Process for preparing new S - (P - chloro phenyl) - alqprocesso to prepare new S - (P - chloro phenyl alkyl - fosfonoditioatos) - alquilicos and new composicoeuil - fosfono ditioatos - alquilicos and new formAlternations pesticides based on them s pesticides based upon them

摘要

The invention comprises compounds of formula FORM:0997379/C2/1 where R and R1 are each methyl or ethyl. They are prepared by reacting a compound FORM:0997379/C2/2 where X is chlorine or bromine with p-chlorobenzenethiol, preferably in an organic solvent in the presence of a base. The products are pesticides.ALSO:Pesticidal compositions comprise organophosphorus compounds of formula FORM:0997379/A5-A6/1 where R and R1 are each methyl or ethyl. Dispersions, solutions and powders are specified.