FUNGICIDES

Abstract: The invention relates to compounds of general formula I, where A<1>, R<1>, R<2> and Y are as defined in the description; and to their use as phytopathogenic fungicides.

Description: Fungicides [0001] This invention relates to compounds having fungicidal activity. [0002] In a first aspect the invention provides the use of a compound of general formula I, complexes and salts thereof as phytopathogenic fungicides (I) [0003] where [0004] A^ is 2-pyridyl or its N-oxide, each of which may be substituted by up to four groups at least one of which is haloalkyl; [0005] Y is a formula (D) or (E): -L-A 2 - -i -A 3 - (E) [0006] A z is heterocyclyl or carbocyclyl, each of which may be substituted; [0007] A 3 is heterocyclyl or carbocyclyl, each of which may be substituted, or acyl; [0008] L is a 3-atom linker, selected from the list: -Ν(R 5 )C(=X)Ν(R 6 )-, -N(R 5 )C(=X)CH(R 3 )-, -CH(R 3 )N(R 5 )CH(R 4 )-, -CH(R 3 )N(R 5 )C(=X)-, -N(R 3 )CH(R 4 )C(=X)- and -0-N(R 5 )C(=X)-; wherein A 1 is attached to the left hand side of linker L; [0009] L 1 is a 4-atom linker selected from the list: -N(R 9 )C(=X)-χ!-CH(R 7 )-, -N(R 9 )C(=X)CH(R 7 )CH(R 8 )-, -N(R9)C(=X)C(R 7 )=C(R 8 )-, -N(R 9 )C(R 7 )=C(R 8 )-C(=X)-, -N(R 9 )C(R 7 )=C(R 8 )-S0 2 -. -N(R 9 )C(=X)C(R 7 )(R 8 )-S0 2 - and -N(R 9 )C(=X)C(R 7 )(R 8 )-X 1 -: wherein A 1 is attached to the left hand side of linker L 1 ; [0010] R 1 , R2. R 3 , R 4 . R 7 and R 8 , which may be the same or different, are R b . cyano, nitro, halogen. -OR b , -SR b or optionally substituted amino: [0011] R5 and R^ which may be the same or different, are R D . cyano or nitro; or any R R 3 or R^ group, together with the interconnecting atoms, can form a 3-, 4-. 5- or 6-membered ring with any R 2 . R 4 or R 6 or any R 1 , R 2 . R 3 . R 4 , R 5 or R 6 group, together with the interconnecting atoms can form a 5- or 6-membered ring with A 2 ; [0012] or Rl and R 2 , or R 7 and R 8 , together with the interconnecting atoms, may form a 3-, 4-, 5- or 6-membered ring, which may be substituted; [0013] R D is alkyl. alkenyl, alkynyl. carbocyclyl or heterocyclyl, each of which may be substituted, or hydrogen or acyl; [0014] X is oxygen or sulfur; [0015] χl is oxygen, sulfur or-N(R 9 )-; and [0016] R 9 is R b , cyano or nitro, or R 9 and A 3 , R 1 , R 2 , R 7 or R 8 , together with the interconnecting atoms, may form a 3-, 4-, 5- or 6-membered ring, which may be substituted. [0017] Preferred substituents on the 2-pyridyl group (A' ) are halogen, hydroxy. cyano. nitro, SF5. trialkylsilyl, optionally substituted amino, acyl. or a group -R a , - OR a or -SR a . or a group -C(R a )=N-Q, where Q is -R a -OR a , -SR a or optionally substituted amino, wherein R a is alkyl, alkenyl, alkynyl, carbocyclyl or heterocyclyl. each of which may be substituted: or two adjacent substituents together with the atoms to which they are attached form an optionally substituted ring which can contain up to 3 hetero atoms. Preferably, the 2-pyridyl group is substituted at the 3 and/or 5 position. [0018] Preferred compounds are those in which one or more of the following features are present: [0019] A 2 is optionally substituted phenyl, optionally substituted heterocyclyl, optionally substituted cyclohexyl or optionally substituted cyclopropyl; or [0020] A J is optionally substituted phenyl, optionally substituted heterocyclyl or acyl; or [0021] R 1 . R 2 , R 3 , R 4 , R 7 and R 8 are hydrogen, optionally substituted alkyl, optionally substituted phenyl. cyano, acyl or halogen (more preferably R* and R 2 are hydrogen); or R5 and R6 are hydrogen, optionally substituted alkyl or acyl; or R 7 and R 8 are hydrogen, optionally substituted alkyl or acyl; or R 9 is hydrogen or optionally substituted alkyl; or the 2-pyridyl group (A^) is substituted by alkoxy, alkyl, cyano, halogen, nitro, alkoxycarbonyl, alkylsulfmyl, alkylsulfonyl or trifluoromethyl, (preferably chlorine or trifluoromethyl). [0022] Many of the compounds of formula I are novel. Therefore, according to a further aspect, the invention provides compounds of formula I where: Y is -L-A 2 - and: L is -NHC(=X)NH-; and A 2 is phenyl optionally substituted by halogen, haloalkyl, phenoxy, alkoxy. alkyl, CN, NO?, S0 2 -(N-tetrahydropyridinyl), alkylthio, acyl, phenylsulphonyl, dialkylamino, alkylsulphonyl, benzylsulphonyl, S(phenyl substituted by halogen): or A 2 is cycloalkyl; or naphthyl optionally substituted by NO 2 ; or L is -NHC(=0)CH(R 3 )-; R 3 is hydrogen, alkyl, phenyl, halogen or acyloxy; A 2 is phenyl optionally substituted by halogen, NO? or alkoxy; or thienyl; or imidazolyl; or pyrrolinyl substituted by alkoxy; or L is -CH(R 3 )N(R 5 )CH 2 -; R 3 is N-alkylcarbamoyl or alkoxycarbonyl; R 3 is hydrogen or acyl; A 2 is phenyl optionally substituted by alkyl, alkoxy. halogen. NO?, haloalkyl or phenoxy; or is naphthyl; or L is -CH(R 3 )NHC(=0)-; R J is N-alkylcarbamoyl or alkoxycarbonyl; A 2 is phenyl optionally substituted by alkoxy, halogen, NO?, haloalkyl, phenoxy or phenyl; or is cycloalkyl; or L is -0-NHC(=0)- and A 2 is phenyl substituted by alkyl; or Y is -Ll-A 3 - and: L 1 is -NHC(=0)(CH 2 ) -, a nd A- 3 is phenyl substituted by alkyl; or L 1 is -NHC(=S)NHCH 2 -, and A 3 is phenyl; or L 1 is -NHC(=0)CH(alkyl)S-, and A 3 is phenyl; or L 1 is -NHC(=0)OCH 2 -, -NHC(=O)(CH 2 ) 2 -, -NHC(=0)NHCH -, -NHC(=S)NHCH ? -, -N(alkyl)C(=0)CH?0- or -NHC(=0)CH 2 O-; R! is hydrogen; R 2 is hydrogen or alkoxycarbonyl; A J is phenyl optionally substituted by halogen, alkyl, phenyl, OH. alkoxy or alkoxycarbonyl; or fluorenyl; or pyridyl optionally substituted by halogen or haloalkyl; or thiadiazolyl substituted by alkyl: or benzthiazolyl optionally substituted by halogen or by phenyl substituted by halogen; or quinolinyl substituted by haloalkyl: or triazolyl substituted by alkyl or phenyl; or tetrazolyl substituted by alkyl or cycloalkyl; or pyrimidinyl substituted by alkyl: or benzoxazolyl; or imidazolvl substituted by alkyl; or thiazolinyl substituted by alkyl and methylene; or is -NHC(=0)CH(R 8 )N(R 9 )-; R! is hydrogen; R 2 is hydrogen or alkyl; R 8 and R 9 are each hydrogen or alkyl; A 3 is benzoyl optionally substituted by alkyl; or benzyloxycarbonyl; or alkoxycarbonyl; or L 1 is -NHC(=0)CH(alkyl)SO?-; R! and R 2 are each hydrogen; A J is phenyl; or L 1 is -NHC(=0)CH?X 1 -; where χl and A 3 form a 2-oxo-N-benzthiazolyl ring which is substituted by halogen; and R! and R 2 are each hydrogen. [0023] The invention also includes any of the compounds specifically exemplified hereinafter. [0024] Any alkyl group may be straight or branched and is preferably of 1 to 10 carbon atoms, especially 1 to 7 and particularly 1 to 5 carbon atoms. [0025] Any alkenyl or alkynyl group may be straight or branched and is preferably of 2 to 7 carbon atoms and may contain up to 3 double or triple bonds which may be conjugated, for example vinyl, allyl. butadienyl or propargyl. [0026] Any carbocyclyl group may be saturated, unsaturated or aromatic, and contain 3 to 8 ring-atoms. Preferred saturated carbocyclyl groups are cyclopropyl, cyclopentyl or cyclohexyl. Preferred unsaturated carbocyclyl groups contain up to 3 double bonds. A preferred aromatic carbocyclyl group is phenyl. The term carbocylic should be similarly construed. In addition, the term carbocyclyl includes any fused combination of carbocyclyl groups, for example naphthyl, phenanthryl. indanyl and indenyl. [0027] Any heterocyclyl group may be saturated, unsaturated or aromatic, and contain 5 to 7 ring-atoms up to 4 of which may be hetero-atoms such as nitrogen. oxygen and sulfur. Examples of heterocyclyl groups are furyl, thienyl, pyrrolyl. pyrrolinyl, pyrrolidinyl. imidazolvl, dioxolanyl, oxazolyl. thiazolyl. imidazolvl. imidazolinyl. imidazolidinyl. pyrazolyl. pyrazolinyl, pyrazolidinyl. isoxazolyl, isothiazolyl, oxadiazolyl. triazolyl, thiadiazolyl, pyranyl, pyridyl. piperidinyl, dioxanyl, mo holino. dithianyl. thiomorpholino, pyridazinyl, pyrimidinyl, pyrazinyl, piperazinyl, sulfolanyl. tetrazolyl, triazinyl. azepinyl. oxazepinyl. thiazepinyl. diazepinyl and thiazolinyl. In addition, the term heterocyclyl includes fused heterocyclyl groups, for example benzimidazolyl, benzoxazolyl, imidazopyridinyl, benzoxazinyl. benzothiazinyl, oxazolopyridinyl, benzofuranyl, quinolinyl, quinazolinyl, quinoxalinyl, dihydroquinazolinyl, benzothiazolyl, phthalimido. benzofuranyl, benzodiazepinyl, indolyl and isoindolyl. The term heterocyclic should be similarly construed. [0028] Any alkyl, alkenyl, alkynyl, carbocyclyl or heterocyclyl group, when substituted, may be substituted by one or more substituents. which may be the same or different, and may be selected from the list: hydroxy; mercapto; azido; nitro; halogen; cyano; acyl; optionally substituted amino; optionally substituted carbocyclyl; optionally substituted heterocyclyl; cyanato: thiocyanato: -SF5; -OR a ; - SR a and -Si(R a )3, where R a is alkyl, alkenyl, alkynyl, carbocyclyl or heterocyclyl, each of which may be substituted. In the case of any carbocyclyl or heterocyclyl group the list includes additionally: alkyl, alkenyl and alkynyl. each of which may be substituted. Preferred substituents on any alkyl, alkenyl or alkynyl group are alkoxy, haloalkoxy or alkylthio, each containing 1 to 5 carbon atoms; halogen; or optionally substituted phenyl. Preferred substituents on any carbocyclyl or heterocyclyl group are alkyl, haloalkyl, alkoxy, haloalkoxy or alkylthio. each containing 1 to 5 carbon atoms; halogen; or optionally substituted phenyl. [0029] In the case of any alkyl group or any unsaturated ring-carbon in any carbocyclyl or heterocyclyl group the list includes a divalent group such as oxo or imino, which may be substituted by optionally substituted amino. R a or -OR a . Preferred groups are oxo. imino. alkylimino. oximino, alkyloximino or hydrazono. [0030] Any amino group, when substituted and where appropriate, may be substituted by one or two substituents which may be the same or different, selected from the list: optionally substituted alkyl. optionally substituted amino, -OR a and acyl groups. Alternatively two substituents together with the nitrogen to which they are attached may form a heterocyclyl group, preferably a 5 to 7-membered heterocyclyl group, which may be substituted and may contain other hetero atoms, for example morpholino, thiomorpholino or piperidinyl. [0031] The term acyl includes the residues of sulfur and phosphorus-containing acids as well as carboxylic acids. Typically the residues are covered by the general formulae -C(=X a )R c , -S(O) p R c and -P(=X a )(OR a )(OR ), where appropriate X is O or S, R c is as defined for R a , -OR a , -SR a , optionally substituted amino or acyl; and p is 1 or 2. Preferred groups are -C(=0)R d . -C(=S)R d ,and -S(O) p R d where R d is alkyl, C\ to C5 alkoxy, C\ to C5 alkylthio, phenyl, heterocyclyl or amino, each of which may be substituted. [0032] By the term "salts" is meant salts the cations or anions of which are known and accepted in the art for the formation of salts for agricultural or horticultural use. Suitable salts with bases include alkali metal (e.g. sodium and potassium), alkaline earth metal (e.g. calcium and magnesium), ammonium and amine (e.g. diethanolamine, triethanolamine. octylamine, morpholine and dioctylmethylamine) salts. Suitable acid addition salts, e.g. formed by compounds of formula I containing an amino group, include salts with inorganic acids, for example hydrochlorides, sulphates, phosphates and nitrates and salts with organic acids for example acetic acid. [0033] Complexes of compounds of the invention are usually formed from a salt of formula MAn 2 , in which M is a divalent metal cation, e.g. copper, manganese, cobalt, nickel, iron or zinc and An is an anion, e.g. chloride, nitrate or sulfate. [0034] In cases where the compounds of the invention exist as the E and Z isomers. the invention includes individual isomers as well as mixtures thereof. 5 [0035] In cases where compounds of the invention exist as tautomeric isomers. the invention includes individual tautomers as well as mixtures thereof. [0036] In cases where the compounds of the invention exist as optical isomers (for example where R 1 and R 2 are different), the invention includes individual isomers as l o well as mixtures thereof. [0037] The compounds of the invention have activity as fungicides, especially against fungal diseases of plants, e.g. mildews and particularly cereal powdery mildew (Erysiphe graminis) and vine downy mildew (Plasmopara viticola), rice 15 blast (Pyricularia oryzae), cereal eyespot (Pseudocercosporella herpolrichoides), rice sheath blight (Pellicularia sasakii), grey mould (Botrytis cinerea), damping off (Rhizoctonia solani), wheat brown rust (Puccinia recondita), late tomato or potato blight (Phytophthora infestans), apple scab (Venturia inaequalis). and glume blotch (Leptosphaeria nodorum). Other fungi against which the compounds may be active 20 include other powdery mildews, other rusts, and other general pathogens of Deuteromycete, Ascomycete. Phycomycete and Basidomycete origin. [0038] The invention thus also provides a method of combating fungal pests such as phytopathogenic fungi at a locus infested or liable to be infested therewith, which 5 comprises applying to the locus a compound of formula I or a complex or salt thereof. [0039] The invention also provides an agricultural composition comprising a compound of formula I or a complex or salt thereof in admixture with an 0 agriculturally acceptable diluent or carrier. [0040] The composition of the invention may of course include more than one compound of the invention. [0041] In addition, the composition can comprise one or more additional active ingredients, for example compounds known to possess plant-growth regulant, herbicidal, fungicidal. insecticidal, acaricidal, antimicrobial or antibacterial properties. Alternatively the compound of the invention can be used in sequence with the other active ingredient. [0042] The diluent or carrier in the composition of the invention can be a solid or a liquid optionally in association with a surface-active agent, for example a dispersing agent, emulsifying agent or wetting agent. Suitable surface-active agents include anionic compounds such as a carboxylate, for example a metal carboxylate of a long chain fatty acid; an N-acylsarcosinate: mono- or di-esters of phosphoric acid with fatty alcohol ethoxylates or alkyl phenol ethoxylates or salts of such esters; fatty alcohol sulfates such as sodium dodecyl sulfate, sodium octadecyl sulfate or sodium cetyl sulfate; ethoxylated fatty alcohol sulfates; ethoxylated alkylphenol sulfates; lignin sulfonates; petroleum sulfonates; alkyl-aryl sulfonates such as alkyl-benzene sulfonates or lower alkylnaphthalene sulfonates, e.g. butyl-naphthalene sulfonate; salts of sulfonated naphthalene-formaldehyde condensates: salts of sulfonated phenol-formaldehyde condensates; or more complex sulfonates such as the amide sulfonates, e.g. the sulfonated condensation product of oleic acid and N-methyl taurine; the dialkyl sulfosuccinates. e.g. the sodium sulfonate of dioctyl succinate; acid derivatives of alkyl glycosides and alkylpolyglycosides materials and their metal salts, e.g. alkyl polyglycoside citrate or tartrate materials: or mono-, di- and tri-alkyl esters of citric acid and their metal salts. [0043] Νonionic agents include condensation products of fatty acid esters, fatty alcohols, fatty acid amides or fatty-alkyl- or alkenyl-substituted phenols with ethylene and/or propylene oxide; fatty esters of polyhydric alcohol ethers, e.g. sorbitan fatty acid esters; condensation products of such esters with ethylene oxide, e.g. polyoxyethylene sorbitan fatty acid esters; alkyl glycosides. alkyl polyglycoside materials: block copolymers of ethylene oxide and propylene oxide; acetylenic glycols such as 2,4,7,9-tetramethyl-5-decyne-4,7-diol, ethoxylated acetylenic glycols; acrylic based graft copolymers; alkoxylated siloxane surfactants; or imidazoline type surfactants, e.g. l-hydroxyethyl-2-alkylimidazoline. [0044] Examples of a cationic surface-active agent include, for instance, an aliphatic mono-, di-, or polyamine as an acetate, naphthenate or oleate; an oxygen-containing amine such as an amine oxide, polyoxyethylene alkylamine or polyoxypropylene alkylamine; an amide-linked amine prepared by the condensation of a carboxylic acid with a di- or polyamine: or a quaternary ammonium salt. [0045] The compositions of the invention can take any form known in the art for the formulation of agrochemicals, for example, a solution, an aerosol, a dispersion, an aqueous emulsion, a microemulsion, a dispersible concentrate, a dusting powder, a seed dressing, a fumigant, a smoke, a dispersible powder, an emulsifiable concentrate, granules or an impregnated strip. Moreover it can be in a suitable form for direct application or as a concentrate or primary composition which requires dilution with a suitable quantity of water or other diluent before application. [0046] A dispersible concentrate comprises a compound of the invention dissolved in one or more water miscible or semi-water miscible solvents together with one or more surface active and/or polymeric material. Addition of the formulation to water results in the crystallisation of the active ingredient, the process being controlled by the surfactants and/or polymers resulting in a fine dispersion. [0047] A dusting powder comprises a compound of the invention intimately mixed and ground with a solid pulverulent diluent, for example, kaolin. [0048] An emulsifiable concentrate comprises a compound of the invention dissolved in a water-immiscible solvent which forms an emulsion or microemulsion on addition to water in the presence of an emulsifying agent. [0049] A granular solid comprises a compound of the invention associated with similar diluents to those that may be employed in dusting powders, but the mixture is granulated by known methods. Alternatively it comprises the active ingredient absorbed or coated on a pre-formed granular carrier, for example, Fuller's earth, attapulgite, silica or limestone grit. [0050] Wettable powders, granules or grains usually comprise the active ingredient in admixture with suitable surfactants and an inert powder diluent such as clay or diatomaceous earth. [0051] Another suitable concentrate is a flowable suspension concentrate which is formed by grinding the compound with water or other liquid, surfactants and a suspending agent. [0052] The concentration of the active ingredient in the composition of the present invention, as applied to plants is preferably within the range of 0.0001 to 1.0 per cent by weight, especially 0.0001 to 0.01 per cent by weight. In a primary composition, the amount of active ingredient can vary widely and can be, for example, from 5 to 95 per cent by weight of the composition. [0053] The invention is generally applied to seeds, plants or their habitat. Thus, the compound can be applied directly to the soil before, at or after drilling so that the presence of active compound in the soil can control the growth of fungi which may attack seeds. When the soil is treated directly the active compound can be applied in any manner which allows it to be intimately mixed with the soil such as by spraying, by broadcasting a solid form of granules, or by applying the active ingredient at the same time as drilling by inserting it in the same drill as the seeds. A suitable application rate is within the range of from 5 to 1000 g per hectare, more preferably from 10 to 500 g per hectare. [0054] Alternatively the active compound can be applied directly to the plant by, for example, spraying or dusting either at the time when the fungus has begun to appear on the plant or before the appearance of fungus as a protective measure. In both such cases the preferred mode of application is by foliar spraying. It is generally important to obtain good control of fungi in the early stages of plant growth, as this is the time when the plant can be most severely damaged. The spray or dust can conveniently contain a pre- or post-emergence herbicide if this is thought necessary. Sometimes, it is practicable to treat the roots, bulbs, tubers or other vegetative propagule of a plant before or during planting, for example, by dipping the roots in a suitable liquid or solid composition. When the active compound is applied directly to the plant a suitable rate of application is from 0.025 to 5 kg per hectare, preferably from 0.05 to 1 kg per hectare. [0055] In addition, the compounds of the invention can be applied to harvested fruits, vegetables or seeds to prevent infection during storage. [0056] In addition, the compounds of the invention can be applied to plants or parts thereof which have been genetically modified to exhibit a trait such as fungal and/or herbicidal resistance. [0057] In addition the compounds of the invention can be used to treat fungal infestations in timber and in public health applications. [0058] Compounds of the invention may be prepared, in known manner, in a variety of ways. Such processes for the preparation of novel compounds of formula I constitute a feature of the invention. [0059] Compounds of formula la. 1 e compounds of general formula I where Y is a formula (D) and L is -N(R^)C(=X)NH-. can be prepared b\ reacting compounds of tormula II or their hv drochloπde salts, with compounds of formula III according to reaction scheme 1 A. preferred base is triethylamine Scheme (ii) [0060] Compounds of formula lb, l e compounds of general formula I where Y is of formula (D) and L is -N(R5)C(=0)CH(R 3 )-, may be prepared by reacting compounds of formula IV with compounds of formula II according to reaction scheme 2 A variety of methods are available to the chemist, for example, generation of the acid chloride of IV, using reagents such as phosphoryl chloride or oxalyl chloride, followed by addition of II Alternatively, carbonyl diimidazole (CDI) can be used to activate compounds of formula IV prior to addition of II Scheme 2 (II) [0061] Compounds of formula Ic and Id, l e compounds of general formula I where Y is of formula (D) and L is -CH(R 3 )-N(R 5 )-W- and W is -C(=X)- or -CH(R 4 )-, wherein R- 3 is alkoxycarbonyl or carbamovl respectively, can be prepared by various methods known to the skilled chemist In particular, compounds of formula Ic or Id may be prepared trom solid suppoπed reagents of formula V according to reaction scheme 3. wherein the black circle represents Merrifield resin. Scheme 3 (Id) [0062] Compounds of formula le. I e. compounds of general formula I where Y is of formula (D) and L is -CH(R J )N(R- )C(=X)- may be prepared by reacting compounds of formula VI with compounds of formula VII according to reaction scheme 4. Scheme 4 (VI) (le) [0063] Compounds of formula If. i e compounds of general formula I where Y is of formula (B) and L 1 is -N(R 9 )C(=X)-L 2 -. where L 2 is -CH(R 7 )CH(R 8 )-, -C(R 8 )(R 7 )-X 1 - or -C(R 7 )=C(R K may be prepared according to Scheme 5 b\ reacting compounds of formula VIII or their hydrochloride salts with compounds of formula IX in the presence of a base, w here Q ' is a leaving group such as halogen. preferabK chlorine A preferred base is tπethv lamine Compounds of formula IX can either be isolated or generated in situ Scheme (VIII) (IX) (if) [0064] Compounds of formula Ig. i.e compounds of general formula I where Y is of formula (E) and L ' IS -N(R 9 )C(=X)-NH-CH(R 7 )-, may be prepared according to Scheme 6 by reacting compounds of formula VIII or their hydrochloride salts with compounds of formula X A preferred base is lamιne Scheme 6 [0065] Compounds of formula Ih. 1 e compounds of general formula I where Y is of formula (E) and L 1 is -N(R 9 )C(=X)-C(R 7 )(R 8 )-X 1 - wherein R 7 and R 8 are not both hydrogen and X is oxygen. ma\ also be prepared according to Scheme 7 by reacting compounds of formula XI where Q ' is a leaving group, preferably bromine, with A— χl -H in the presence ot a suitable base, preferably potassium .er.-butoxide Scheme 7 (XI) (Ih) [0066] Compounds of formula Ii. i.e. compounds of general formula I where Y is of formula (E) and L 1 is -N(R 9 )C(R 7 )=C(R 8 )-C(=X)- wherein R 7 is not hydrogen, may be prepared according to Scheme 8 by reacting compounds of formula VIII or their hydrochloride salts in the presence of a suitable base such as sodium acetate with compounds of formula XII. Scheme 8 NaOAc (VIII ) (XII (10 [0067] Compounds of formula Ij. i.e. compounds of general formula I where Y is of formula (E) and I_ l is -N(R )CH=C(R 8 )-C( =X)-. may be prepared according to Scheme 9 by reacting compounds of formula VIII or their hydrochloride salts in the presence of a suitable base such as sodium acetate with compounds of formula XIII. Scheme 9 NaOAc (VIII ) (XIII) (lj) [0068] Compounds of formula Ik. I e compounds of general formula I where Y is of formula (E) and L ! is -N(R 9 )C(=X)0-C(H)(R 7 )-, mav be prepared according to Scheme 10 bv reacting compounds of formula VIII or their h\ drochloπde salts in the presence of a suitable base such as triethylamine with compounds of formula XIV Scheme 10 (VIII) (Ik) [0069] Collections of compounds of formula (I) may also be prepared in a parallel manner, either manually, automatically or semi-automaticalh This parallel preparation may be applied to the reaction procedure, work-up or purification of products or intermediates For a review of such procedures see by S H DeWitt in "Annual Reports in Combinatorial and Molecular Diversm Automated synthesis " . Volume 1. Verlag Escom 1997. pages 69 to 77 [0070] Furthermore, compounds of the formula (I) may be prepared using so d- supported methods, where the reactants are bound to a synthetic resin See for example Barry A Bunin in 'The Combinatorial Index " '. Academic Press. 1998 and ' The tea-bag method " (Houghten. US 4.631. 1 1 : Houghten et al.. Proc. Natl. Acad. Sci. 1985. 82. 5131 -5135). [0071 ] The preparation of the processes described herein yields compounds of the formula ( I ) in the form of substance collections which are termed libraries. The present invention also relates to libraries which comprise at least two compounds of the formula (I ). [0072] Intermediates of formula V may be prepared in turn from compounds of formula XV. by methods analogous to that depicted in reaction scheme 1 1. Compounds of formula Va may be prepared by treating XV with a compound of formula XVI in the presence of a suitable base, such as triethylamine. Compounds of formula Vb may be prepared from compounds of formula XVa by treatment with compounds of formula XVII. sodium cvanoborohvdnde and acetic acid followed by reaction with compounds of formula XVIII and triethylamine. Scheme 1 (Va) (XV) (XVa) (Vb) [0073] Compounds of formula XV can be prepared using similar methods to reaction scheme 12. Scheme 12 (XVa) (XV) [0074] Intermediates of formula VIII may be prepared by methods described in international application PCT'GB/99/00304. [0075] Intermediates of formula IX can prepared from the corresponding carboxylic acid by methods known to the skilled chemist. [0076] Intermediates of formula XI may be prepared according to Scheme 13 by reacting compounds of formula VIII in the presence of a suitable base such as triethylamine with compounds of formula XIX. in the presence of a carbonyl diimidazole (CDI). Scheme [0077] Other methods will be apparent to the chemist skilled in the art. as will be the methods for preparing starting materials and intermediates [0078] The invention is illustrated in the following Examples Structures of isolated, novel compounds were confirmed by Η NMR (in CDCI3) and/or other appropriate analvses [0079] Example 1 N-(2-Chlorophenyl)- V'-[(3-chloro-5-trιfluoromethyl-2-pyrιdyl)methyl " |thιourea (Compound 30) To a suspension of (3-chloro-5-trιfluoromethvl-2-pyπdyl)methylamιne hvdrochlonde ( 0 12 g) and 2-chlorophenvlιsothιocvanate (0 09 g) in dry tetrahy drofuran ( 10 ml) was added 10 drops ot triethylamine The mixture was stirred at room temperature overnight The solvent was removed bv evaporation in vacuo and the residue extracted with ethyl acetate and washed with 2M hvdrochloπc acid The layers were separated and the organic phase was evaporated to dryness to give the title product. m p 126°C [0080] The following compounds of formula Im (see Table A). 1 e compounds of general formula I where Y is of formula (D) and A^ is 3-Cl-5-CF3-2-pyrιdyl. R^ and R are hydrogen and L is -ΝHC(=X)ΝH-, may be prepared by methods analogous to those of Example 1 (lm) Table A [00811 Example 2 .V-[(3-Chloro-5-trifluoromethyl-2-pyridyl)methyll-2-nitrophenylacetamide (Compound 108) To a stirred suspension of 2-nitrophenylacetic acid (0.36 g) in dry toluene (5 ml) at room temperature was added phosphoryl chloride (0.37 g) and stirring was continued overnight. Meanwhile a solution of the amine was prepared. (3-Chloro-5- tπfluoromethyl-2-pyrιdyl)meth\ lamine hvdrochlonde (0 49 g) in drv toluene (5 ml) and tπethv lamine ( 1 23 g) was stirred at room temperature for 1 hour and then filtered The solid was washed w ith drv toluene and the combined filtrates were added dropwise to the above suspension ot acid chloride with ice-cooling After addition, the mixture was stirred at room temperature ov ernight Dichioromethane was added and the mixture was washed with water The aqueous lav er was separated and back-extracted with dichioromethane The combined organic extracts were washed w ith saturated sodium bicarbonate solution, then brine, then dried (MgSC>4), and the solvent removed The resulting residue was purified by silica gel hromatographv eluting with eth l acetate/light petroleum (b p 40-60°C) to give the title product, m p 123-4°C [0082] The following compounds of formula In (see Table B), l e compounds of general formula I where Y is ot formula ( D) and Λ ' IS 3-Cl-5-CF3-2-pyrιd l, R ' and R- are hydrogen and L is -NHC(=0)CH(R J )-. may be prepared by methods analogous to those of Example 2 (In) Table B [0083] The 'H N.M.R. data of those compounds in Table B which were not solid at room temperature are presented below. Compound 101 ! H N.M.R. (CDC1 3 ) δ(ppm) 3.9 (2H. s), 4.7 (2H, d), 7.0 (2H. d), 7.1 (IH, br.s), 7.3 (2H. m), 7.9 (IH. s) and 8.7 (IH, s); Compound 102 l H N.M.R. (CDCI3) δ(ppm) 0.9 (3H. t).1.9 (IH. m).2.25 (IH. m).3.4 (IH. t), 4.7 (2H. qd).6.9 (IH. bs).7.2-7.4 (5H. m).7.9 (IH. s).8.65 (IH. s); Compound 103 ] H N.M.R. (CDCI3) δ(ppm) 2.25 (3H. s), 4.75 (2H, d), 6.2 (IH, s), 7.4 (3H. m), 7.5 (2H. m).7.7 (IH, bs).8.0 (IH. s), 8.75 (IH, s); Compound 104 ] H N.M.R. (CDCI3) δ(ppm) 3.65 (2H. s).3.8 (3H. s), 3.9 (3H. s).4.7 (2H. d).6.8-7.0 (3H. m).7.1 (IH. bs).7.9 (IH, s), 8.75 (IH, s); and Compound 105 l H N.M.R. (CDCI3) δ(ppm) 4.8 (2H. d).5.1 (IH, s).7.1-7.4 (IH, m).7.9 (IH. s) and 8.65 (lH.s). 100841 Example 3 Methyl 2-r(2-chlorobenzv l)amιnol- ~ *-f3-chloro-5-(tπfluoromethv D-2- pyndv llpropanoate (Compound 218) To a mixture of the product from stage h) below in tetrahvdrofuran ( 12 ml ) and methanol (4 ml ) was added 1 M sodium methoxide in methanol (4 drops) and the mixture was heated at 65°C for 3 davs The mixture was filtered and the solid washed successivelv with poπions (5 ml ) of methanol. dichioromethane and methanol The combined filtrates were evaporated to giv e the title product. Η N M R δ (ppm) 8 63 ( I H. s ). 7 89 ( I H. s). 7 15-7 35 (4H. m). 3 92 (3H. m). 3 74 (3H. s ). 3 42 (2H. d) [0085] Preparation of startme materials N-/tert-Butoxycarbonyl)glvcιne cesium salt To a mixture of N- .<./ /-butoxv carbonyl)glycιne (42 0 g) in water (250 ml) was added cesium carbonate (39 1 g) The mixture was stirred at room temperature tor 10 minutes The water was removed by azeotropic distillation with toluene to give the title product [0086] Attachment to Solid Support Merπfield resin (61 2 g) was swollen in drv dimethvlformamide (350 ml) The product from stage a) (75 5 g) was added followed by more dr dimeth lformamide (250 ml) and the mixture was stirred at 65°C overnight On cooling, the mixture was filtered and the solid washed successively with portions (400 ml) ot dimethvlformamide. dimethv lformamide/water ( 1 1 ). water, dichioromethane. methanol. dichioromethane and finally methanol (x2) The solid was dried in a vacuum oven overnight [0087] Treatment with Trifluoroacetic Acid To a mixture of the product from stage b) (76 2 g) swollen in drv dichioromethane (660 ml) was added trifluoroacetic acid (220 ml) and the mixture was stirred at room temperature for 5 5 hours The mixture was filtered and the solid was washed successively with portions (400 ml) of dichioromethane (x2), methanol. dichioromethane and methanol (\2) The resin was dried overnight [0088] Treatment with Benzophenone Imine To a mixture ot the product from stage o (76 6 g) swollen in drv dichioromethane (650 ml) was added benzophenone imine (61 ml) in dichioromethane ( 100 ml) and the mixture stirred overnight The mixture was filtered and the solid was successively washed with portions (400 ml) of dichioromethane, 20% aqueous tetrahvdrofuran (x2), tetrahvdrofuran, dichioromethane. methanol. dichioromethane and methanol (x2) The solid was dried in a v acuum o en ov ernight [0089] Electrophihc Substitution of the Imine To a mixture of the product from stage d) (40 4 g) swollen in .Vmethylpyrrohdinone (250 ml) was added phosphazine base P( l )-.t-7.-Bu-tπs(tetramethylene) (38 ml) 3- Chloro-2-chloromethyl-5-trιfluoromethylpyndιne (42 4 g) was then added and the mixture was stirred at room temperature overnight The mixture was filtered and the solid was washed successively with portions (200 ml) of N-methylpyrrohdinone (x2), dichioromethane (x2) methanol. dichioromethane and methanol (x2) The solid was dried in a vacuum oven overnight [00901 Conversion of Imine to Amine Hv drochlonde To a mixture of the product from stage e) (52 1 g) swollen in tetrahydrofuran (750 ml) was added 2M hydrochloric acid (250 ml) The mixture was stirred for 4 hours and then filtered The solid was washed successively with portions (250 ml) of tetrahydrofuran (x2). dichioromethane (\2). methanol, dichioromethane, methanol and diethyl ether The solid was dried in a vacuum oven overnight [00911 Conversion to Amine A mixture of the product from stage f) in 10% triethylamine in dichioromethane was stirred at room temperature for 2 hours The mixture was filtered and the solid was stirred in 5% tπethvlamine in dichioromethane for 1 hour The mixture was filtered again, and the solid was stirred in dichioromethane for 1 hour. The mixture was filtered and the solid washed successively with portions of methanol. dichioromethane. methanol and diethyl ether (x2). The solid was dried in a vacuum oven overnight [00921 Conversion of Primary Amine to Secondary Amine A mixture of the product from stage g) (4 2 mmol) in tnmethylortho formate (90 ml) was treated with 2-chlorobenzaldehyde (42 mmol) and stirred at room temperature for 6 hours Sodium cvanoborohvdnde (42 mmol ) followed by acetic acid ( 1 3 ml) was then added and the mixture stirred at room temperature for 16 hours. The mixture was filtered and the solid was washed successively with portions of aqueous tetrahydrofuran. tetrahydrofuran. methanol. dichioromethane. methanol. dichioromethane, methanol and diethyl ether The solid was dried in a vacuum oven overnight [0093] The following compounds of formula Ip (see Table C), i.e. compounds of general formula I where Y is of formula (D) and A' is 3-Cl-5-CF3-2-pyπdyl, Rl and R z are hv drogen and L is -CH(R , )N(R- ) )CH -. may be prepared by methods analogous to those of Example 3 Table C [00941 Example 4 Methyl 2-bromobenzoylamino-3-G-chloro-5-trifluoromethyl-2-pyridyl )propionate (Compound 321 ) To a mixture of the product from Example 3 stage g) in dry dichioromethane was added triethylamine and the solution was stirred for 15 minutes. 2-Bromobenzoyl chloride in dry dichioromethane was added, and the mixture was stirred at room temperature overnight. The mixture was filtered and the solid was washed successively with portions ( 125 ml) of dichioromethane (x2). methanol. dichioromethane. methanol. dichioromethane (x2). methanol and diethyl ether (x2). The solid was dried in a vacuum oven overnight. To this solid in tetrahydrofuran ( 12 ml) and methanol (4 ml) was added 1 M sodium methoxide in methanol (4 drops) and the mixture was heated at 65°C for 3 days. The mixture was filtered and the solid washed successively with portions ( 5 ml) of methanol. dichioromethane and methanol. The combined filtrates were evaporated to give the title product. Η N.M.R δ (ppm) 8.62 (s). 7.3 1 (s), 7.56 (2H. m). 7.37 (m), 7.29 (m). 5.40 (m). 3.76 (3H. s ) and 3.71 (2H. m). [0095] The following compounds of formula Iq (see Table D); i.e. compounds of general formula I where Y is of formula ( D) and A ' is 3-Cl-5-CF3-2-pyridyl. R' and R2 are hydrogen and L is -CH(R J )NHC(=0)-. may be prepared by methods analogous to those of Example 4. (Iq) Table D [00961 Example 5 iV-[2-(3-Chloro-5-tπfluorometh l-2-pyrιdyl)ethyll-2.6-dιchlorobenzamιde (Compound 401 ) To a suspension of 2-(3-chloro-5-tnfluoromethvl-2-pyndyl)ethylammonium chloride (0 2 g) in dry dichioromethane at 10°C was added 2.6-dιchlorobenzov l chloride (0 13 ml) followed by dropwise addition of dry triethylamine (0 3 ml) The mixture was warmed with stirring to 22°C over 18 hours The mixture was evaporated on to flash silica Chromatography over silica eluting with 20-50% diethyl ether in light petroleum (b p 40-60°C) gave the title product, m p 103-5°C [0097[ Preparation of Starting Material 2-(3-Chloro-5-tnfluoromethyl-2-pyndv Dethylammonium chloride To a solution of the product from Example 6 ( 1 0 g) in ethanol ( 10 ml) was added hydrazine hydrate (0 15 ml) and the mixture was heated under reflux for 3 hours Concentrated hydrochloric acid ( 1 ml) was added and the mixture was heated at 80°C for 1 hour to give a filterable precipitate The mixture was cooled to 10°C. filtered and then evaporated to dryness in vacuo The residue was dissolved in water ( 10 ml) and then basified to greater than pH 10 using 2M aqueous sodium hydroxide solution The aqueous solution was ether extracted (3x15 ml) and the combined extracts were brine washed (2x 10 ml) The organic extract was dried (MgSO.}). the filtrate acidified with 6M hydrogen chloride in diethyl ether (5 ml) and evaporated to dryness The solid residue was triturated with ethyl ether, filtered and dried in \ acuo to give the title compound, m p 188-92°C [00981 Example 6 2-{2-r3-Chloro-5-(trιfluorometh\ l)-2-pyndyllethv - 1.3-ιsoιndolιnedιone (Compound 402) To a solution of the product from Example 7 (5 63 g) in glacial acetic acid (50 ml) was added 48% hydrogen bromide solution ( 10 ml) and the mixture was heated at 120°C for 2 hours The cold mixture was evaporated in vacuo and partitioned between water ( 100 ml) and dichioromethane ( 100 ml) The aqueous layer was separated and extracted with dichioromethane (2x10 ml) The combined extracts were water washed (2x20 ml), dried (MgSO. ), and evaporated onto flash silica Chromatography over silica eluting with 3-30% diethvl ether in light petroleum (b p 40-60°C) gave the title compound, m p 147-8°C [00991 Example 7 Diethv l 2-[3-chloro-5-(tπfluoromethyl)-2-pyπdyl1-2-[(l 3-dιoxo-2.3-dιhvdro-l H-2- lsoindolv Dmethyllmalonate (Compound 403) To a suspension ot 60% sodium hvdnde (0 65 g) in drv dimethvlformamide (20 ml) at 0°C was added a solution ot diethyl 2-(3-chloro-5-tπfluoromethyl-2- pyπdyl)malonate (5 g) in dry dimethvlformamide ( 10 ml) and the mixture was stirred for 15 minutes A solution of N-bromomethv lphthahmide (3 55 g) in dry dimethv lformamide ( 10 ml) was added dropw ise and the mixture was warmed with stirring to 22°C over 18 hours Glacial acetic acid (1 ml) was added and the mixture was poured into cold water (500 ml) The aqueous solution was extracted with diethyl ether (3x150 ml) and the combined extract was water washed (3x100 ml) The organic extract was dried (MgSO.).) and evaporated to give a crude product Tπturation with diethyl ether/light petroleum (b p 40-60°C) ( 1 1 ) gave the title compound, m p 159-61 °C [0100] Preparation of Starting Materials Diethv 1 2-(3-chloro-5-tnfluoromethyl-2-pyrιdyl)malonate To a suspension of 60% sodium hydride in mineral oil (5 28 g) in dry dimethv lformamide (50 ml) at 0°C was added a solution of diethv l malonate ( 10 ml) in dry dimethvlformamide (25 ml) and the mixture was stirred for 30 minutes A solution of 2.3-dιchloro-5-(tπfluoromethyI)pyπdιne (9 8 ml) in drv dimethvlformamide (10 ml) was added dropwise and the mixture warmed with stirring to 22°C over 18 hours Acetic acid (7 5 ml) in diethyl ether (20 ml) was added dropwise and the mixture was stirred until hydrogen evolution had ceased The mixture was diluted with dieth l ether (600 ml) and then water washed (3x200 ml) The organic extract was dried (MgSO.4) and evaporated onto flash silica. Chromatography over silica eluting with 0-20% diethyl ether in light petroleum (b.p. 40-60°C) gave the title compound. Η N.M.R. (CDCI3) δ(ppm) 1.28 (6H. t. 2x CH^CH . 4.30 (4H. q. 2xCH 2 CH,). 5.24 (I H. s. CH(CO : Et) : ). 7.96 ( I H. s. py-H), 8.74 ( I H. s. py-H). [01011 Example 8 (Compound 501 ) To a solution of 0-{ [3-chloro-5-(trifluoromethyl)-2-pyridyl]methyl} hydroxylamine (0.4 g) and triethylamine (0.18 g) in tetrahydrofuran (20 ml) was added 2.6- dichlorobenzoyl chloride (0.37 g). The reaction mixture was stirred for 20 hours at room temperature before filtering the solution and evaporation of the filtrate. The resulting residue was redissolved in ethyl acetate and washed successively with dilute hydrochloric acid, saturated sodium bicarbonate solution and water. The organic phase was dried, filtered and evaporated to yield the crude product which was further purified by silica gel column chromatography to give the title compound. [0102] Preparation of Starting Material Q-(r3-Chloro-5-(trifluoromethyl)-2-pyrid\i]methyl| hvdroxylamine To a solution of N-hydroxyphthalimide (3.55 g) in dimethvlformamide (50 ml) was added potassium carbonate (3.0 g) to give a thick yellow suspension which was stirred for 1 hour. 3-Chloro-2-chloromethyl-5-trifluoromethylpyridine (5.0 g) was added and the reaction stirred at room temperature for 20 hours. The mixture was filtered and the filtrate poured into water. The resulting white solid was isolated by filtration, washed with water, redissolved in ethyl acetate and the organic solution dried and evaporated to yield the intermediate phthalimide as a white solid. The phthalimide (2.0 g) was dissolved in methanol (20 ml) and the resulting solution treated with hydrazine hydrate (0.42 g). The reaction was left to stand for 19 hours before heating at reflux for 3 hours to yield a white precipitate. The reaction mixture was filtered and the methanol filtrate evaporated. The residue was treated with diethyl ether and refiltered. Evaporation of the filtrate yielded the title compound as a green vellow oil. [0103] The following compounds of general formula I where Y is of formula (D) and A' is 3-Cl-5-CF3-2-pyridyl. R 1 and R 2 are hydrogen and L is -0-NHC(=0)-. may be prepared by methods analogous to those of Example 8: Compound 501 m.p. 127-9°C and Compound 502 m.p. 108-10°C [01041 Example 9 N-[(3-Chloro-5-trifluoromethyl-2-pyridyl)methyl1-3-(2-tolyl)propionamide (Compound 602) To a mixture of (3-chloro-5-trifluoromethyl-2-pyridyl)methylamine hydrochloride ( 1 mmol. 0.247 g) in tetrahydrofuran (5 ml) was added triethylamine (2 mmol. 0.202 g) at room temperature and the mixture was stirred at room temperature for 1 hour. The mixture was filtered and the filtrate added to a solution of 3-(2-tolyl)propionyl chloride ( 1.1 mmol, 0.2 g) in tetrahydrofuran (5 ml) at room temperature. After 4 hours stirring at room temperature the solvent was evaporated and the residue washed with water. The solid was filtered and washed with diethyl ether/light petroleum (1 :20) to give the title product, m.p. 152-3°C. [0105] Example 10 Λ r -Benzyl-Λ r '-(3-chloro-5-trifluoromethyl-2-pyridyl)methylthiourea (Compound 604) To a mixture of (3-chloro-5-trifluoromethyl-2-pyridyl)methviamine hydrochloride (0.12 g) and benzylisothiocyanate (0.1 1 g ) in dry tetrahydrofuran ( 10 ml) was added triethylamine ( 10 drops) and the mixture stirred at room temperature for 12 hours. The solvent was evaporated and ethyl acetate added. The mixture was washed with 2M hydrochloric acid and then with saturated sodium bicarbonate solution. The organic layer was separated and the solvent removed to give the title product. Η N.M.R. δ(ppm) 4.7 (2H. broad s ). 4.95 (2H. d). 6.9 ( I H. broad s). 7.3-7.55 (6H. m), 7.95 ( I H, st and 8.58 (I H, s). [01061 Example 1 1 N-[(3-Chloro-5-trifluoromethyl-2-pyridyl)methyl1-2-phenylthiopropanamide (Compound 615) A mixture of thiophenol (55 mg) and potassium tert-butoxide (56 mg) in tetrahydrofuran (5 ml) was stirred at room temperature for 30 minutes. Starting material (see below) ( 173 mg) was added and the mixture was heated at 65°C with stirring for 2 hours. When cool, the mixture was evaporated and the residue was purified by silica gel chromatography to give the title product. Η N.M.R. δ(ppm) 1.6 (3h. d). 3.9 (IH, q), 4.67 (2H. d). 7.25 (3H. m). 7.38 (2H. m). 7.9 ( I H. s), 8.0 (I H. broad s) and 8.7 ( I H, s). [0107] Preparation of starting material .V-[(3-Chloro-5-trifluoromethyl-2-pyridyl)methvn-2-bromopropionamide To a mixture of (3-chloro-5-trifiuoromethyl-2-pyridyl)methylamine hydrochloride ( 1.0 g) in tetrahydrofuran (5 ml) and triethylamine (0.41 g) which had been stirred at room temperature for 30 minutes, was added a mixture of 2-bromopropionic acid (0.62 g) and carbonyldiimidazole (0.65 g) in tetrahydrofuran (5 ml) which had also been stirred at room temperature for 30 minutes. The combined mixture was stirred at room temperature for 12 hours and then the solvent was removed The residue was partitioned between diethv 1 ether and water and the lavers separated The organic phase was dried (MgSOa and the solvent removed to give the title product 101081 Example 12 3-(3-Chloro-5-tnfluoromethyl-2-pyrιdyl)meth lamιno)- l -phenylbut-2-enone (Compound 610) To a suspension of (3-chloro-5-tπfluoromethv l-2-pyπdyl)methylamιne hydrochloride (2 5 g) in drv tetrahydrofuran (20 ml) was added anhydrous sodium acetate ( 1 64 g) and benzovl acetone ( 1 62g) The suspension was stirred at 20°C for 18 hours, then heated at 50°C for 4 hours The mixture was ev aporated and the residue partitioned between ethyl acetate and water The organic extracts were dried (MgSθ4), filtered and evaporated to give a solid The solid was triturated with diethv l ether, filtered and washed with diethyl ether to give the title product, m p 123-5°C [01091 Example 13 3-(3-Chloro-5-trιfluoromethyl-2-pyndyl)methylamιno)-l -(2.6-dιchlorophenyl)- propenone (Compound 612) The title compound was prepared in analogous fashion to Example 4 replacing benzov l acetone with l -(2.6-dιchlorophenvl)-3-hv droxypropenone (see below) Purification was performed by silica gel chromatography eluting with 2% trieth lamine in diethyl ether/light petroleum (b p 40-60°C) ( 1 1 ) to give a mixture of E and Z isomers. ' H N M R δ(ppm) 4 54 (2H. m. py-CH?). 4 76 (2H. m. py- CH 2 ), 5 24 (1 H, m, HNCH=CH). 5 60 ( 1 H. m. HNCH=CH). 6 72 ( 1 H. broad s. NH), 7 02-7 35 (8H. m. 2xHNCH=CH-. 6xAr-H). 7 42 ( I H. broad s. NH) 7 96 (2H. d 2xpy-H) 8 7 (I H. s. py-H). 8 86 ( I H. s, pv -H) and 10 5 (4H. broad s. 2xN "* Η 2 Cl) [01101 Preparation ot starting materials 1 -(2.6-Dιchlorophenv l)-3-dιmethv laminopropenone To a solution of 2.6-dιchloroacetophenone (2 g) in drv dimethvlformamide dimethyl acetal ( 10 ml) was added pyπdmium 4-toluene sulfonate ( 0 2 g) The mixture was stirred under nitrogen and heated to reflux for 90 minutes An azeotrope of dimethvlformamide dimethylacetal/methanol was distilled under nitrogen to complete loss of 2 6-dιchloroacetophenone by thin layer chromatographv The cold mixture was evaporated to give a solid The solid was triturated with 10% diethv l ether in light petroleum (b p 40-60°C) filtered and washed with the same to give the title compound, m p 98- 100°C [0111 ] 1 -(2.6-Dιchlorophenyl)-3-hvdroxy propenone To a solution of the product from stage a) ( 1 2 g) in acetone (20 ml) and water (2 ml) was added drv Amberlv st 15 resin (2 g) and the mixture w as refluxed w ith stirring under nitrogen for 18 hours The solution was vacuum filtered and the filtrate evaporated The residue was dissolved in diethyl ether (50 ml) and dried (MgSθ4) The filtrate was presorbed onto silica gel (10 g) and purified by silica gel chromatography gradient eluting with 20 to 30% diethyl ether in light petroleum (b p 40-60°C) to give the title compound [01121 Example 14 (9-Fluorenylmethyl) Y-[(3-Chloro- ; '-tπfluoromethyl-2-pyrιdyl)methv llcarbamate (Compound 601 ) A mixture of the starting material (see below) ( 1 97 g). dioxane (40 ml), water (20 ml) and concentrated hv drochlonc acid ( 10 ml) was refluxed for 48 hours On cooling, diethyl ether ( 100 ml) was added and the layers separated The organic layer was washed with water (50 ml), dried (MgSθ4) and the solvent removed to give a solid which was recrv stalhsed from toluene, m p 159-61 °C [0113] Preparation of starting material ethoxy carbonv lmethyl]carbamate To a mixture of 3-chloro-5-tnfiuoromethv l-2-pyrιdv l-α-ethoxv carbonv lmethv l ammonium chloride ( 1 91 g) in dichioromethane (25 ml) and triethv lamine (0 85 ml). was added V-(9-fluoren lmethoxv carbonvloxv)succιnιmιde (2 02 g) and the mixture was stirred at room temperature for 90 minutes Water ( 15 ml) was then added and the layers separated The aqueous phase was extracted with dichioromethane and the combined organic lav ers were dried (MgSOzj.) and the solvent removed The residue was purified by silica gel chromatography gradient eluting w ith diethv 1 ether/light petroleum (b p 40-60°C) to giv e the title compound [0114] The following compounds of formula Ir ( see Table E). 1 e compounds of general formula I where Y is of formula (E) and A ' IS 3-Cl-5-CF3-2-pyndvl and R' IS hydrogen, may be prepared by methods analogous to the above Examples (Ir) Table E Compound 603 Η N.M.R. (CDC1 3 ) δ(ppm) 4.4 (2H. s).4.7 (2H. s).7.2-7.4 (5H. m).7.9 (IH. s) and 8.65 (lH.s): Compound 626 1 H N.M.R. (CDCI3) ό(ppm) 1.55 (3H. d).4.75 (3H. m).6.8 (2H. d).7.2 (2H. d).7.7 (IH. br.s).7.85 ( IH. s) and 8.6 (IH. s); Compound 628 Η N.M.R. (CDCI3) δ(ppm) 1.55 (3H. d).2.3 (3H. s).4.75 (3H. m).6.65 (TH. m). 6.8 (IH. s).7.2 (IH. m).7.7 (IH. br.s).7.85 (IH. s) and 8.6 (IH. s); Compound 637 Η N.M.R. (CDCI3) δ(ppm) 1.65 (3H. d).4.6 (2H. d).4.65 (IH. q).7.25-7.45 (3H. m), 7.75 (IH. s).7.8 (IH. s), 7.9 (IH. d) and 8.3 (IH. br.s); Compound 638 Η N.M.R. (CDCI3) δ(ppm) 1.55 (3H. d).2.4 (3H, s), 4.3 (IH, q), 4.7 (2H. q), 7.3- 7.5 (5H. m), 7.8 (IH. s), 8.15 (IH. s) and 8.4 (IH, br.s); Compound 639 Η N.M.R. (CDCI3) δ(ppm) 1.6 (3H. d).2.6 (3H. s).4.6 (IH. q).4.65 (2H.s).7.85 (IH. s).8.1 (IH. br.s) and 8.65 (IH); Compound 640 'HN.M.R. (CDCI3) δ(ppm) 1.15-2.0 (13H. m).4.0-4.1 (IH. m).4.6 (2H. s).7.8 (IH. s), 8.0 (IH. br.s) and 8.6 (IH, s); Compound 641 'HN.M.R. (CDCI3) δ(ppm) 1.25 (3H. s).1.35 (3H, s).1.5 (3H. d).4.45 (IH. q).4.75 (2H, qd).5.05 (2H. d).7.85 (IH. s), 8.15 (IH. br.s) and 8.6 (IH. s); Compound 644 Η N.M.R. (CDCI3) δ(ppm) 1.6 (3H. d), 4.5-4.75 (3H. m).7.0 (IH. t).7.1 (IH. m). 7.4 (IH. m).7.8 (IH. s).8.4 (IH. d).8.55 (IH. s) and 8.7 (IH. br.s): Compound 649 Η N.M.R. (CDCI3) δ(ppm) 1.5 (3H. d). 3.5 (3H. s). 4.15 (I H. q). 4.6 (2H. qd). 6.S (IH. s), 7.0 (I H. s). 7.8 (I H. s). 8.65 (I H. s) and 8.75 (I H. br.s): and Compound 652 Η N.M.R. (CDCI3) δ(ppm) 1.6 (3H. d). 2.65 (3H. s). 4.65 (3H. m i. 7.8 (I H. m), 8.15 (IH. br.s) and 8.6 ( IH. s). [0115] The following compounds of formula Is (see Table F). i.e. compounds of general formula I where Y is a formula (E) and A' is 3-Cl-5-CF3-2-pyridyl. R' is hydrogen and L' is -NHC(=0)CH(R 8 )N(R 9 )-. may be prepared by methods analogous to the above Examples. (Is) Table F Compound 801 m.p 148°C and Compound 802 m.p 185°C [0116] Test Example Compounds were assessed for activity against one or more of the following. Phytophthora infestans: late tomato blight Plasmopara viticola- vine downy mildew Erysiphe grammisf sp triticv. wheat powdery mildew Pyricularia oryzae: rice blast Leptosphaeria nodorum- glume blotch [0117] Aqueous solutions or dispersions of the compounds at the desired concentration, including a wetting agent, were applied by spray or by drenching the stem base of the test plants, as appropriate After a given time, plants or plant parts were inoculated with appropriate test pathogens before or after application of the compounds as appropriate, and kept under controlled environmental conditions suitable for maintaining plant growth and development of the disease. After an appropriate time, the degree of infection of the affected part of the plant was visuallv estimated Compounds are assessed on a score of 1 to 3 where 1 is little or no control. 2 is moderate control and 3 is good to total control At a concentration of 500 ppm (w/v) or less, the following compounds scored 2 or more against the fungi specified. Phvtophihora infestans 31 and 105-7 Plasmopara viticola: 50. 55. 104. 105. 201. 21 " $. 221. 222. 224. 225. 227. 230. 232. 233. 234. 235. 328 and 606. Ervswhe zrammis f w tritici: 4. 25, 26. 39. 40. 44. 101. 201. 214. 304. 305. 306. 308. 310, 312, 313. 603. 606 and 642. Pyricularia orvzae: 1 1 1 , 1 12. 306. 312. 606. 624. 645. 650 and 701. Levto vhaeria nodorum: 13. 105. 107. 108. 201. 229. 232. 238. 317. 336 and 626.

Claims: CLAIMS 1. The use of a compound of general formula I. complexes and salts thereof as phytopathogenic fungicides (I) where A' is 2-pyridyl or its N-oxide. each of which may be substituted by up to four groups at least one of which is haloalkyl; Y is a formula (D) or (E): -L-A 2 - -L ' -A 3 - (D) (E) A 2 is heterocyclyl or carbocyclyl. each of which may be substituted: A- 5 is heterocyclyl or carbocyclyl. each of which may be substituted, or acyl: L is a 3-atom linker, selected from the list: -Ν(R 5 )C(=X)Ν(R 6 )-. -N(R 5 )C(=X)CH(R 3 )-, -CH(R 3 )N(R 5 )CH(R 4 )-. -CH(R 3 )N(R 5 )C(=X)-. -N(R 3 )CH(R 4 )C(=X)- and -0-N(R 5 )C(=X)-; wherein A 1 is attached to the left hand side of linker L: L ' is a 4-atom linker selected from the list: -N(R 9 )C(=X)-X ' -CH(R 7 )-. -N(R 9 )C(=X)CH(R 7 )CH(R 8 )-. -N(R 9 )C(=X)C(R 7 )=C(R 8 )-. -N(R 9 )C(R 7 )=C(R 8 )-C(=X)-. -N(R 9 )C(R 7 )=C(R 8 )-SO?-. -N(R 9 )C(=X)C(R 7 )(R 8 )-SO?- and -N(R 9 )C(=X)C(R 7 )(R 8 )-X ' -: wherein A 1 is attached to the left hand side of linker L ' ; R' , R2. R 3 , R 4 . R 7 and R 8 . which may be the same or different, are R^. cyano. nitro. halogen. -OR D . -SR° or optionally substituted amino. R^ and R^ which may be the same or different, are R°. cyano or nitro. or any R' . R J or R 3 group, together with the interconnecting atoms, can form a 3-. 5 4-. 5- or 6-membered ring with anv R 2 . R 4 or R 6 or any R' . R 2 . R 3 . R 4 . R 5 or R 6 group, together with the interconnecting atoms can form a 5- or 6-membered ring with A 2 . or R' and R 2 . or R 7 and R 8 . together with the interconnecting atoms, may form a 3-. 4-, 5- or 6-membered ring, which may be substituted. w R° is alkyl. alkenyl. alkynyl. carbocyclyl or heterocycly l. each of which may be substituted, or hydrogen or acyl. X is oxygen or sulfur; X' is oxygen, sulfur or-N(R 9 )-. and R 9 is R^. cyano or nitro. or R 9 and A 3 . R' , R 2 , R 7 or R 8 , together with the is interconnecting atoms, may form a 3-, 4-, 5- or 6-membered ring, which may be substituted. 2. A method of combating fungal pests at a locus infested or liable to be infested therewith, which comprises applying to the locus a compound as defined in claim 1. 20 or a complex or salt thereof. 3. A method of combating phytopathogemc fungi at a locus infested or liable to be infested therewith, which comprises applying to the locus a compound as defined in claim 1. or a complex or salt thereof. 25 4. A method according to claim 2 or 3 in which the said compound is applied at an application rate of from 5 to 1000 g per hectare. 5. A pesticidal composition comprising at least one compound as defined in claim 1 , or a complex or salt thereof, in admixture with an agriculturally acceptable diluent or carrier 6. A. fungicidal composition comprising at least one compound as defined in claim 1. or a complex or salt thereof, in admixture with an agriculturally acceptable diluent or earner 7. A compound of formula I as defined in claim 1 or a complex or salt thereof in which one or more of the following features are present a) A 2 is optionally substituted pheny l. optionally substituted heterocyclvl. optionally substituted cy clohexvl or optionally substituted cyclopropyl, or b) A 3 is optionally substituted pheny l, optionally substituted heterocyclyl or acyl, or c) R' , R 2 , R 3 , R 4 , R 7 and R 8 are hydrogen, optionally substituted alkyl, optionally substituted phenyl, cyano, acyl or halogen (more preferably R' and R 2 are hydrogen), or d) R^ and R" are hydrogen, optionally substituted alkyl or acyl, or e) R 7 and R 8 are hydrogen, optionally substituted alkyl or acyl, or f) R 9 is hydrogen or optionally substituted alkyl, or g) the 2-pyπdyl group (A' ) IS substituted by alkoxy, alkyl. cyano. halogen, nitro, alkoxycarbonyl. alkylsulfmyl. alkylsulfonyl or trifluoromethyl, (preferably chlorine or trifluoromethyl) 8. A compound of formula I as defined in claim 1 or a complex or salt thereof in which l) L is -NHC(=X)NH-. and A 2 is phenyl optionally substituted by halogen, haloalkyl, phenoxy. alkoxy, alkyl. CN. N0 2 , SO?-(N-tetrahydropyridinyl). alkylthio. acyl, phenylsulphonyl. dialkylamino. alkylsulphonyl. benzylsulphonyl. S(phenyl substituted by halogen); or A- is cycloalkyl; or naphthyl optionally substituted by NO?; or ii ) L is -NHC(=0)CH(R 3 )-: R J is hydrogen, alkyl. phenyl. halogen or acyloxy: A 2 is phenyl optionally substituted by halogen. NO? or alkoxy; or thienyl; or imidazolvl: or pyrrolinyl substituted by alkoxy; or iii) L is -CH(R 3 )N(R 5 )CH?-; R J is N-alkylcarbamoyl or alkoxycarbonyl: R^ is hydrogen or acyl; A 2 is phenyl optionally substituted by alkyl. alkoxy, halogen. NO?, haloalkyl or phenoxy; or is naphthyl; or iv) L is -CH(R 3 )NHC(=0)-; R J is N-alkylcarbamoyl or alkoxycarbonyl; A 2 is phenyl optionally substituted by alkoxy. halogen, NO?, haloalkyl. phenoxy or phenyl: or is cycloalkyl; or v) L is -O-NHC(=O)- and A 2 is phenyl substituted by alkyl; or Y is -L ' -A J - and: a) L ' is -NHC(=0)(CH?) 2 -. and A 3 is phenyl substituted by alkyl; or b) L ' is -NHC(=S)NHCH 2 -. and A 3 is phenyl; or c ) L ' is -NHC(=0)CH(alkyl)S-. and A 3 is phenykor d) L ' is -NHC(=0)OCH?-. -NHC(=0)(CH 2 ) 2 -. -NHC(=0)NHCH?-. -NHC(=S)NHCH?-. -N(alkyl)C(=0)CH?0- or -NHC(=0)CH?0-; R' is hydrogen; R is hvdrogen or alkoxvcarbonvl; A 3 is phenyl optionally substituted by halogen, alkyl, phenyl, OH. alkoxy or alkoxycarbonyl; or fluorenyl; or pyridyl optionally substituted by halogen or haloalkyl; or thiadiazolyl substituted by alkyl; or benzthiazolyl optionally substituted by halogen or by phenyl substituted by halogen; or quinolinyl substituted by haloalkyl; or triazolyl substituted by alkyl or phenyl; or tetrazolyl substituted by alkyl or cycloalkyl: or pyrimidinyl substituted by alkyl; or benzoxazolyl; or imidazolvl substituted by alkyl: or thiazolinyl substituted by alkyl and methylene; or e) L' is -NHC(=0)CH(R 8 )N(R 9 )-; R' is hydrogen; R 2 is hydrogen or alkyl; R 8 and R 9 are each hydrogen or alkyl; A 3 is benzoyl optionally substituted by alkyl: or benzyloxycarbonyl; or alkoxycarbonyl; or f L 1 is -NHC(=0)CH(alkyl)S0 -; R' and R 2 are each hydrogen; A 3 is phenyl; or g) L 1 is -NHC(=0)CH?X ' -; where X ' and A 3 form a 2-oxo-N-benzthiazolyl ring which is substituted by halogen: and R' and R- are each hydrogen.

Inventors: BRIGGS GEOFFREY GOWER, COOKE TRACEY, HARDY DAVID, MOLONEY BRIAN, STEELE CHRIS RICHARD, THOMAS PETER STANLEY, BRIGGS, GEOFFREY, GOWER, COOKE, TRACEY, HARDY, DAVID, MOLONEY, BRIAN, STEELE, CHRIS, RICHARD, THOMAS, PETER, STANLEY
Applicants: AVENTIS CROPSCIENCE GMBH, BRIGGS GEOFFREY GOWER, COOKE TRACEY, HARDY DAVID, MOLONEY BRIAN, STEELE CHRIS RICHARD, THOMAS PETER STANLEY, BRIGGS, GEOFFREY, GOWER, COOKE, TRACEY, HARDY, DAVID, MOLONEY, BRIAN, STEELE, CHRIS, RICHARD, THOMAS, PETER, STANLEY
Application year: 2000
Main classification: A01N43
IPC codes: A01N43, A01N47, C07D213, C07D401, C07D409, C07D413, C07D417, C07D521