetrahydrofuryl group and a cyano group; and unsubstituted benzoyl group; a halogen substituted benzoyl group; a cyano group of the group as defined in A 1  ; 
     provided that when B 1  is a hydrogen atom and B 2  is alkyl, the compound of the formula (4) is an R- or S-enantiomers with regard to the asymmetric carbon to which B 1  and B 2  are bonded or a mixture of these enantiomers. 
     It is an object of the present invention to provide a novel cyanoketone derivative. 
     It is another object of the present invention to provide a herbicide containing the cyanoketone derivative of the present invention as a herbicidal active component. 
     It is further another object of the present invention to provide a novel cyanoketone derivative which exhibits high selectivity and high herbicidal activity and a herbicide containing this derivative. 
     It is still further another object of the present invention to provide a herbicide which has high herbicidal activity on broad-leaved weeds even when used in a low dosage and which is much safe even when applied to intended crop in a high dosage. 
     Other objects and advantages of the present invention will be apparent from the following description. 
     According to the present invention, the above objects and advantages of the present invention are achieved, first, by a cyanoketone derivative of the following formula (1) ##STR5## wherein A 1  is a substituted or unsubstituted phenyl or naphthyl group, or a substituted or unsubstituted heterocyclic group selected from the group consisting of a 5-membered ring, a 6-membered ring, a 5- and 6-membered fused ring group and a 6- and 6-membered fused ring group, substituents of said substituted phenyl, naphthyl and heterocyclic groups being selected from the group consisting of a halogen atom, an alkyl group having 1 to 4 carbon atoms, a halogenoalkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms, and an alkoxycarbonyl group having 1 to 6 carbon atoms in alkyl moiety, a nitro group and a cyano group; 
     each of X 1  and X 2  is independently an oxygen or sulfur atom; each of B 1 , B 2  and B 3  is independently a hydrogen atom or alkyl group having 1 to 6 carbon atoms; 
     Y 1  is a hydrogen atom, a nitro group or a halogen atom; 
     each of Y 2 , Y 3  and Y 4  is independently a hydrogen atom, a halogen atom or an alkyl group having 1 to 6 carbon atoms; 
     A 2  is a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkynyl group having 2 to 6 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms, alkoxycarbonyl group having 1 to 6 carbon atoms in alkyl moiety, a cyano group, a substituted or unsubstituted benzoyl group, a group as defined in A 1  or a group of ##STR6## substituents of said substituted alkyl group and said substituted benzoyl group are selected from the group consisting of a halogen atom, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms, a cyano group and a tetrahydrofuryl group; 
     each of A 3  and A 4  is independently selected from the group consisting of a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkynyl group having 2 to 6 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms, an alkoxycarbonyl group having 1 to 6 carbon atoms in alkyl moiety and a group as defined in A 1  ; 
     and both A 3  and A 4  can form saturated or unsaturated ring which may contain a hetero atom; 
     provided that when one of B 1  or B 2  is a hydrogen atom and the other is alkyl, the compound of the formula (1) is an R- or S-enantiomers with regard to the asymmetric carbon to which B 1  and B 2  are bonded or a mixture of these enantiomers. 
     The cyanoketone derivative represented by the formula (1) of the present invention has a strong selective herbicidal activity compared to the cyanoketone derivative of the formula (4) which is described in said U.S. Pat. No. 5,234,894, and therefore exhibits a herbicidal activity to a variety of broad-leaved weeds in a smaller amount. 
     In the above formula (1), A 1  is a substituted or unsubstituted aromatic group, or a substituted or unsubstituted heterocyclic group. 
     The aromatic group preferably includes phenyl and naphthyl. 
     The heterocyclic group preferably includes five-membered or six-membered cyclic groups having at least one hereto atom selected from the group consisting of oxygen, sulfur and nitrogen atoms. 
     Examples of such heterocyclic groups preferably include 5-membered cyclic groups such as furyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, thiazolyl, isoxazolyl and isothiazolyl groups; 6-membered ring groups such as pyridyl, pyranyl, thiopyranyl, piperazinyl, pyrimidinyl, triazinyl and cyclohexenyl groups; 5- and 6-membered fused ring groups such as benzofuranyl, benzothienyl, indolyl, benzoimidazolyl, benzothiazolyl, benzoxazolyl, oxazolopyridinyl and thiazolopyridinyl groups; and 6- and 6-membered fused ring groups-such as quinolyl, quinoxalinyl and quinazolinyl groups. 
     The substituent which may be substituted on these aromatic and heterocyclic groups includes a halogen atom such as chlorine, bromine, iodine and fluorine; an alkyl group having 1 to 4 carbon atoms such as methyl, ethyl, propyl and butyl; a halogenoalkyl group having 1 to 4 carbon atoms such as chloromethyl, difluoromethyl, trifluoromethyl, trifluoroethyl, perfluoroethyl, pentachloropropyl and perfluorobutyl; an alkoxy group having 1 to 4 carbon atoms such as methoxy, ethoxy, propoxy and butoxy; an alkylthio group having 1 to 4 carbon atoms such as methylthio, ethylthio, propylthio and butylthio; an alkoxycarbonyl group having 1 to 6 carbon atoms in alkyl moiety, such as methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl and butoxycarbonyl; a nitro group; and a cyano group. These substituents are preferred particularly in an industrial point of view. 
     With respect to A 1 , the substituted or unsubstituted phenyl group gives a higher herbicidal activity than the other groups. A compound in which a phenyl group is substituted with a halogen atom and/or a halogenoalkyl group shows an especially high herbicidal activity. 
     In the formula (1), each of X 1  and X 2  is, independently of the other, an oxygen or sulfur atom. In particular, an oxygen atom is preferred. 
     In the formula (1), each of B 1 , B 2  and B 3  is, independently of the others, a hydrogen atom or alkyl. The alkyl preferably include a linear or branched alkyl group having 1 to 6 carbon atoms such as methyl, ethyl, propyl, butyl, heptyl and hexyl. 
     With respect to B 1  and B 2 , a compound in which one of B 1  and B 2  is a hydrogen atom and the other is an alkyl group is especially preferable. It is preferred that B 3  is a hydrogen atom. 
     In the formula (1), Y 1  is a hydrogen atom, a nitro group or a halogen atom and in particular a nitro group or a halogen atom is preferred. 
     In the formula (1), each of Y 2 , Y 3  and Y 4  is, independently of the others, a hydrogen atom, a halogen atom or alkyl group and in particular a hydrogen atom is preferred. 
     In Y 1 , Y 2 , Y 3  or Y 4 , the halogen atom includes chlorine, bromine, iodine and fluorine. The alkyl may be linear or branched, and is preferably selected from an alkyl group having 1 to 6 carbon atoms such as methyl, ethyl, propyl, butyl, heptyl and hexyl. 
     In the formula (1), A 2  is a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkynyl group having 2 to 6 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms, an alkoxycarbonyl group having 1 to 6 carbon atoms in alkyl moiety, a cyano group, a substituted or unsubstituted benzoyl group, a group as defined in A 1 , or a group of ##STR7## 
     The alkyl group includes those specified concerning Y 2 . 
     The substituent which may be substituted on the alkyl preferably includes a halogen atom, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms, a tetrahydrofuryl group and a cyano group. 
     The alkyl group preferably includes methyl, ethyl, propyl, butyl, heptyl and buthoxy. 
     The alkenyl group preferably includes ethenyl, propenyl, butenyl, pentenyl and hexenyl. 
     The alkynyl group preferably includes ethynyl, propenyl, butynyl and hexynyl. 
     The alkoxy group preferably includes methoxy, ethoxy, propoxy and buthoxy. 
     The alkylthio group preferably includes methylthio, ethylthio, propylthio and butylthio. 
     The alkoxycarbonyl group preferably includes methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl and butoxycarbonyl. 
     The substituent which may be substituted on benzoyl group preferably includes a halogen atom, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms, a tetrahydrofuryl group and a cyano group. 
     Furthermore, A 2  can be a substituted or unsubstituted phenyl or naphthyl group, or a substituted or unsubstituted heterocyclic group as defined in A 1  or a group of ##STR8## 
     in the group of ##STR9## each of A 3  and A 4  is independently selected from the group consisting of a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkynyl group having 2 to 6 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms and an alkoxycarbonyl group having 1 to 6 carbon atoms in alkyl moiety, and a group as defined in A 1  ; and both A 3  and A 4  can form saturated or unsaturated ring which may contain a hetero atom. 
     The alkyl group includes those specified concerning Y 2 . 
     The substituent which may be substituted on the alkyl preferably includes a halogen atom, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms, a tetrahydrofuryl group and a cyano group. 
     The alkyl group preferably includes methyl, ethyl, propyl, butyl, heptyl and buthoxy. 
     The alkenyl group preferably includes ethenyl, propenyl, butenyl, pentenyl and hexenyl. 
     The alkynyl group preferably includes ethynyl, propynyl, butynyl, pentynyl and hexynyl. 
     The alkoxy group preferably includes methoxy, ethoxy, propoxy and buthoxy. 
     The alkylthio group preferably includes methylthio, ethylthio, propylthio and butylthio. 
     The alkoxycarbonyl group preferably includes methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl and butoxycarbonyl. 
     When A 3  and A 4  together form a saturated or unsaturated ring which may contain a hetero atom, a nitrogen atom or an oxygen atom is used as the hetero atom and further an alkyl chain or an alkynyl chain required for forming a ring having 2 to 8 carbon atoms is preferably used. Specific examples of a cyclic group formed by A 3  and A 4  with the nitrogen atom bonded to A 3  and A 4  include ethyleneimino, pyrrolidyl, pyrrolyl, pyrrolinyl, pyrazyl, pyrazolinyl, imidazolyl, triazolyl, piperidino, morpholino, piperazinyl, indolyl and plynyl groups. 
     Among the above-described definitions of A 3  and A 4 , the compound in which A 3  and A 4  together form the above ring is preferred because of its high herbicidal activity. 
     It Is preferred that A 2  of the formula (1) is a substituted or unsubstituted phenyl group or a group ##STR10## in which A 3  and A 4  together form a saturated or unsaturated ring which may contain a hetero atom. 
     Further, in the compound of the present invention, when one of B 1  and B 2  is a hydrogen atom and the other is an alkyl group, the compound of the formula (1) is an R- or S-enantiomer with regard to the asymmetric carbon to which B 1  and B 2  are bonded or a mixture of these enantiomers. 
     The compound of the above formula (1) preferably include the following compounds. 
     (100) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(2-pyridyl)pentanenitrile 
     (102) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(2,4-dichlorophenyl)-2-pentanenitrile 
     (104) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-nitrophenoxy!-3-oxo-2-(3,4-dichlorophenyl)pentanenitrile 
     (106) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(2,6-dichlorophenyl)pentanenitrile 
     (108) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(3-chlorophenyl)pentanenitrile 
     (110) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(3-bromophenyl)pentanenitrile 
     (112) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2(3-nitrophenoxy!-3-oxo-2-phenylpentanenitrile 
     (114) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(3-methylphenyl)pentanenitrile 
     (116) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(4,6-dichloro-2-pyrimidyl)pentanenitrile 
     (118) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(3-methoxymethylphenyl)pentanenitrile 
     (120) 4- 5-(2,4-dichlorophenoxy)-2-nitrophenoxy!-3-oxo-2-methylpentanenitrile 
     (122) 4- 5-(2-fluoro-4-chlorophenoxy)-2-nitrophenoxy!-3-oxo-2-cyanopentanenitrile 
     (124) 4- 5-(6-trifluoromethyl-2-naphtoxy)-2-nitrophenoxy!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (126) 4- 5-(7-chloro-2-naphtoxy)-2-nitrophenoxy!-3-oxo-2-(3-chlorophenyl)pentanenitrile (128) 4- 5-(7-methoxy-2-naphtoxy)-2-nitrophenoxy!-3-oxo-2-(5-methyl-2-thienyl)pentanenitrile 
     (130) 4- 5-(6-chloro-2-quinoxalinyloxy)-2-nitrophenoxy!-3-oxo-2-(1-tetrahydrofurfuryl)pentanenitrile 
     (132) 4- 5-(6-chloro-2-quinoxalinyloxy)-2-nitrophenoxy!-3-oxo-2-(3-trifluoromethylphenyl)pentanenitrile 
     (134) 4- 5-(6-chloro-2-quinoxalinyloxy)-2-nitrophenoxy!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (136) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(2,4-diclorophenyl)butyronitrile 
     (138) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(2,4-diclorophenyl)-2-methylpentanenitrile 
     (140) 4- 5-(2-chloro-4-methylphenoxy)-2-nitrophenoxy!-3-oxo-2-benzoylpentanenitrile 
     (142) 4- 5-(2-chloro-4-nitrophenoxy)-2-nitrophenoxy!-3-oxo-2-(3,4-dichlorophenyl)pentanenitrile 
     (144) 4- 5-(4-trifluoromethylphenylthio)-2-nitrophenoxy!-4-methyl-3-oxo-2-(2-propinyl)pentanenitrile 
     (146) 4- 5-(4-trifluoromethylphenylthio)-2-nitrophenylthio!-4-methyl-3-oxo-2-cyano-2-methylpentanenitrile 
     (148) 4- 5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)-2-nitrophenylthio!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (150) 4- 5-(5-trifluoromethyl-2-pyridyloxy)-2-nitrophenoxy!-3-oxo-2-(2-chloro-4-methylphenyl)pentanenitrile 
     (152) 4- 5-(3-chloro-5-fluoro-2-pyridyloxy)-2-nitrophenylthio!-3-oxo-2-methylthiomethylbutyronitrile 
     (154) 4- 5-(5-fluoro-3-methyl-2-pyridyloxy)-2-nitrophenylthio!-4-methyl-3-oxo-2-trifluoromethylbutyronitrile 
     (156) 4- 5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)-2-nitrophenoxy!-4-methyl-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (158) 4- 5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)-2-nitrophenoxy!-4-methyl-3-oxo-2-(2,4-dichlorophenyl)-2-methylpentanenitrile 
     (160) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(pyrrolidinylcarbonyl)pentanenitrile 
     (162) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (164) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2- (1-cycloheptylamino)carbonyl!pentanenitrile 
     (166) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(morpholinocarbonyl)pentanenitrile 
     (168) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(4-methylpiperidinocarbonyl)pentanenitrile 
     (170) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(N-methoxycarbonyl-N-methylaminocarbonyl)pentanenitrile 
     (172) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(N,N-dimethylaminocarbonyl)pentanenitrile 
     (174) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(N-methyl-N-phenylaminocarbonyl)pentanenitrile 
     (176) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(N-ethyl-N-phenylaminocarbonyl)pentanenitrile 
     (178) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(N-isopropyl-N-phenylaminocarbonyl)pentanenitrile 
     (180) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(3,5-dimethylpiperidino carbonyl)pentanenitrile 
     (182) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2- N-methyl-N-(2,4-dichlorophenyl)aminocarbonyl!pentanenitrile 
     (184) 4- 5-(6-chloro-2-quinoxalinyloxy)-2-nitrophenoxy!-3-oxo-2-(N-ethoxymethyl-N-methylaminocarbonyl)pentanenitrile 
     (186) 4- 5-(6-trifuoromethyl-2-naphthoxy)-2-nitrophenoxy!-3-oxo-2-(N-methoxyethyl-N-methylaminocarbonyl)pentanenitrile 
     (188) 4- 5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)-2-nitrophenoxy!-3-oxo-2-(N-methylaminocarbonyl)pentanenitrile 
     (190) 4- 5-(6-chloro-2-quinoxalinyloxy)-2-nitrophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (192) 4- 5-(6-chloro-2-quinoxalinyloxy)-2-nitrophenoxy!-3-oxo-2-(N-ethyl-N-methoxyaminocarbonyl)pentanenitrile 
     (194) 4- 5-(2-benzothiazolyl)-2-nitrophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (196) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(2-pyridyl)pentanenitrile 
     (198) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (200) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(3,4-dichlorophenyl)pentanenitrile 
     (202) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(2,6-dichlorophenyl)pentanenitrile 
     (204) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(3-chlorophenyl)pentanenitrile 
     (206) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(3-bromophenyl)pentanenitrile 
     (208) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-phenylpentanenitrile 
     (210) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(3-methylphenyl)pentanenitrile 
     (212) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(4,6-dichloro-2-pyrimidyl)pentanenitrile 
     (214) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(3-methoxymethylphenyl)pentanenitrile 
     (216) 4- 5-(2,4-dichlorophenoxy)-2-chlorophenoxy!-3-oxo-2-methylpentanenitrile 
     (218) 4- 5-(2-fluoro-4-chlorophenoxy)-2-chlorophenoxy!-3-oxo-2-cyanopentanenitrile 
     (220) 4- 5-(6-trifluoromethyl-2-naphtoxy)-2-chlorophenoxy!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (222) 4- 5-(7-chloro-2-naphtoxy)-2-chlorophenoxy!-3-oxo-2-(3-chlorophenyl)pentanenitrile 
     (224) 4- 5-(7-methoxy-2-naphtoxy)-2-chlorophenoxy!-3-oxo-2-(5-methyl-2-thienyl)pentanenitrile 
     (226 ) 4- 5-(6-chloro-2-quinoxalinyloxy)-2-chlorophenoxy!-3-oxo-2-(1-tetrahydrofurfuryl)pentanenitrile 
     (228 ) 4- 5-(6-chloro-2-quinoxalinyloxy)-2-chlorophenoxy!-3-oxo-2-(3-trifluoromethylphenyl)pentanenitrile 
     (230) 4- 5-(6-chloro-2-quinoxalinyloxy)-2-chlorophenoxy!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (232) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(2,4-diclorophenyl)butyronitrile 
     (234) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(2,4-diclorophenyl)-2-methylpentanenitrile 
     (236) 4- 5-(2-chloro-4-methylphenoxy)-2-chlorophenoxy!-3-oxo-2-benzoylpentanenitrile 
     (238) 4- 5-(2-chloro-4-nitrophenyl)-2-chlorophenoxy!-3-oxo-2-(3,4-dichlorophenyl)pentanenitrile 
     (240) 4- 5-(4-trifluoromethylphenylthio)-2-chlorophenoxy!-4-methyl-3-oxo-2-(2-propinyl)pentanenitrile 
     (242) 4- 5-(4-trifluoromethylphenylthio)-2-chlorophenylthio!-4-methyl-3-oxo-2-cyano-2-methylpentanenitrile 
     (244) 4- 5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)-2-chlorophenylthio!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (246) 4- 5-(5-trifluoromethyl-2-pyridyloxy)-2-chlorophenoxy!-3-oxo-2-(2-chloro-4-methylphenyl)pentanenitrile 
     (248) 4- 5-(5-fluoro-2-pyridyloxy)-2-chlorophenylthio!-3-oxo-2-methylthiomethylbutyronitrile 
     (250) 4- 5-(5-fluoro-3-methyl-2-pyridyloxy)-2-chlorophenylthio!-4-methyl-3-oxo-2-trifluoromethylbutyronitrile 
     (252) 4- 5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)-2-chlorophenoxy!-4-methyl-3-oxo-2-(2,4-dichlorophenyl)-pentanenitrile 
     (254) 4- 5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)-2-chlorophenoxy!-4-methyl-3-oxo-2-(2,4-dichlorophenyl)-2-methylpentanenitrile 
     (256) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(pyrrolidinylcarbonyl)pentanenitrile 
     (258) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (260) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2- (1-cycloheptylamino)carbonyl!pentanenitrile 
     (262) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(morpholinocarbonyl)pentanenitrile 
     (264) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(4-methylpiperidinocarbonyl)pentanenitrile 
     (266) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(N-methoxycarbonyl-N-methylaminocarbonyl)pentanenitrile 
     (268) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(N,N-dimethylaminocarbonyl)pentanenitrile 
     (270) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(N-methyl-N-phenylaminocarbonyl)pentanenitrile 
     (272) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(N-ethyl-N-phenylaminocarbonyl)-pentanenitrile 
     (274) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(N-isopropyl-N-phenylaminocarbonyl)pentanenitrile 
     (276) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2-(3,5-dimethylpiperidinocarbonyl)pentanenitrile 
     (278) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chlorophenoxy!-3-oxo-2- N-methyl-N-(2,4-dichlorophenyl)aminocarbonyl!pentanenitrile 
     (280) 4- 5-(6-chloro-2-quinoxalinyloxy)-2-chlorophenoxy!-3-oxo-2-(N-ethoxymethyl-N-methylaminocarbonyl)pentanenitrile 
     (282) 4- 5-(6-trifluoromethyl-2-naphthoxy)-2-chlorophenoxy!-3-oxo-2-(N-methoxyethyl-N-methylaminocarbonyl)pentanenitrile 
     (284) 4- 5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)-2-chlorophenoxy!-3-oxo-2-(N-methylaminocarbonyl)pentanenitrile 
     (286) 4- 5-(6-chloro-2-quinoxalinyloxy)-2-chlorophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (288) 4- 5-(6-chloro-2-quinoxalinyloxy)-2-chlorophenoxy!-3-oxo-2-(N-ethyl-N-methoxyaminocarbonyl)pentanenitrile 
     (290) 4- 5-(2-benzothiazolyl)-2-chlorophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (292) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2,4-dichlorophenoxy!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (294) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2,4-dichlorophenoxy!-3-oxo-2-(5-trifluoromethyl-2-pyridyl)pentanenitrile 
     (296) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2,4-dichlorophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (298) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-chloro-4-fluorophenoxy!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (300) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-4-chloro-2-fluorophenoxy!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (302) 4- 5-(2-chloro-4-trifluoromethylphenoxy)-4-chloro-2-nitrophenoxy!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (304) 4- 5-(2,4-dichlorophenoxy)-2-chloro-4-fluorophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (306) 4- 5-(2,4-dichlorophenoxy)-2,4-dichlorophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (308) 4- 5-(4-chloro-2-fluorophenoxy)-2,4-dichlorophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (310) 4- 5-(3-chloro-5-trifluoromethyl)-2-pyridyloxy!-3-oxo-2-(pyrrolidinylcarbonyl)pentanenitrile 
     (312) 4- 5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)-2-chloro-4-fluorophenoxy!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (314) 4- 5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)-2,4-dichlorophenoxy!-3-oxo-2-(2,4-(dichlorophenyl)pentanenitrile 
     (316) 4- 5-(6-trifluoromethyl-2-naphthoxy)-2-chloro-4-fluorophenoxy!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile 
     (318) 4- 5-(6-trifluoromethyl-2-naphthoxy)-2-chloro-4-fluorophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (320) 4- 5-(7-chloro-2-naphthoxy)-2-chloro-4-fluorophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (322) 4- 5-(7-chloro-2-naphthoxy)-2-chloro-4-fluorophenoxy!-3-oxo-2-(tetrahydrofurfuryl)pentanenitrile 
     (324) 4- 5-(6-chloro-2-quinoxalinyloxy)-2-chloro-4-fluorophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (326) 4- 5-(6-chloro-2-quinoxalinyloxy)-4-chloro-2-fluorophenoxy!-3-oxo-2-(piperidinocarbonyl)pentanenitrile 
     (328) 4- 3-(2-chloro-4-trifluoromethylphenoxy)phenoxy!-3-oxo-2-phenylpentane-nitrile 
     (330) 4- 3-(2-chloro-4-trifluoromethylphenoxy)phenoxy!-3-oxo-2-(3,4-dichlorophenyl)pentanenitrile 
     (332) 4- 3-(2-chloro-4-trifluoromethyllphenoxy)phenoxy!-3-oxo-2-(3-bromophenyl)pentanenitrile 
     (334) 4- 3-(2-chloro-4-trifluoromethylphenoxy)phenoxy!-3-oxo-2-(3-trifluoromethylphenyl)pentanenitrile 
     (336) 4- 3-(2-chloro-4-trifluoromethylphenoxy)phenoxy!-3-oxo-2-(4-methoxyphenyl)pentanenitrile 
     (338) 4- 3-(2-chloro-4-trifluoromethylphenoxy)phenoxy!-3-oxo-2-(4-hydroxyphenyl)pentanenitrile 
     (340) 4- 3-(2-chloro-4-trifluoromethylphenoxy)phenoxy!-3-oxo-2-(3-chlorophenyl)pentanenitrile 
     The above compounds are particularly industrially easily produced and have excellent herbicidal activity. 
     The cyanoketone derivative of the formula (1), provided by the present invention, can be structurally identified by measurements of infrared absorption spectrum (IR), mass spectrum (MS) and  1  H-nuclear magnetic resonance spectrum ( 1  H-NMR) and elemental analysis. Typical patterns thereof are as follows. 
     (i) In the measurement of the cyanoketone derivative of the formula (1) for infrared absorption spectrum (IR), a characteristic absorption based on the ether bond is observed at 1,070 to 1,232 cm -1 , and a characteristic absorption based on the cyano group is observed at 2,200 to 2,220 cm -1 . 
     (ii) The cyanoketone derivative of the formula (1) is measured for mass spectrum (MS), and its composition formula corresponding to each peak observed (generally, a value of m/e obtained by dividing an ion molecular weight, m, by a number of charge, e) is calculated, whereby the molecular weight of the cyanoketone compound and the bonding mode of each atomic group in the molecule can be determined. That is, when a sample measured has the formula (1), there are generally observed molecular ion peaks (to be abbreviated as &#34;M +  &#34; hereinafter) having strength according to an isotopic abundance depending upon the number of halogen atoms contained in the molecule, and the molecular weight of the sample therefore can be determined. Further, the molecular weight generally appears as a mass number of each ion derived from the sample which has been cleaved in positions indicated by dotted lines in the following formula (5) ##STR11## wherein A 1 , X 1 , X 2 , Y 1 , Y 2 , Y 3 , Y 4 , B 1 , B 2 , B 3  and A 2  are as defined above. 
     (iii) The bonding mode of hydrogen bonds in the compound of the present invention, represented by the above formula (1), can be determined by measurement of the compound for  1  H-nuclear magnetic resonance spectrum ( 1  H-NMR). That is, in the measurement of the compound of the formula (1) in a heavy chloroform solvent, a peak of methine substituted with a cyano group often appears at 5.20 to 5.90 ppm as a multiplet since the carbon atom to which the cyano group is bonded is an asymmetric carbon, and in spite of type of X 1 , X 2 , B 1 , B 2 , B 3  and A 2 , protons on the phenyl group show a multiplet at 6.00 to 7.50 ppm. 
     (iv) The weight of each of carbon, hydrogen and nitrogen (and halogen if contained) is determined by elemental analysis, and then by deducting the total sum of recognized weight percentages of these elements from 100, the weight percentage of oxygen can be determined. Accordingly, the composition formula of the compound can be determined. 
     The cyanoketone derivative of the present invention generally is a light yellow or yellowish brown viscous body or solid at room temperature under atmospheric pressure. 
     The cyanoketone derivative of the present invention is well-dissolved in organic solvents such as benzene, diethyl ether, ethyl alcohol, N,N-dimethylformamide, dimethylsulfoxide, methylene chloride, chloroform and carbon tetrachloride. However, it is slightly soluble or insoluble in hexane, heptane and water. 
     The cyanoketone derivative of the formula (1), provided by the present invention, can be produced by any of the following methods (a), (b), (c), (d) and (e). 
     (a) A method in which a compound of the following formula (6) ##STR12## wherein A 1 , X 1 , X 2 , Y 2 , Y 3  and Y 4  are as defined in the formula (1), and M is a hydrogen atom or an alkali metal, 
     and a compound of the following formula (7) ##STR13## wherein Z is a halogen atom, and B 1 , B 2 , B 3  and A 2  are as defined in the formula (1), 
     are allowed to react in the presence or absence of a solvent. 
     (b) A method in which an ester derivative of the following formula (8) ##STR14## wherein R is an alkyl group, and A 1 , X 1 , X 2 , Y 1 , Y 2 , Y 3 , Y 4 , B1 and B 2  are as defined in the formula (1), 
     and a cyano derivative of the following formula (9) ##STR15## wherein B 3  and A 2  are as defined in the formula (1), are allowed to react in the presence or absence of a solvent. 
     (c) A method in which a compound of the following formula (10) 
     
         A.sub.1 --Z                                                (10) 
    
     wherein Z is a halogen atom and A 1  is as defined in the above formula (1), 
     and a compound of the following formula (11) ##STR16## wherein M is a halogen atom or an alkyl metal, X 1 , X 2 , Y 1 , Y 2 , Y 3 , Y 4 , B 1 , B 2 , B 3  and A 2  are as defined in the formula (1), 
     are allowed to react in the presence or absence of a solvent. 
     (d) A method in which an acid halide of the following formula (12) ##STR17## wherein Z is a halogen atom and A 1 , B 1 , B 2 , X 1 , X 2 , Y 1 , Y 2 , Y 3  and Y 4  are as defined in the formula (1), 
     and a compound of the above formula (9) are allowed to react in the presence or absence of a solvent. 
     (e) When A 2  in the formula (1) is a group of ##STR18## wherein A 3  and A 4  are as defined in the formula (1), a method in which an acid halide of the following formula (13) ##STR19## wherein Z is a halogen atom and A 1 , B 1 , B 2 , B 3 , X 1 , X 2 , Y 1 , Y 2 , Y 3  and Y 4  are as defined in the formula (1), 
     and a compound of the following formula (14) 
     
         A.sub.3 --NH--A.sub.4                                      (14) 
    
     wherein A 3  and A 4  are as defined in the formula (1), 
     are allowed to react in the presence or absence of a solvent. 
     In the above method (a), the feed molar ratio of the compounds of the formulae (6) and (7) may be properly determined as required. In general, these compounds are used in an equimolar amount or one of these is used in a little excess, for example, in an amount that is greater than the amount of the other by not more than 20%. 
     In the above method (b), the feed molar ratio of the ester derivative of the formula (8) and the cyano derivative of the formula (9) may be properly determined as required. In general, these compounds are used in an equimolar amount or one of these is used in a little excess, for example, in an amount that is greater than the amount of the other by not more than 20%. 
     In the above method (c), the feed molar ratio of the compounds of the formulae (10) and (11) may be properly determined as required. In general, these compounds are used in an equimolar amount or one of these is used in a little excess, for example, in an amount that is greater than the amount of the other by not more than 20%. 
     In the above method (d), the feed molar ratio of the acid halide of the formula (12) and the compound of the formula (9) may be properly determined as required. In general, these compounds are used in an equimolar amount or one of these is used in a little excess, for example, in an amount that is greater than the amount of the other by not more than 20%. 
     In the above method (e), the feed molar ratio of the acid halide of the formula (13) and the compound of the formula (14) may be properly determined as required. In general, these compounds are used in an equimolar amount or one of these is used in a little excess, for example, in an amount that is greater than the amount of the other by not more than 20%. 
     The solvent each in the above methods (a) to (c) is not specially limited, and can be selected from known solvents. Typical examples of the solvent include alcohols such as methanol and ethanol; ethers such as diethyl ether, dimethoxyethane, tetrahydrofuran and dioxane; aromatic solvents such as benzene and toluene, chlorine-containing solvents such as methylene chloride, chloroform and carbon tetrachloride; N,N-dimethylformamide; dimethylsulfoxide; and sulfolane. 
     The solvent each in the above methods (d) and (e) is not specially limited, and can be selected from known solvents. Typical examples of the solvent include ethers such as diethyl ether, dimethoxyethane, tetrahydrofuran and dioxane; aromatic solvents such as benzene and toluene, chlorine-containing solvents such as methylene chloride, chloroform and carbon tetrachloride; N,N-dimethylformamide; dimethylsulfoxide; and sulfolane. 
     In the methods (a) and (c), when M is hydrogen, the co-presence of a hydrogen halide binding agent is preferred in order to bind the hydrogen halide produced as a by-product. Also in the methods (d) and (e), the co-presence of a hydrogen halide binding agent is preferred in order to bind the hydrogen halide produced as a by-product. The hydrogen halide binding agent is not specially limited, and can be selected from known agents. Typical examples of the hydrogen halide binding agent preferably usable include trialkylamines such as triethylamine, trimethylamine and tripropylamine; alkyl lithium such as n-butyl lithium, sec.-butyl lithium and tert.-butyl lithium; pyridine, sodium alcoholate, potassium alcoholate, 1,8-diazabicyclo 5,4,0!-7-undecene, sodium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide, sodium hydrite and potassium hydride. 
     In the method (b), the condensation agent for removing alcohol from the reaction is not specially limited, and can be selected from known agents. Typical examples of the agent include sodium methylate, potassium methylate, sodium ethylate, potassium ethylate and potassium tert-butylate. 
     In the methods (a) and (c), examples of the alkali metal, represented by M, in the compounds of the formulae (6) and (11) include sodium, potassium and lithium. Of these metals, sodium and potassium are preferred. 
     In the methods (a), (c), (d) and (e), examples of the halogen atom, represented by Z, in the compounds of the formulae (7), (10), (12) and (13) include fluorine, chlorine, bromine and iodine. 
     In the method (b), examples of the alkyl group, represented by R, in the ester derivative of the formula (8) include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, octyl, nonyl and decyl. Methyl and ethyl are generally preferably used. 
     In the methods (a), (b), (c), (d) and (e), the reaction is carried out at a temperature in the range of -78° C. to 200° C., preferably in the range of -50° C. to 150° C., for 0.5 to 45 hours, preferably 0.5 to 24 hours. 
     The method of isolating the intended product, a cyanoketone derivative, from the reaction system and purifying it is not specially limited, and can be selected from known methods. It is generally preferred to employ a method in which the reaction mixture is added to water, the resultant mixture was subjected to extraction with an organic solvent, and after removing the solvent, the remainder is recrystallized or purified by column chromatography. 
     A study of the present inventors has showed that the novel cyanoketone derivative of the formula (1), provided by the present invention, has very high herbicidal activity. 
     According to the present invention, therefore, there is also provided a herbicide containing the cyanoketone derivative of the formula (1) as an effective or active component. 
     The form for use of the herbicide of the present invention is not specially limited, and can be selected from known forms. For example, it can be used in the form of any one of granules, a dust, an emulsifiable concentrate, a wettable powder, a flowable agent, a tablet, an aerosol and a fuming agent, which are prepared by using an inert solid carrier, a liquid carrier or an emulsification dispersant in combination. 
     Further, In the preparation of the formulation, there may be incorporated an auxiliary agent such as a wetting agent, a diluent and a surfactant. The herbicide of the present invention can be used in the form of a liquid or a solid to which the above auxiliary agent is properly incorporated. A surfactant is often effective for improvement in the dispersibility of the herbicide in water or an oil. 
     The above surfactant can be selected from known anionic surfactants, cationic surfactants and nonionic surfactants used for the preparation of general herbicides. Examples of the particularly suitable surfactants include alkylbenzenesulfonic acid, alkylnaphthalenesulfonic acid, fatty acid sulfonate, polyoxyethylene alkylphenyl ether sulfonate, sodium alkylsulfate, sodium lignin sulfonate and polyalkylnaphthalene sulfonate. 
     Typical examples of the form of the cyanoketone derivative of the formula (1) for use as a herbicide are as follows. 
     A wettable powder and granules generally contain an inert solid carrier and a surfactant in addition to the active component of the formula (1). The inert solid carrier is generally selected from natural or synthetic inorganic powders. The most preferred are, for example, clays, talc, potassium carbonate, diatomaceous earth and silica. The wettable powder and granules generally contain 1 to 80 parts by weight of the active component, 5 to 98 parts by weight of the inert solid carrier and 1 to 15 parts by weight of the surfactant. Polyvinyl alcohol and sodium carboxymethylcellulose may naturally be incorporated as required. 
     The emulsifiable concentrate is generally prepared by dissolving the active component and the surfactant in a solvent. The solvent is preferably selected from those which can dissolve the active component. Typical examples of the solvent include xylene, phenoxyethanol, cyclohexane, solvent naphtha, methylnaphthalene and kerosene. The emulsifiable concentrate generally contains 75 to 20 parts by weight of the active component, 10 to 20 parts by weight of the surfactant and 15 to 60 parts by weight of the solvent. 
     The dust is a product in which the active component is held on a natural or synthetic inorganic powder. The dust is generally prepared by mixing 0.5 to 6 parts by weight of the active component and 99.5 to 94 parts by weight of the inorganic powder. 
     The flowable agent is a suspension product prepared by suspending the active component insoluble in water, and adding a dispersant to disperse the suspended active component in water. It is the most widely employed embodiment to suspend 20 to 50% by weight of the active component. 
     The fuming agent is prepared by incorporating a heat generating agent and a heat generation adjuster. The heat generating agent is selected from nitrates, nitrites, guanidine salts and potassium chlorate. The heat generation adjuster is selected from alkali metal salts and potassium nitrates. 
     The novel cyanoketone derivative of the formula (1) has remarkably high herbicidal activity and is effective against a variety of broad-leaved weeds. Examples of the weeds against which the herbicidal activity is generally effective include upland soil weeds such as common puralane, carpetweed, tufted knotweed, goosefoot, common lamb&#39;s quarters, livid amaranth, Japanese mugwort, creeping woodsorred, field bindweed, shepherdspurse, nipplewort, catchweed bedstraw and field sorrel. 
     The cyanoketone derivative of the formula (1) is a novel compound which has high selectivity, i.e., remarkably high herbicidal activity against broad leaved weeds and safety for graminous plants. Therefore, it has characteristic features in that it is completely harmless to crops such as rice, wheat, barley, corn, etc., even when it is used in a high dosage. When the compound of the formula (1), provided by the invention, is sprayed as a herbicide to gramineous plants, not only the use of it as a soil-applied herbicide is effective, but the use of it as a foliar-applied herbicide is also effective. 
     in general, the suitable dosage as an active component of the herbicide of the present invention is in the range of 0.05 to 20.0 kg/h, preferably 0.10 to 6.0 kg/h. 
    
    
     The present invention will be explained further in detail hereinafter by reference to Examples. The present invention, however, shall not be limited to these Examples. 
     EXAMPLE 1 
     Production of 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(2-pyridyl)pentanenitrile (compound No. 100): 
     2- 5-2-Chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!propionic acid chloride (2.12 g), 0.65 g of 2-pyridineacetonitrile and 20 ml of anhydrous toluene were charged, and 0.79 g of pyridine was added dropwise to the solution. The mixed solution was stirred at room temperature for 24 hours, and then concentrated with a rotary evaporator. The concentrate was acidified with a 10% hydrochloric acid aqueous solution, and extracted with ethyl acetate, followed by concentrating the extract. 
     The residue was recrystallized from ether-ethyl acetate to obtain 1.06 g of compound No. 100. The yield was 41.9% . The results of analysis of compound No. 100 are shown in Table 1. 
     EXAMPLE 2 
     Production of 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(2,4-dichlorophenyl)-pentanenitrile (compound No. 102) 
     A solution of 0.93 g of 2,4-dichlorophenylacetonitrile in 30 ml of anhydrous tetrahydrofuran (hereinafter abbreviated as &#34;THF&#34;) was cooled to -78° C. To this solution was added 3.5 ml of a 1.6M n  BuLi-hexane solution. Then, a THF solution of 2.12 g of 2- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!propionic acid chloride was added thereto dropwise. The mixed solution was stirred for 30 minutes, then acidified with a 10% hydrochloric acid aqueous solution, and extracted with ethyl acetate. The ethyl acetate layer was dried over anhydrous magnesium sulfate, filtered and concentrated with a rotary evaporator. 
     The residue was purified by silica gel chromatography to obtain 0.75 g of compound No. 102. The yield was 26.3%. The results of analysis of compound No. 102 are shown in Table 1. 
     EXAMPLE 3 
     Production of 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(3,4-dichlorophenyl)pentanenitrile (compound No. 104) 
     Ethyl 2- 5-(2-chloro-4-trifluoromethylphenoxy-2-nitro!propionate (2.16 g) and 0.93 g of 2,3-dichlorophenylacetonitrile were added to a solution of 0.35 g of metallic sodium in 50 ml of ethanol, and the mixture was refluxed under heat for 4 hours. The reaction liquid was concentrated, and a 10% hydrochloric acid aqueous solution was added to the residue. The mixture was extracted with chloroform, and the extract was concentrated. The residue was purified by silica gel chromatography to obtain 1.86 g of compound No. 104 which was a pale yellow viscous substance. The yield was 65.0%. The results of analysis of compound No. 104 are shown in Table 1. 
     EXAMPLE 4 
     Production of 4- 5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)-2-nitrophenylthio!-3-oxo-2-(2,4-dichlorophenyl)pentanenitrile (compound No. 148) 
     2,3-Dichloro-5-trifluoromethylpyridine (1.08 g), 2.05 g of 1-cyano-1-(2,4-dichlorophenyl)-3-(5-hydroxy-2-nitrophenylthio)-2-butanone and 2.07 g of potassium carbonate were refluxed in 50 ml of acetonitrile under heat at 80° C. for 3 hours. The reaction liquid was filtered, and the filtrate was concentrated. A 10% hydrochloric acid aqueous solution was added to the residue, and the mixture was extracted with chloroform, followed by concentrating the extract. The residue was purified by silica gel chromatography to obtain 1.62 g of compound No. 148 which was a pale yellow viscous substance. The yield was 55.0%. The results of analysis of compound No. 148 are shown in Table 1. 
     EXAMPLE 5 
     Production of 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-3-oxo-2-(4-methylpiperadinylcarbonitrile)pentanenitrile (compound No. 168) 
     A solution of 2.45 g of 4- 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrophenoxy!-2-cyano-3-oxopentanoyl chloride in 20 ml of dimethoxyethane was added dropwise to a solution of 0.5 g of N-methylpiperadine, 0.87 g of triethylamine and 30 ml of dimethoxyethane. Then, the mixed solution was stirred at room temperature for 6 hours. The reaction liquid was removed, and the residue was extracted with chloroform, followed by concentrating the extract. The residue was purified by silica gel chromatography to obtain 2.11 g of compound No. 168 which was a pale yellow viscous substance. The yield was 76.2%. The results of analysis of compound No. 168 are shown in Table 1. 
     EXAMPLE 6 
     Compounds Nos. 116, 122, 196, 212, 218 and 294 were produced in the same manner as in Example 1. 
     Compounds Nos. 106, 108, 110, 112, 114, 118, 120, 124, 126, 128, 136, 138, 140, 142, 144, 146, 160, 162, 164, 166, 180, 182, 190, 198, 202, 204, 206, 208, 210, 214, 216, 220, 222, 224, 226, 232, 234, 236, 238, 240, 242, 256, 258, 260, 262, 276, 278 and 286 were produced in the same manner as in Example 2. 
     Compounds Nos. 172,174, 176,178, 200, 268, 270, 272, 274, 292. 298, 300, 302, 304, 306, 308, 316, 318, 320, 322, 328, 330, 332, 334, 336, 338 and 340 were produced in the same manner as in Example 3. 
     Compounds Nos. 130, 132, 134, 150, 152, 154, 156, 158, 194, 228, 230, 244, 246, 248, 250, 252, 254, 290, 296, 310, 312, 314, 324 and 326 were produced in the same manner as in Example 4. 
     Compounds Nos. 170, 184, 186, 188, 192, 264, 266, 280, 282, 284 and 288 were produced in the same manner as in Example 5. 
     The results of analysis of the obtained compounds are shown in Table 1. In said Table 1, infrared spectra show only characteristic absorptions ascribable to an ether linkage and a cyano group which were obtained from the measurements, and mass spectra show molecular ion peaks (M + ) and fragment peaks cleaved in positions shown in the formula (5) which were in common among all the compounds, these peaks being obtained from the measurements. 
     
         TABLE 1  - Compound             i.r (cm.sup.-1)  No. A.sub.1 B.sub.1 B.sub.2 B.sub.3 X.sub.1 X.sub.2 Y.sub.1 Y.sub.2 Y.sub.3 Y.sub.4 A.sub.2 MASS (COC, CN) .sup.1  H-NMR  100  ##STR20##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR21##  505(M.sup.+)360332 12002220 1.87(d, 3H)5.32(q, 1H)6.40(bs, 1H)6.60.about .8.55(m, 6H) 102  ##STR22##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR23##  572(M.sup.+)360332 12102220 1.55˜1.90(m, 3H)5.60˜5.20(m,    5 1H).80(d, 1H)6.40˜8.00(m, 9H) 104  ##STR24##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR25##  572(M.sup.+)360332 11802210 1.30˜1.80(m, 3H)5.20˜5.55(m,    5 1H).80(d, 1H)6.40˜8.00(m, 9H) 106  ##STR26##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR27##  572(M.sup.+)360332 11802220 1.50˜1.92(m, 3H)5.20˜5.40(m,    5 1H).82(d, 1H)6.40˜8.00(m, 9H) 108  ##STR28##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR29##  538(M.sup.+)360332 11702220 0.92˜1.85(m, 3H)5.20(q, 1H)5.80(m,    6 1H).20˜8.00(m, 10H) 110  ##STR30##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR31##  583(M.sup.+)360332 11902210 1.22˜1.88(m, 3H)4.60˜5.60(m,    5 1H).80(d, 1H)6.32˜8.00(m, 10H) 112  ##STR32##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR33##  504(M.sup.+)360332 11802210 0.90˜1.90(m, 3H)5.24˜5.60(m,    5 1H).80(bs, 1H)6.20˜8.00(m, 11H) 114  ##STR34##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR35##  518(M.sup.+)360332 11902220 0.90˜1.90(m, 3H)2.20(s, 3H)5.25˜ 5.60(m, 1H)5.78(bs, 1H)6.60˜7.90(m, 10H) 116  ##STR36##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR37##  575(M.sup.+)360332 11902220 1.50˜1.85(m, 3H)5.60˜6.20(m,    5 1H).75(bs, 1H)6.40˜8.15(m, 7H) 118  ##STR38##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR39##  534(M.sup.+)360332 11702210 1.00˜1.80(m, 3H)3.80(s, 3H)5.25˜ 5.60(bs, 1H)6.65˜7.80(m, 10H) 120  ##STR40##  H CH.sub.3 H O O NO.sub.2 H H H CH.sub.3 408(M.sup.+)326298 11902210 1.00˜1.80(m, 3H)5.80(d, 1H)5.85(bs, 1H)6.60˜8.00(m, 6H)                                                                122  ##STR41##  H CH.sub.3 H O O NO.sub.2 H H H CN 403(M.sup.+)310282 11702220 1.60.abou t.1.90(m, 3H)4.58˜5.12(m, 1H)5.41˜5.54(m, 1H)6.98˜7.80( m, 6H) 124  ##STR42##  CH CH.sub.3 H O O NO.sub.2 H H H  ##STR43##  588(M.sup.+)376348 11702220 1.58˜1.92(m, 3H)5.58˜5.20(m,    5 1H).80(d, 1H)6.20(bs, 1H)6.40˜8.04(m, 12H) 126  ##STR44##  CH CH.sub.3 H O O NO.sub.2 H H H  ##STR45##  520(M.sup.+)342314 11802210 1.00˜1.90(m, 3H)5.20˜5.55(m,    6 1H).20(bs, 1H)6.42˜8.10(m, 13H) 128  ##STR46##  CH CH.sub.3 H O O NO.sub.2 H H H  ##STR47##  502(M.sup.+)338310 11902210 1.02˜1.90(m, 3H)2.19(s, 3H)5.75(d,    6 1H).25(bs, 1H)6.30˜8.00(m, 11H) 130  ##STR48##  CH CH.sub.3 H O O NO.sub.2 H H H  ##STR49##  486(M.sup.+)334306 11802220 1.25˜2.16(m, 7H)3.30˜3.52(m,    3 2H).90˜4.40(m, 3H)5.46˜5.73(m, 1H)5.80(d, 1H) 9.05(s, 1H)6.39˜8.20(d, 6H) 132  ##STR50##  CH CH.sub.3 H O O NO.sub.2 H H H  ##STR51##  546(M.sup.+)334306 12002210 1.00˜1.90(m, 3H)5.65(d, 1H)6.20(bs, 1H)6.40˜8.20(m, 10H)9.10(s, 1H) 134  ##STR52##  CH CH.sub.3 H O O NO.sub.2 H H H  ##STR53##  546(M.sup.+)334306 12002220 1.20˜1.92(m, 3H)5.20˜5.55(m,    6 1H).40(bs, 1H)6.60˜8.10(m, 9H)9.08(s, 1H) 136  ##STR54##  H H H O O NO.sub.2 H H H  ##STR55##  558(M.sup.+)346332 12002220 4.80(d, 2H)5.20˜5.60(m, 1H)6.40˜ 7.98(m, 9H) 138  ##STR56##  CH.sub.3 H CH.sub.3 O O NO.sub.2 H H H  ##STR57##  586(M.sup.+)360332 12102210 1.25˜2.11(m, 6H)5.22˜5.62(m,    6 1H).40˜8.10(m, 9H) 140  ##STR58##  CH.sub.3 H H O O NO.sub.2 H H H  ##STR59##  531(M.sup.+)360332 11902220 1.00˜1.96(m, 3H)5.30˜5.60(m,    5 1H).83(bs, 1H)6.00˜8.00(m, 11H) 142  ##STR60##  CH.sub.3 H H O O NO.sub.2 H H H  ##STR61##  583(M.sup.+)371343 12102220 1.60˜1.90(m, 3H)5.20˜5.62(m,    6 1H).00(d, 1H)6.60˜8.20(m, 9H) 144  ##STR62##  CH.sub.3 CH.sub.3 H S O NO.sub.2 H H H CH.sub.2 CCH 462(M.sup.+)356314 12202220 1.19˜1.98(m, 6H)2.35˜2.50(m, 1H)4.20˜4.26(m, 2H)5.80˜6.10(bs, 1H)6.20(8.00(m, 7H) 146  ##STR63##  CH.sub.3 H CH.sub.3 S S NO.sub.2 H H H CN 465(M.sup.+)358330 12102210 1.20˜2.12(m, 6H)6.20(bs, 1H)6.40˜8.20(m, 7H) 148  ##STR64##  CH.sub.3 H H O S NO.sub.2 H H H  ##STR65##  589(M.sup.+)377349 11702210 1.32˜1.80(m, 3H)4.60˜5.00(m,    5 1H).30˜5.68(m, 1H)6.94˜7.80(m, 7H)7.81˜8.80(m, 2H)                                                                 150  ##STR66##  CH.sub.3 H H O O NO.sub.2 H H H  ##STR67##  519(M.sup.+)327299 11802210 2.10˜2.45(m, 3H)4.61(s, 2H)5.76(s,    6 1H).95˜7.50(m, 7H) 152  ##STR68##  H H CH.sub.3 O S NO.sub.2 H H H CH.sub.2 SCH.sub.3 421(M.sup.+)279265 11902220 1.32˜2.00(m, 3H)2.52˜2.66(m, 3H)4.31˜4.54(m, 3H)5.45˜5.61(m, 1H)6.97˜8.15(m, 6H) 154  ##STR69##  CH.sub.3 H CH.sub.3 O O NO.sub.2 H H H CF.sub.3 441(M.sup.+)291263 11802220 1.15˜1.68(m, 6H)2.51(s, 3H)5.20˜5.60(m, 1H)6.90.abou t.8.00(m, 5H) 156  ##STR70##  CH.sub.3 H CH.sub.3 O O NO.sub.2 H H H  ##STR71##  587(M.sup.+)361333 12102220 1.16˜1.70(m, 6H)5.22˜5.62(m,    6 1H).60˜8.20(m, 8H) 158  ##STR72##  CH.sub.3 CH.sub.3 CH.sub.3 O O NO.sub.2 H H H  ##STR73##  596(M.sup.+)370328 12202220 1.42(s, 3H)1.64(s, 3H)2.22(s, 3H)6.00˜ 8.00(m, 8H) 160  ##STR74##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR75##  525(M.sup.+)360332 12002210 1.74(d, 3H)1.80˜2.40(bs, 4H)3.45.about .4.00(bs, 4H)5.21(q, 1H)6.40˜8.20(m, 7H) 162  ##STR76##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR77##  539(M.sup.+)360332 12002220 1.40˜1.90(m, 9H)3.40˜4.00(bs, 1H)5.30(q, 1H)6.40˜8.10(m, 7H) 164  ##STR78##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR79##  567(M.sup.+)360332 11802220 1.40˜2.10(m, 11H)3.404.00(bs, 4H)5.25(q, 1H)6.40˜8.10(m, 7H) 166  ##STR80##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR81##  541(M.sup.+)360332 11902220 1.68(d, 3H)3.70(s, 8H)5.18(q, 1H)6.40˜ 8.00(m, 7H) 168  ##STR82##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR83##  554(M.sup.+)360332 11802220 0.90˜1.90(m, 6H)2.12˜3.10(m,    5 8H).20(q, 1H)6.42˜8.00(m, 7H) 170  ##STR84##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR85##  476(M.sup.+)360332 11902210 1.32˜1.93(m, 3H)2.50(s, 3H)4.20(s,    5 3H).80(bs, 1H)6.30˜8.00(m, 6H) 172  ##STR86##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR87##  499(M.sup.+)360332 12102210 0.95˜1.82(m, 3H)3.10(d, 6H)5.25˜ 5.62(m, 1H)6.00(bs, 1H)6.60˜8.30(m, 6H) 174  ##STR88##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR89##  561(M.sup.+)360332 12002210 1.20˜1.90(m, 3H)3.20(s, 3H)5.15(q,    6 1H).40˜7.80(m, 12H) 176  ##STR90##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR91##  575(M.sup.+)360332 11802200 0.90˜1.90(m, 6H)2.50(q, 2H)5.20˜ 5.55(m, 1H)5.90(bs, 1H)6.50˜8.10(m, 11H) 178  ##STR92##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR93##  589(M.sup.+)360332 12002220 1.00˜2.00(m, 9H)2.70(q, 1H)5.85(bs, 1H)6.50˜8.10(m, 11H) 180  ##STR94##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR95##  567(M.sup.+)360332 11802210 0.85(d, 6H)1.65(d, 3H)1.60˜2.70(m,    4 3H).20˜4.70(m, 2H)5.20(q, 1H)6.40˜7.80(m, 6H) 182  ##STR96##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR97##  631(M.sup.+)360332 11702210 1.22˜1.92(m, 3H)3.30(s, 3H)5.20(q,    6 1H).40˜7.80(m, 10H) 184  ##STR98##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR99##  525(M.sup.+)342314 12102200 1.00˜1.90(m, 6H)2.10(s, 3H)2.22˜ 2.74(m, 4H)5.20(q, 1H)6.40˜7.90(m, 9H) 186  ##STR100##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR101##  559(M.sup.+)376348 12002210 1.20˜1.90(m, 3H)2.12(s, 3H)3.48˜ 3.90(m, 4H)5.30(q, 1H)6.50˜8.00(m, 9H) 188  ##STR102##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR103##  486(M.sup.+)361333 11902220 1.00˜1.98(m, 3H)2.10(s, 3H)3.70˜ 3.85(m, 1H)5.10(q, 1H)6.40˜7.90(m, 5H) 190  ##STR104##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR105##  523(M.sup.+)344316 11702200 1.42˜1.90(m, 13H)3.40˜4.02(m, 1H)5.40(q, 1H)6.40˜8.10(m, 6H)9.10(s, 1H) 192  ##STR106##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR107##  513(M.sup.+)344316 11802210 0.90˜1.95(m, 6H)2.50(q, 2H)3.58(s, 1H)5.12(q, 1H)6.50˜8.00(m, 6H)9.08(s, 1H) 194  ##STR108##  H CH.sub.3 H O O NO.sub.2 H H H  ##STR109##  494(M.sup.+)315287 11902200 1.44˜1.90(m, 13H)3.40˜4.10(m, 1H)5.40(q, 1H)6.42˜8.00(m, 7H) 196  ##STR110##  H CH.sub.3 H O O Cl H H H  ##STR111##  494(M.sup.+)349321 12102220 1.85(d, 3H)5.22(q, 1H)6.40(bs, 1H)6.50.about .8.55(m, 6H) 198  ##STR112##  H CH.sub.3 H O O Cl H H H  ##STR113##  561(M.sup.+)349321 12002220 1.75˜1.90(m, 3H)5.60˜5.20(m,    5 1H).85(d, 1H)6.42˜8.00(m, 9H) 200  ##STR114##  H CH.sub.3 H O O Cl H H H  ##STR115##  561(M.sup.+)349321 11902210 0.80˜1.90(m, 3H)5.20˜5.55(m,    5 1H).80(d, 1H)6.40˜8.00(m, 9H) 202  ##STR116##  H CH.sub.3 H O O Cl H H H  ##STR117##  561(M.sup.+)349321 11902220 0.81˜1.90(m, 3H)5.20˜5.55(m,    5 1H).80(d, 1H)6.40˜8.05(m, 9H) 204  ##STR118##  H CH.sub.3 H O O Cl H H H  ##STR119##  527(M.sup.+)349321 11802220 0.90˜1.80(m, 3H)5.20(q, 1H)5.80(m,    6 1H).20˜7.90(m, 10H) 206  ##STR120##  H CH.sub.3 H O O Cl H H H  ##STR121##  572(M.sup.+)349321 12002210 1.20˜1.90(m, 3H)4.20˜5.60(m,    5 1H).80(d, 1H)6.30˜8.00(m, 10H) 208  ##STR122##  H CH.sub.3 H O O Cl H H H  ##STR123##  493(M.sup.+)349321 11702220 1.00˜1.90(m, 3H)5.25˜5.60(m,    5 1H).80(bs, 1H)6.00˜8.00(m, 11H) 210  ##STR124##  H CH.sub.3 H O O Cl H H H  ##STR125##  507(M.sup.+)349321 11802220 0.90˜1.80(m, 3H)2.21(s, 3H)5.25˜ 5.60(m, 1H)5.78(bs, 1H)6.65˜7.80(m, 10H) 212  ##STR126##  H CH.sub.3 H O O Cl H H H  ##STR127##  564(M.sup.+)349321 11902210 1.55˜1.90(m, 3H)5.62˜6.20(m,    5 1H).70(bs, 1H)6.40˜8.00(m, 7H) 214  ##STR128##  H CH.sub.3 H O O Cl H H H  ##STR129##  523(M.sup.+)349321 11802210 0.90˜1.80(m, 3H)3.70(s, 3H)5.20˜ 5.60(bs, 1H)6.65˜7.60(m, 10H) 216  ##STR130##  H CH.sub.3 H O O Cl H H H CH.sub.3 397(M.sup.+)315287 11902200 1.00.abou t.1.70(m, 3H)5.75(d, 1H)5.80(bs, 1H)6.50˜8.00(m, 6H) 218  ##STR131##  H CH.sub.3 H O O Cl H H H CN 392(M.sup.+)299271 11702210 1.20˜1.90 (m, 3H)4.40˜5.12(m, 1H)5.40˜5.54(m, 1H)6.88˜7.80(m, 6H) 220  ##STR132##  H CH.sub.3 H O O Cl H H H  ##STR133##  577(M.sup.+)365337 11802210 1.50˜1.92(m, 3H)5.20˜5.60(m,    5 1H).85(d, 1H)6.25(bs, 1H)6.40˜8.00(m, 12H) 222  ##STR134##  H CH.sub.3 H O O Cl H H H  ##STR135##  509(M.sup.+)331303 11702210 1.10˜1.90(m, 3H)5.30˜5.55(m,    6 1H).10(bs, 1H)6.32˜8.10(m, 13H) 224  ##STR136##  H CH.sub.3 H O O Cl H H H  ##STR137##  491(M.sup.+)327299 12002210 0.98˜1.90(m, 3H)2.10(s, 3H)5.70(d,    6 1H).25(bs, 1H)6.40˜8.00(m, 11H) 226  ##STR138##  H CH.sub.3 H O O Cl H H H  ##STR139##  475(M.sup.+)323295 11902220 1.15˜1.95(m, 7H)3.20˜3.50(m,    3 2H).80˜4.20(m, 3H)5.50˜5.85(m, 1H)6.10(d, 1H) 9.05(s, 1H)6.39˜8.20(d, 6H) 228  ##STR140##  H CH.sub.3 H O O Cl H H H  ##STR141##  535(M.sup.+)323295 11902210 0.90˜1.90(m, 3H)5.60(d, 1H)6.25(bs, 1H)6.50˜8.20(m, 10H)9.10(s, 1H) 230  ##STR142##  H CH.sub.3 H O O Cl H H H  ##STR143##  535(M.sup.+)323295 11902220 1.15˜1.90(m, 3H)5.15˜5.50(m,    6 1H).35(bs, 1H)6.70˜8.10(m, 9H)9.08(s, 1H) 232  ##STR144##  H H H O O Cl H H H  ##STR145##  547(M.sup.+)335321 11802210 4.70(d, 2H)5.10˜5.50(m, 1H)6.40˜ 7.80(m, 9H) 234  ##STR146##  CH.sub.3 H CH.sub.3 O O Cl H H H  ##STR147##  575(M.sup.+)349321 12002210 1.15˜2.11(m, 6H)5.12˜5.60(m,    6 1H).30˜8.00(m, 9H) 236  ##STR148##  CH.sub. H H O O Cl H H H  ##STR149##  520(M.sup.+)349321 11802210 0.99˜1.90(m, 3H)5.30˜5.55(m,    5 1H).90(bs, 1H)6.00˜8.00(m, 11H) 238  ##STR150##  CH.sub.3 H H O O Cl H H H  ##STR151##  572(M.sup.+)360332 12002210 1.55˜1.85(m, 3H)5.10˜5.60(m,    5 1H).90(d, 1H)6.30˜8.00(m, 9H) 240  ##STR152##  CH.sub.3 CH.sub.3 H S O Cl H H H CH.sub.2 CCH 451(M.sup.+)345303 12002220 1.09˜1.88(m, 6H)2.20˜2.50(m, 1H)4.10˜4.25(m, 2H)5.80˜6.10(bs, 1H)6.10˜7.90(m, 7H) 242  ##STR153##  CH.sub.3 H CH.sub.3 S S Cl H H H CN 454(M.sup.+)347319 11902210 0.90˜1.90(m, 6H)6.10(bs, 1H)6.40˜8.10(m, 7H) 244  ##STR154##  CH.sub.3 H H O S Cl H H H  ##STR155##  578(M.sup.+)366338 11602200 1.10˜1.80(m, 3H)4.50˜5.00(m,    5 1H).20˜5.40(m, 1H)6.90˜7.80(m, 7H)7.80˜8.80(m, 2H)                                                                 246  ##STR156##  CH.sub.3 H H O O Cl H H H  ##STR157##  518(M.sup.+)316288 11702210 1.90˜2.45(m, 3H)4.60(s, 2H)5.60(s,    6 1H).90˜7.50(m, 7H) 248  ##STR158##  H H CH.sub.3 O S Cl H H H CH.sub.2 SCH.sub.3 410(M.sup.+)268254 11902200 1.10˜2.00(m, 3H)2.50˜2.70(m, 3H)4.30˜4.42(m, 3H)5.45˜5.65(m, 1H)7.00˜8.15(m, 6H) 250  ##STR159##  CH.sub.3 H CH.sub.3 O O Cl H H H CF.sub.3 430(M.sup.+)280252 11802210 1.00˜1.60(m, 6H)2.55(s, 3H)5.20˜5.60(m, 1H)6.90˜7.90(m,  5H) 252  ##STR160##  CH.sub.3 H CH.sub.3 O O Cl H H H  ##STR161##  576(M.sup.+)350322 12002200 1.00˜1.70(m, 6H)5.10˜5.65(m,    6 1H).60˜8.10(m, 8H) 254  ##STR162##  CH.sub.3 CH.sub.3 CH.sub.3 O O Cl H H H  ##STR163##  585(M.sup.+)359317 11902200 1.35(s, 3H)1.61(s, 3H)2.18(s, 3H)6.00˜ 7.95(m, 8H) 256  ##STR164##  H CH.sub.3 H O O Cl H H H  ##STR165##  514(M.sup.+)349321 11902200 1.70(d, 3H)1.80˜2.30(bs, 4H)3.40.about .4.00(bs, 4H)5.25(q, 1H)6.40˜7.80(m, 7H) 258  ##STR166##  H CH.sub.3 H O O Cl H H H  ##STR167##  528(M.sup.+)349321 11902210 1.20˜2.20(m, 9H)3.40˜4.00(bs, 2H)5.25(q, 1H)6.40˜7.80(m, 6H) 260  ##STR168##  H CH.sub.3 H O O Cl H H H  ##STR169##  556(M.sup.+)349321 11802200 1.40˜2.00(m, 11H)3.40˜4.00(bs, 4H)5.25(q, 1H)6.35˜7.80(m, 7H) 262  ##STR170##  H CH.sub.3 H O O Cl H H H  ##STR171##  530(M.sup.+)349321 11702210 1.69(d, 3H)3.75(s, 8H)5.23(q, 1H)6.40˜ 8.00(m, 7H) 264  ##STR172##  H CH.sub.3 H O O Cl H H H  ##STR173##  543(M.sup.+)349321 11702200 0.85˜1.85(m, 6H)2.00˜2.90(m,    5 8H).20(q, 1H)6.30˜7.90(m, 7H) 266  ##STR174##  H CH.sub.3 H O O Cl H H H  ##STR175##  465(M.sup.+)349321 11802200 1.25˜1.80(m, 3H)2.40(s, 3H)4.10(s,    5 3H).80(bs, 1H)6.30˜7.80(m, 6H) 268  ##STR176##  H CH.sub.3 H O O Cl H H H  ##STR177##  488(M.sup.+)349321 11902210 0.90˜1.80(m, 3H)3.12(d, 6H)5.26˜ 5.65(m, 1H)6.00(bs, 1H)6.60˜8.20(m, 6H) 270  ##STR178##  H CH.sub.3 H O O Cl H H H  ##STR179##  550(M.sup.+)349321 11802200 1.60(d, 3H)3.30(s, 3H)5.10(q, 1H)6.40˜ 7.80(m, 12H) 272  ##STR180##  H CH.sub.3 H O O Cl H H H  ##STR181##  564(M.sup.+)349321 11902190 0.90˜1.90(m, 6H)2.52(q, 2H)5.20˜ 5.50(m, 1H)5.90(bs, 1H)6.50˜8.00(m, 11H) 274  ##STR182##  H CH.sub.3 H O O Cl H H H  ##STR183##  578(M.sup.+)349321 11902210 0.98˜1.95(m, 9H)2.60(q, 1H)5.80(bs, 1H)6.50˜8.00(m, 11H) 276  ##STR184##  H CH.sub.3 H O O Cl H H H  ##STR185##  556(M.sup.+)349321 11702210 0.90(d, 6H)1.68(d, 3H)1.62˜2.70(m,    4 3H).20˜4.60(m, 2H)5.16(q, 1H)6.40˜7.85(m, 6H) 278  ##STR186##  H CH.sub.3 H O O Cl H H H  ##STR187##  620(M.sup.+)349321 11802200 1.10˜1.80(m, 3H)3.15(s, 3H)5.15(q,    6 1H).40˜7.85(m, 10H) 280  ##STR188##  H CH.sub.3 H O O Cl H H H  ##STR189##  514(M.sup.+)312303 12002210 0.95˜1.86(m, 6H)2.12(s, 3H)2.25˜ 2.84(m, 4H)5.21(q, 1H)6.20˜7.90(m, 9H) 282  ##STR190##  H CH.sub.3 H O O Cl H H H  ##STR191##  548(M.sup.+)365337 11902210 1.10˜1.90(m, 3H)2.16(s, 3H)3.53˜ 3.98(m, 4H)5.24(q, 1H)6.40˜8.00(m, 9H) 284  ##STR192##  H CH.sub.3 H O O Cl H H H  ##STR193##  475(M.sup.+)350322 12002220 0.98˜1.98(m, 3H)2.08(s, 3H)3.64˜ 3.85(m, 1H)5.07(q, 1H)6.30˜7.90(m, 5H) 286  ##STR194##  H CH.sub.3 H O O Cl H H H  ##STR195##  512(M.sup.+)333305 11802200 1.32˜1.90(m, 13H)3.30˜4.05(m, 1H)5.35(q, 1H)6.39˜8.10(m, 6H)9.12(s, 1H) 288  ##STR196##  H CH.sub.3 H O O Cl H H H  ##STR197##  502(M.sup.+)333305 11802200 0.90˜1.85(m, 6H)2.45(q, 2H)3.45(s, 1H)5.06(q, 1H)6.40˜7.86(m, 6H)9.05(s, 1H) 290  ##STR198##  H CH.sub.3 H O O Cl H H H  ##STR199##  483(M.sup.+)304276 11702200 1.32˜1.85(m, 13H)3.30˜4.10(m, 1H)5.30(q, 1H)6.34˜7.88(m, 7H) 292  ##STR200##  H CH.sub.3 H O O Cl H Cl H  ##STR201##  595(M.sup.+)383355 12102200 1.80˜1.95(m, 3H)5.25˜5.62(m,    5 1H).90(bs, 1H)6.60˜8.20(m, 8H) 294  ##STR202##  H CH.sub.3 H O O Cl H Cl H  ##STR203##  597(M.sup.+)383355 12002210 1.78˜2.00(m, 3H)5.20(q, 1H)6.42(bs, 1H)6.60˜8.80(m, 7H) 296  ##STR204##  H CH.sub.3 H O O Cl H Cl H  ##STR205##  562(M.sup.+)383355 11902220 1.22˜2.10(m, 9H)3.40˜4.10(m,    5 4H).30(m, 1H)6.45˜8.00(m, 8H) 298  ##STR206##  H CH.sub.3 H O O Cl H F H  ##STR207##  579(M.sup.+)367339 11702200 1.78˜1.92(m, 3H))5.30˜5.65(m, 1H)5.92(bs, 1H)6.58˜8.40(m, 8H) 300  ##STR208##  H CH.sub.3 H O O F H Cl H  ##STR209##  579(M.sup.+)367339 11802210 1.79˜1.93(m, 3H)5.31˜5.60(m,    5 1H).88(bs, 1H)6.55˜8.30(m, 8H) 302  ##STR210##  H CH.sub.3 H O O NO.sub.2 H Cl H  ##STR211##  606(M.sup.+)394366 11902200 1.90˜2.12(m, 3H))5.22˜5.64(m, 1H)5.85(bs, 1H)6.45˜8.00(m, 8H) 304  ##STR212##  H CH.sub.3 H O O Cl H F N  ##STR213##  512(M.sup.+)333305 12002200 1.10˜2.10(m, 9H)3.40˜4.05(m,    5 4H).33(m, 1H)6.50˜8.00(m, 6H) 306  ##STR214##  H CH.sub.3 H O O Cl H Cl N  ##STR215##  512(M.sup.+)333305 12102210 1.08˜2.12(m, 3H)3.35˜4.10(m,    5 4H).20(m, 1H)6.50˜8.10(m, 6H) 308  ##STR216##  H CH.sub.3 H O O Cl H Cl N  ##STR217##  512(M.sup.+)333305 11802210 1.15˜2.20(m, 3H)3.45˜4.20(m,    5 4H).25(m, 1H)6.48˜8.13(m, 6H) 310  ##STR218##  H CH.sub.3 H O O Cl H Cl N  ##STR219##  509(M.sup.+)384356 11702190 1.10˜1.80(m, 3H)1.80˜2.30(bS, 4H)3.42˜4.20(bs, 4H)5.30(q, 1H)6.60˜8.00(m, 5H) 312  ##STR220##  H CH.sub.3 H O O Cl H F N  ##STR221##  596(M.sup.+)368340 12002200 1.20˜1.90(m, 3H)4.60˜5.10(m,    5 1H).22˜5.42(m, 1H)7.00˜8.80(m, 7H) 314  ##STR222##  H CH.sub.3 H O O Cl H F Cl  ##STR223##  596(M.sup.+)368340 12102200 1.18˜1.88(m, 3H)4.65˜5.10(m,    5 1H).30˜5.45(m, 1H)7.05˜8.76(m, 7H) 316  ##STR224##  H CH.sub.3 H O O Cl H F H  ##STR225##  595(M.sup.+)383355 12002210 1.45˜1.90(m, 3H)5.15˜5.60(m,    5 1H).90(d, 1H)6.30(bs, 1H)6.30˜8.10(m, 11H) 318  ##STR226##  H CH.sub.3 H O O Cl H F H  ##STR227##  562(M.sup.+)383355 11902210 1.20˜2.10(m, 13H)3.30˜4.10(m, 1H)5.45(q, 1H)6.39˜8.10(m, 8H) 320  ##STR228##  H CH.sub.3 H O O Cl H F H  ##STR229##  527(M.sup.+)349321 12002210 1.25˜2.00(m, 13H)3.35˜4.05(m, 1H)5.38(q, 1H)6.20˜8.10(m, 8H) 322  ##STR230##  H CH.sub.3 H O O F H Cl H  ##STR231##  501(M.sup.+)349321 11702210 1.20˜2.00(m, 13H)3.35˜4.05(m, 1H)5.38(q, 1H)6.20˜8.10(m, 8H) 324  ##STR232##  H CH.sub.3 H O O Cl H F H  ##STR233##  520(M.sup.+)341313 11902200 1.28˜1.98(m, 13H)3.27˜4.05(m, 1H)5.37(q, 1H)6.41˜8.10(m, 5H)9.12(s, 1H) 326  ##STR234##  H CH.sub.3 H O O F H Cl H  ##STR235##  520(M.sup.+)341313 11802190 1.26˜1.90(m, 13H)3.30˜4.10(m, 1H)5.40(q, 1H)6.28˜8.05(m, 6H)9.10(s, 1H) 328  ##STR236##  H CH.sub.3 H O O H H H H  ##STR237##  459(M.sup.+)315 11702212 1.80˜1.20(m, 3H)4.50˜5.10(m, 1H)5.10˜5.71(m, 1H)6.30˜7.90(m, 12H) 330  ##STR238##  H CH.sub.3 H O O H H H H  ##STR239##  527(M.sup.+)315 11702212 1.80˜1.21(m, 3H)5.70˜4.60(m, 2H)6.40˜8.00(m, 10H) 332  ##STR240##  H CH.sub.3 H O O H H H H  ##STR241##  539(M.sup.+)315 11702212 1.20˜1.80(m, 3H)5.70˜4.50(m, 2H)6.40˜8.0(m, 11H) 334  ##STR242##  H CH.sub.3 H O O H H H H  ##STR243##  527(M.sup.+)315 11702212 1.20˜1.80(m, 3H)4.50˜5.20(m, 1H)5.20˜5.70(m, 1H)6.40˜8.20(m, 11H) 336  ##STR244##  H CH.sub.3 H O O H H H H  ##STR245##  489(M.sup.+)315 11722212 1.20˜1.80(m, 3H)3.81(s, 3H)4.60˜5.6 0(m, 2H)6.30˜7.90(m, 11H) 338  ##STR246##  H CH.sub.3 H O O H H H H  ##STR247##  475(M.sup.+)315 11722212 1.20˜1.80(m, 3H)3.66(s, 1H)4.50˜5.7 0(m, 2H)6.30˜7.91(m, 11H) 340  ##STR248##  H CH.sub.3 H O O H H H H  ##STR249##  493(M.sup.+)315 12322210 1.20˜1.80(m, 3H)4.50˜5.70(m, 2H)6.40˜8.00(m, 11H) 
    
     EXAMPLE 7 
     (Herbicide Preparation Example 1) 
     Ten (10) parts by weight of the above-mentioned cyanoketone derivative, 2 parts by weight of polyoxyethylene phenyl ether, 40 parts by weight of finely powdered clay and 48 parts by weight of were pulverized and mixed to prepare a 10% wettable powder. 
     EXAMPLE 8 
     (Herbicide Preparation Example 2) 
     Twenty (20) parts by weight of the above-mentioned cyanoketone derivative, 70 parts by weight of xylene and 10 parts by weight of a surfactant were mixed and dissolved to prepare a 20% emulsifiable concentrate. 
     EXAMPLE 9 
     (Herbicide Preparation Example 3) 
     Five (5) parts by weight of the above-mentioned cyanoketone derivative, 90 parts by weight of bentonite (made by Kunimine Kogyo K.K.), and 5 parts by weight of a surfactant were mixed and pulverized to form a paste. The paste was extruded through holes having a diameter of 0.7 mm, dried, and then cut to a length of 1 to 2 mm to prepare 5% granules. 
     EXAMPLE 10 
     (Herbicidal effect by foliar application) 
     Upland farm soil (clay loam) was filled in 1/5,000-are Wagner pots, and seeds of barnyard grass, green foxtail, velvet leaf, livid amaranth and hairy beggarticks were sown 0.5 to 1 cm deep. When these weeds grew to two- or three-leaf stage, 10 ml of a wetting agent was added to each of aqueous solutions prepared by diluting 4 g of each of the wettable powders of the compounds produced according to Example 7 with 1 liter of water, and a predetermined amount of the mixture was sprayed to the foliage such that the active component was rendered in two concentrations shown in Table 2. After the treatment, the weeds were caused to grow in a greenhouse at an average temperature of 25° C. for 2 weeks, and then the herbicidal effects of test compounds were examined. 
     Other than the compounds of the present invention, the comparative compound of the following formula (15) was also used as a test compound. ##STR250## 
     The results of the examination are shown in Table 2. 
     The herbicidal effects were evaluated on the basis of the following six rating, 0 to 5. 
     
         ______________________________________0           control of weeds                        0-9%1           control of weeds                       10-29%2           control of weeds                       30-49%3           control of weeds                       50-69%4           control of weeds                       70-89%5           control of weeds                       90-100%______________________________________ 
    
     
                       TABLE 2-(1)______________________________________Com-   Active    Barn-                     Hairypound  component yard-  Green Velvet-                               Livid  begger-No.    g/10a     grass  foxtail                         leaf  amaranth                                      ticks______________________________________100    500       5      5     5     5      5  250       4      5     5     5      5102    500       5      5     5     5      5  250       4      5     5     5      5104    500       5      5     5     5      5  250       4      5     5     5      5106    500       5      5     5     5      5  250       4      4     5     5      5108    500       5      5     5     5      5  250       4      5     5     5      5110    500       5      5     5     5      5  250       4      5     5     5      5112    500       5      5     5     5      5  250       4      5     4     5      5114    500       5      5     5     5      5  250       4      5     4     5      5116    500       5      5     5     5      5  250       4      5     4     5      4118    500       5      5     5     5      5  250       4      5     4     5      4120    500       4      5     5     5      5  250       4      5     5     5      5122    500       5      5     5     5      5  250       4      5     5     5      5124    500       5      5     5     5      5  250       4      4     4     4      4126    500       5      5     5     5      5  250       4      4     5     5      4128    500       5      5     5     5      5  250       4      5     5     5      5130    500       5      5     5     5      5  250       4      4     4     5      4132    500       5      5     5     5      5  250       4      3     4     5      4134    500       5      5     5     5      5  250       4      4     5     5      5136    500       4      4     4     4      4  250       3      3     3     4      3138    500       4      4     4     4      4  250       3      3     3     4      3140    500       5      5     5     5      5  250       4      5     5     5      5142    500       4      5     5     5      5  250       4      4     4     5      5144    500       5      5     5     5      5  250       4      4     4     5      4146    500       5      5     5     5      5  250       4      5     5     5      5148    500       5      5     5     5      5  250       4      4     4     5      4150    500       5      5     5     5      5  250       4      4     4     5      5152    500       5      5     5     5      5  250       4      5     5     5      5154    500       5      5     5     5      5  250       4      4     4     5      5156    500       5      5     5     5      5  250       4      5     5     5      5158    500       5      5     5     5      5  250       4      5     5     5      5160    500       5      5     5     5      5  250       4      5     5     5      5162    500       5      5     5     5      5  250       4      4     5     5      5164    500       5      5     5     5      5  250       4      4     5     5      5166    500       5      5     5     5      5  250       4      4     5     5      5168    500       5      5     5     5      5  250       4      3     5     5      5170    500       5      5     5     5      5  250       4      4     4     5      4172    500       5      5     5     5      5  250       4      4     4     5      4174    500       5      5     5     5      5  250       4      4     5     5      4176    500       5      5     5     5      5  250       3      4     5     5      4178    500       5      5     5     5      5  250       3      4     5     5      4180    500       5      5     5     5      5  250       4      4     5     5      4182    500       5      5     5     5      5  250       4      5     5     5      5184    500       5      5     5     5      5  250       4      3     4     5      5186    500       5      5     5     5      5  250       4      5     5     5      5188    500       5      5     5     5      5  250       3      4     4     5      5190    500       5      5     5     5      5  250       4      4     5     5      5192    500       5      5     5     5      5  250       4      5     5     5      5194    500       5      5     5     5      5  250       4      4     4     5      5196    500       5      5     5     5      5  250       4      4     5     5      5198    500       5      5     5     5      5  250       4      4     5     5      5200    500       5      5     5     5      5  250       4      4     5     5      5202    500       5      5     5     5      5  250       3      4     5     5      5204    500       5      5     5     5      5  250       4      4     5     5      5206    500       5      5     5     5      5  250       3      4     5     5      5208    500       5      5     5     5      5  250       3      4     5     5      5210    500       5      5     5     5      5  250       4      4     4     5      5212    500       5      5     5     5      5  250       4      4     4     5      4214    500       5      5     5     5      5  250       4      5     4     5      4216    500       5      5     5     5      5  250       3      3     4     5      3218    500       5      5     5     5      5  250       4      5     5     5      5220    500       5      5     5     5      5  250       3      3     4     5      3222    500       5      5     5     5      5  250       4      4     5     5      4224    500       5      5     5     5      5  250       4      5     5     5      5226    500       5      5     5     5      5  250       4      4     5     5      5228    500       5      5     5     5      5  250       4      5     5     5      5230    500       5      5     5     5      5  250       4      4     5     5      5232    500       5      5     5     5      5  250       4      5     5     5      5234    500       5      5     5     5      5  250       3      4     4     5      4236    500       5      5     5     5      5  250       4      4     5     5      4238    500       5      5     5     5      5  250       4      5     5     5      5240    500       5      5     5     5      5  250       4      5     5     5      5242    500       5      5     5     5      5  250       4      5     5     5      5244    500       5      5     5     5      5  250       4      4     4     5      4246    500       5      5     5     5      5  250       4      4     4     5      4248    500       5      5     5     5      5  250       4      5     5     5      5250    500       5      5     5     5      5  250       4      5     5     5      5252    500       5      5     5     5      5  250       3      4     4     5      4254    500       5      5     5     5      5  250       4      5     5     5      5256    500       5      5     5     5      5  250       4      4     5     5      5258    500       5      5     5     5      5  250       4      4     5     5      5260    500       5      5     5     5      5  250       4      4     5     5      5262    500       5      5     5     5      5  250       4      4     5     5      5264    500       5      5     5     5      5  250       4      4     4     5      4266    500       5      5     5     5      5  250       3      4     3     5      3268    500       5      5     5     5      5  250       4      3     4     5      5270    500       5      5     5     5      5  250       4      3     5     5      5272    500       5      5     5     5      5  250       4      3     4     5      5274    500       5      5     5     5      5  250       4      3     4     5      5276    500       5      5     5     5      5  250       4      3     4     5      5278    500       5      5     5     5      5  250       3      4     4     5      5280    500       5      5     5     5      5  250       4      3     4     5      5282    500       5      5     5     5      5  250       4      5     5     5      5284    500       5      5     5     5      5  250       3      4     4     5      5286    500       5      5     5     5      5  250       3      3     4     5      5288    500       5      5     5     5      5  250       4      5     5     5      5290    500       5      5     5     5      5  250       3      4     4     5      5292    500       5      5     5     5      5  250       3      3     4     5      4294    500       5      5     5     5      5  250       4      5     5     5      5296    500       5      5     5     5      5  250       3      3     4     5      4298    500       5      5     5     5      5  250       3      3     4     5      4300    500       5      5     5     5      5  250       3      3     4     5      4302    500       5      5     5     5      5  250       4      4     5     5      5304    500       5      5     5     5      5  250       4      4     4     5      4306    500       5      5     5     5      5  250       4      4     4     5      5308    500       5      5     5     5      5  250       4      5     5     5      5310    500       5      5     5     5      5  250       3      4     4     5      5312    500       5      5     5     5      5  250       3      4     4     5      3314    500       5      5     5     5      5  250       4      5     5     5      5316    500       5      5     5     5      5  250       4      5     5     5      5318    500       5      5     5     5      5  250       3      4     5     5      4320    500       5      5     5     5      5  250       4      5     5     5      5322    500       5      5     5     5      5  250       4      5     5     5      5324    500       5      5     5     5      5  250       4      5     5     5      5326    500       5      5     5     5      5  250       3      4     4     5      5328    500       2      3     3     3      2  250       2      2     2     3      2330    500       3      3     3     3      3  250       2      2     2     3      3332    500       3      3     3     3      3  250       2      2     2     3      3334    500       2      3     3     3      2  250       2      2     2     3      2336    500       2      3     3     3      3  250       2      2     2     2      2338    500       2      3     2     3      2  250       2      2     2     2      2340    500       3      3     2     3      3  250       2      2     2     3      3Comp.  500       3      3     3     3      2Example  250       2      2     2     2      1______________________________________ 
    
     EXAMPLE 11 
     (Test for phytotoxicity on crops by foliar application) 
     Upland farm soil (clay loam) was filled in 1/5,000 are Wagner pots, and seeds of corn, wheat, soybean, beet and sunflower were sown 1.5 to 2 cm deep. When the soybean grew to a primary leaf development stage, 10 ml of a wetting agent was added to each of aqueous solutions prepared by diluting 4 g of each of the wettable powders of the compounds produced according to Example 7 with 1 liter of water, and a predetermined amount of the mixture was sprayed to the foliage such that the active compound was rendered in two concentrations shown in Table 3. After the treatment, the crops were allowed to grow in a greenhouse at an average temperature of 25° C. for 2 weeks, and the phytotoxicity of each of the test compounds on the crops was then examined. The results of the examination are shown In Table 3. 
     The herbicide injury was evaluated as follows. The ratios of the height and the total weight (air-dried weight) of an applied lot to those of an unapplied lot were calculated. The lowest ratios of these factors were taken as 5, and the phytotoxicity was evaluated on the basis of the following six ratings 0 to 5. 
     
         ______________________________________0              ratio to unapplied lot 100%1              ratio to unapplied lot 90-99%2              ratio to unapplied lot 80-89%3              ratio to unapplied lot 60-79%4              ratio to unapplied lot 40-59%5              ratio to unapplied lot 0-39%______________________________________ 
    
     
                       TABLE 3-(1)______________________________________Com-   Activepound  component                           Sun-No.    g/10a     Corn    Wheat Soybean                                 Beet flower______________________________________100    500       1       1     2      3    2  250       0       0     0      0    0102    500       1       1     2      3    2  250       0       0     0      0    0104    500       1       2     1      2    1  250       0       0     0      0    0106    500       0       0     0      1    0  250       0       0     0      0    0108    500       1       1     2      3    2  250       0       0     0      0    0110    500       1       1     2      3    2  250       0       0     0      0    0112    500       0       0     2      2    1  250       0       0     0      0    0114    500       1       0     2      2    1  250       0       0     0      0    0116    500       0       1     0      1    1  250       0       0     0      0    0118    500       0       1     0      1    1  250       0       0     0      0    0120    500       0       0     0      1    0  250       0       0     0      0    0122    500       0       0     0      1    1  250       0       0     0      0    0124    500       0       1     1      2    1  250       0       0     0      0    0126    500       0       1     1      1    0  250       0       0     0      0    0128    500       0       1     1      1    0  250       0       0     0      0    0130    500       0       0     1      1    0  250       0       0     0      0    0132    500       0       0     1      1    1  250       0       0     0      0    0134    500       0       1     2      2    2  250       0       0     0      0    0136    500       0       1     0      1    1  250       0       0     0      0    0138    500       0       0     1      1    0  250       0       0     0      0    0140    500       1       1     2      3    2  250       0       0     0      0    0142    500       1       0     1      1    1  250       0       0     0      0    0144    500       1       1     2      2    2  250       0       0     0      0    0146    500       1       1     2      3    2  250       0       0     0      0    0148    500       1       1     2      3    2  250       0       0     0      0    0150    500       1       1     2      3    2  250       0       0     0      0    0152    500       0       0     1      1    1  250       0       0     0      0    0154    500       0       0     0      1    0  250       0       0     0      0    0156    500       1       1     2      3    1  250       0       0     0      0    0158    500       0       1     2      2    2  250       0       0     0      0    0160    500       1       1     2      3    2  250       0       0     0      0    0162    500       1       1     2      3    2  250       0       0     0      0    0164    500       1       2     2      2    2  250       0       0     0      0    0166    500       1       2     2      2    2  250       0       0     0      0    0168    500       2       1     1      2    2  250       0       0     0      0    0170    500       1       1     1      1    0  250       0       0     0      0    0172    500       1       1     1      1    1  250       0       0     0      0    0174    500       1       2     2      2    2  250       0       0     0      0    0176    500       1       1     2      2    0  250       0       0     0      0    0178    500       1       1     2      2    2  250       0       0     0      0    0180    500       1       1     2      3    2  250       0       0     0      0    0182    500       1       1     2      2    1  250       0       0     0      0    0184    500       0       0     1      2    1  250       0       0     0      0    0186    500       1       0     0      2    1  250       0       0     0      0    0188    500       0       0     2      2    2  250       0       0     0      0    0190    500       1       1     2      3    2  250       0       0     0      0    0192    500       1       1     2      3    2  250       0       0     0      0    0194    500       0       0     1      2    1  250       0       0     0      0    0196    500       1       1     2      3    2  250       0       0     0      0    0198    500       1       1     2      2    2  250       0       0     0      0    0200    500       2       2     2      2    2  250       0       0     0      0    0202    500       1       1     2      3    2  250       0       0     0      0    0204    500       2       1     2      3    2  250       0       0     0      0    0206    500       2       1     2      3    2  250       0       0     0      0    0208    500       2       1     2      3    2  250       0       0     0      0    0210    500       2       1     2      3    2  250       0       0     0      0    0212    500       1       1     2      3    2  250       0       0     0      0    0214    500       1       1     2      3    2  250       0       0     0      0    0216    500       0       0     1      2    1  250       0       0     0      0    0218    500       0       0     1      2    2  250       0       0     0      0    0220    500       0       0     1      1    1  250       0       0     0      0    0222    500       0       0     1      1    1  250       0       0     0      0    0224    500       0       0     1      1    2  250       0       0     0      0    0226    500       0       0     1      1    1  250       0       0     0      0    0228    500       0       1     1      2    1  250       0       0     0      0    0230    500       0       0     0      2    1  250       0       0     0      0    0232    500       0       1     1      2    1  250       0       0     0      0    0234    500       0       0     1      2    1  250       0       0     0      0    0236    500       2       1     2      3    2  250       0       0     0      0    0238    500       2       1     2      3    2  250       0       0     0      0    0240    500       1       1     2      3    2  250       0       0     0      0    0242    500       2       2     2      3    2  250       0       0     0      0    0244    500       2       1     2      3    2  250       0       0     0      0    0246    500       2       1     2      3    2  250       0       0     0      0    0248    500       2       1     1      3    2  250       0       0     0      0    0250    500       2       1     2      1    2  250       0       0     0      0    0252    500       2       1     2      2    2  250       0       0     0      0    0254    500       0       1     0      1    2  250       0       0     0      0    0256    500       2       1     2      3    2  250       0       0     0      0    0258    500       2       1     2      3    2  250       0       0     0      0    0260    500       2       1     2      3    1  250       0       0     0      0    0262    500       2       1     2      3    1  250       0       0     0      0    0264    500       2       1     2      3    2  250       0       0     0      0    0266    500       2       1     2      3    2  250       0       0     0      0    0268    500       2       1     2      2    1  250       0       0     0      0    0270    500       2       1     2      3    2  250       0       0     0      0    0272    500       2       1     2      2    2  250       0       0     0      0    0274    500       2       1     2      3    2  250       0       0     0      0    0276    500       2       1     2      3    2  250       0       0     0      0    0278    500       2       1     2      3    2  250       0       0     0      0    0280    500       1       1     2      2    1  250       0       0     0      0    0282    500       1       1     1      1    1  250       0       0     0      0    0284    500       1       1     1      1    1  250       0       0     0      0    0286    500       2       1     2      3    2  250       0       0     0      0    0288    500       2       1     1      1    1  250       0       0     0      0    0290    500       0       0     2      2    1  250       0       0     0      0    0292    500       0       0     2      2    1  250       0       0     0      0    0294    500       0       0     2      2    1  250       0       0     0      0    0296    500       0       0     1      2    1  250       0       0     0      0    0298    500       0       0     1      2    0  250       0       0     0      0    0300    500       1       0     1      1    1  250       0       0     0      0    0302    500       1       1     2      3    2  250       0       0     0      0    0304    500       1       0     1      2    0  250       0       0     0      0    0306    500       1       0     1      1    1  250       0       0     0      0    0308    500       0       0     1      2    0  250       0       0     0      0    0310    500       0       0     1      2    1  250       0       0     0      0    0312    500       0       0     1      1    1  250       0       0     0      0    0314    500       0       0     1      1    1  250       0       0     0      0    0316    500       5       5     5      5    5  250       0       0     0      0    0318    500       1       1     2      3    1  250       0       0     0      0    0320    500       1       1     2      3    1  250       0       0     0      0    0322    500       1       1     2      3    1  250       0       0     0      0    0324    500       1       2     1      2    1  250       0       0     0      0    0326    500       1       1     2      3    1  250       0       0     0      0    0328    500       0       0     0      1    0  250       0       0     0      0    0330    500       0       1     1      1    0  250       0       0     0      0    0332    500       0       1     0      1    1  250       0       0     0      0    0334    500       0       0     0      1    0  250       0       0     0      0    0336    500       0       0     0      1    0  250       0       0     0      0    0338    500       0       0     0      0    0  250       0       0     0      0    0340    500       0       1     0      1    1  250       0       0     0      0    0______________________________________ 
    
     EXAMPLE 12 
     (Herbicidal effect by upland soil application) 
     Upland farm soil (clay loam) was filled in 1/5,000-are Wagner pots, and seeds of barnyard grass, green foxtail, velvet leaf, livid amaranth and hairy beggarticks were sown 0.5 to 1 cm deep. Then, a predetermined amount of each of aqueous solutions prepared by diluting 4 g of each of the wettable powders of the compounds produced according to Example 7 with 1 liter of water was sprayed to the foliage such that the active component was rendered in a concentration shown in Table 4. After the treatment, the weeds were caused to grow in a greenhouse at an average temperature of 25° C. for 4 weeks, and then the herbicidal effects of test compounds were examined. 
     The results of the examination are shown in Table 4. 
     The herbicidal effects were evaluated on the same basis as above. 
     
                       TABLE 4______________________________________Com-  Active    Barn-                     Hairypound component yard-  Green Velvet-                              Livid  begger-No.   g/10a     grass  foxtail                        leaf  amaranth                                     ticks______________________________________100   1000      5      5     5     5      5102   1000      5      5     5     5      5104   1000      5      5     5     5      5106   1000      4      5     5     5      5108   1000      5      5     5     5      5110   1000      5      5     5     5      5112   1000      4      5     5     5      4114   1000      5      5     5     5      5116   1000      4      5     4     5      5118   1000      4      5     4     5      5120   1000      4      4     4     5      4122   1000      4      4     4     5      4124   1000      4      4     5     5      4126   1000      4      4     5     5      4128   1000      4      4     4     4      4130   1000      4      5     4     5      5132   1000      4      5     4     5      5134   1000      4      5     5     5      4136   1000      4      4     4     4      4138   1000      4      4     4     5      4140   1000      5      5     5     5      5142   1000      4      5     4     5      5144   1000      4      5     5     5      5146   1000      4      4     4     4      4148   1000      5      5     5     5      5150   1000      5      5     5     5      5152   1000      4      4     4     4      4154   1000      4      4     5     5      5156   1000      5      5     5     5      5158   1000      4      4     4     4      4160   1000      5      5     5     5      5162   1000      5      5     5     5      5164   1000      5      5     5     5      5166   1000      5      5     5     5      5168   1000      5      5     5     5      5170   1000      5      5     4     5      5172   1000      5      5     4     5      5174   1000      4      5     5     5      5176   1000      4      5     5     5      5178   1000      4      5     5     5      5180   1000      5      5     5     5      5182   1000      4      4     4     4      4184   1000      4      4     5     5      5186   1000      4      4     5     5      5188   1000      5      5     5     5      5190   1000      5      5     5     5      5192   1000      4      4     4     4      4194   1000      4      4     4     5      5196   1000      5      5     5     5      5198   1000      5      5     5     5      5200   1000      5      5     5     5      5202   1000      5      5     5     5      5204   1000      5      5     5     5      5206   1000      5      5     5     5      5208   1000      5      5     5     5      5210   1000      5      5     5     5      5212   1000      4      5     4     5      5214   1000      4      5     4     5      5216   1000      4      4     4     5      4218   1000      4      4     4     4      4220   1000      4      4     5     5      4222   1000      4      4     5     5      4224   1000      4      4     4     4      4226   1000      4      5     4     5      5228   1000      4      4     4     4      4230   1000      4      5     5     5      4232   1000      4      5     4     4      4234   1000      4      4     4     5      4236   1000      5      5     5     5      5238   1000      4      4     4     4      4240   1000      4      4     4     4      4242   1000      4      4     4     4      4244   1000      5      5     5     5      5246   1000      5      5     5     5      5248   1000      4      4     4     4      4250   1000      4      4     4     4      4252   1000      5      5     5     5      5254   1000      4      4     4     4      4256   1000      5      5     5     5      5258   1000      5      5     5     5      5260   1000      5      5     5     5      5262   1000      5      5     5     5      5264   1000      5      5     5     5      5266   1000      5      5     4     5      5268   1000      5      5     4     5      5270   1000      5      5     5     5      5272   1000      4      5     5     5      5274   1000      4      4     4     4      4276   1000      5      5     5     5      5278   1000      4      4     4     4      4280   1000      4      4     5     5      5282   1000      4      4     4     4      4284   1000      4      4     5     5      5286   1000      5      5     5     5      5288   1000      4      4     4     4      4290   1000      4      4     5     5      5292   1000      4      4     4     5      4294   1000      4      4     4     4      4296   1000      4      4     4     4      4298   1000      4      5     5     5      5300   1000      4      5     5     5      5302   1000      5      5     5     5      5304   1000      4      5     5     5      5306   1000      4      5     5     5      5308   1000      4      4     4     4      4310   1000      4      4     4     5      5312   1000      4      5     5     5      5314   1000      4      5     5     5      5316   1000      4      4     4     4      4318   1000      4      5     5     5      5320   1000      4      5     4     4      4322   1000      4      4     5     4      4324   1000      4      4     4     5      4326   1000      4      5     5     5      5328   1000      2      2     3     3      2330   1000      3      2     2     3      3332   1000      3      2     2     3      3334   1000      2      2     2     3      2336   1000      2      2     2     2      2338   1000      2      2     2     2      2340   1000      2      3     3     3      3______________________________________