Dimethylenation of phosphorus tribromide. Synthesis of derivatives of di(bromomethyl)phosphinic acid

Abstract

Reaction between phosphorus tribromide and diazomethane yields bromomethylphosphonous dibromide together with 2-bromoethyl phosphorodibromidite. Di(hydroxymethyl)phosphinic acid with phosphorus pentabromide or thionyl bromide gives di(bromomethyl)phosphinic bromide. Other derivatives of di(bromomethyl)phosphinic acid have been obtained by methods previously employed for di(chloromethyl)phosphinic acid.