Patent GB-823415-A (GB)
Title: Preparations containing phosphorus- and halogen-containing condensation products
IPC: C07F9/40
Filed: 1956-09-11
Abstract: Condensation products of the probable general formula <FORM:0823415/IV (a)/1> (wherein R and R1 are aliphatic hydrocarbon radicals of 1 to 4 carbon atoms which may be substituted by chloro, cyano or thiocyano groups and R2 is an aryl radical which may be substituted by alkyl, alkoxy, cycloalkyl, chloro or nitro groups) are prepared by reacting a compound of the formula <FORM:0823415/IV (a)/2> with the appropriate trichloracetic acid aryl ester.  The reaction may be performed in an inert solvent.  In an example, trichloracetic acid p-chlorophenol ester is heated to 60 DEG  C. with trimethyl phosphite in benzene, and subsequently to reflux temperature, giving a product of the probable formula (I) above wherein R and R1 are methyl and R2 is p-chlorophenyl. Further compounds of probable formula (I) are also described, wherein R and R1 are variously methyl and ethyl and R2 is phenyl, o-, m- and p-chlorophenyl, o-, m- and p-cresyl and mixtures thereof, 3-methyl-4-chlorophenyl, p-nitrophenyl, p - amyl - phenyl, p - methoxy - phenyl, p - cyclo - hexyl - phenyl, alpha- and beta-naphthyl and 2 : 4-dimethyl.  Reference is also made to R and R1 being propyl, iso-propyl, butyl, allyl and 2-chloroethyl radicals and to R2 being a diphenyl radical. Specification 775,085 is referred to.ALSO:The invention comprises a pest combating preparation which contains as the active ingredient a condensation product of a phosphite of the general formula <FORM:0823415/VI/1> (wherein R and R1 are aliphatic hydrocarbon radicals of 1 to 4 carbon atoms which may be substituted by chloro, cyano or thiocyano groups) with an ester of the formula <FORM:0823415/VI/2> (wherein R2 is an aryl radical which may be substituted by alkyl, alkoxy, cycloalkyl, chloro or nitro groups) in admixture with a solid powdered diluent or a liquid diluent and an emulsifying or wetting agent.  The condensation products have the probable formula <FORM:0823415/VI/3> Suitable liquid diluents are lower alkanols, acetone, methyl ethyl ketone, methyl cyclohexanol, benzene, toluene, kerosene, white spirit, petroleum and tar distillates and suitable solid diluents are kaolin, gypsum and bentonite and further additives such as sulphite cellulose waste liquor and cellulose derivatives. Suitable emulsifying agents are condensation products from aliphatic alcohols or amines or carboxylic acids which contain a long-chain hydrocarbon radical, e.g. octadecyl alcohol, soya oil fatty acid, oleylamine or dodecyl mercaptan, with ethylene oxide, the sodium salt of lauryl sulphonic acid or of dodecyl benzene sulphonic acid, the sodium or triethanolamine salt of oleic or abietic acid or mixtures of these, the sodium salt of petroleum sulphonic acid and dodecyl pyridinium chloride.  Other insecticides and/or fungicides may also be added to the preparations which may take the form of powders, aqueous dispersions, pastes or self-dispersing oils.  Examples describe the following compositions: (1) the condensation product of p-chlorophenyl trichloracetate and trimethyl phosphite, octylphenol polyglycol ether, oleic acid and mineral oil; (2) the condensation product of (1), the condensation product of dodecyl mercaptan and ethylene oxide and iso-propanol; (3) the condensation product of (1) and petroleum sulphonic acid sodium salt; (4) the condensation product from triethyl phosphite and trichloroacetic acid p-cresol ester and talcum or bentonite, kaolin or mixtures thereof; (5) the condensation product from trimethyl phosphite and trichloracetic acid p-cresol ester, sulphur and copper oxychloride.  Specification 775,085 is referred to.