Process for the preparation of phosphorothioic dichlorides.

摘要

The invention provides a process for the preparation of phosphorothioic dichlorides characterised by reacting a compound of the formula RCHO, wherein R is an alkyl or haloalkyl moiety, with PCl3 and sulfur monochloride in the presence of a catalytic amount of chloride ion in the liquid phase and under anhydrous conditions to produce a compound of formula RCHClOP(S)Cl2.