Production of phosphoro chloride thiolates

Abstract

A process for the production of a phosphoro chloride thiolate of the formula ##STR1## wherein R.sup.1 is alkyl, alkoxyalkyl, aryl, or aryl substituted by alkyl, alkoxy or halogen, and R.sup.2 is alkyl, comprising reacting a mixture of a dialkyl chlorophosphite of the formula (R.sup.2 O).sub.2 PCl and an alkyl dichloro-phosphite of the formula (R.sup.2 O)PCl.sub.2 with a sulphenyl chloride of the formula R.sup.1 SCl to produce a mixture of a phosphorochloridothiolate of the formula ##STR2## and a phosphorodichloridothiolate of the formula ##STR3## and reacting the mixture without isolation with an alcohol of the formula R.sup.2 OH in the presence of a dehydrochlorinating agent thereby to convert the phosphorodichloridothiolate of the formula ##STR4## to additional phosphorochloridothiolate ##STR5## The starting mixture is produced by reacting phosphorus trichloride with a trialkyl phosphite, or with an alcohol in the presence of a dehydrochlorinating agent.

Dependencies are inferred from the claim text.