A reinvestigation of the reaction between 2-methoxy-5,5-dimethyl-1,3,2-dioxaphosphorinan-2-one and 2-chloro-5,5-dimethyl-1,3,2-dioxaphosphorinan-2-one

Abstract

The title compounds together give pyrophosphate and methyl chloride probably via a cycle of reactions involving cyclic phosphate diester and hydrogen chloride as slower as carriers; rapid formation of dioxadiphosphetanes from intermediate five-co-ordinate phosphoranes and a slower intermolecular scrambling account for the distributions of ¹⁸O observed starting with various patterns of ¹⁸O labelling.