PROCESS FOR STABILIZING KINETICALLY CONTROLLED TRIARYL PHOSPHITEHALOGEN COMPOUNDS

摘要

There is described a process for the stabilization of compounds of the general formula …… wherein X is Cl or Br and Z is hydrogen, halo, C1-C4 alkyl or C1-C4 alkoxy, which compounds are the kinetically controlled products of the reaction of equivalent amounts of a triaryl phosphite of the formula …… and chlorine or bromine in a substantially anhydrous inert organic solvent, which comprises mixing the halogenating compounds in an inert organic solvent with a stabilizing amount of a tertiary amino base or a complexing agent selected from a Lewis acid-metal halide, phosphorous pentachloride or bromine; with the limitation that when X is Cl the complexing agent is not bromine.