Production of alkylsulfinyl substituted organophosphoric...

Details Production of alkylsulfinyl substituted organophosphoric... Production of alkylsulfinyl substituted organophosphoric...

C - Chemistry, Metallurgy

07

F

260/459.3, 260/4

C07F 9/145 (2006.01) C07F 9/12 (2006.01) C07F 9/18 (2006.01)

Patent

CA 1180019

23189-5323 ABSTRACT OF THE DISCLOSURE A process for preparing an alkylsulfinyl-substituted phenylphosphoric acid ester of the formula Image in which R1 and R2 each independently is alkyl, haloalkyl, alkenyl or optionally substituted aryl, R3 is alkyl, R4 is hydrogen, halogen, alkyl, alkoxy, nitro, cyano, alkoxycarbonyl group, phenyl or phenoxy, and X and Y each independently is oxygen or sulphur, which comprises reacting hydrogen peroxide with an alkylmercapto-substituted phenylphosphoric acid ester of the formula Image in an aprotic solvent under sulfuric acid-induced acidic conditions in the presence of an organic carboxylic acid. the product is obtained in higher purity and yield.

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