COMPORTEMENT COMPARE DE L'EPICHLORHYDRINE, DE L'EPIBROMHYDRINE ET DE LEURS HOMOLOGUES VIS A VIS DU METHYLENETRIPHENYLPHOSPHORANE

Abstract

Condensation of methylenetriphenylphosphorane with epihalohydrines (X = Cl or Br) leads to 2,2-dihydro-2,2,2,-triphenyl-3,4-methano-1,2-oxaphospholane. The first step of this reaction depends on the nature of the halogene: a) attack on the epoxide group with X = Cl; b) attack on the halogenated function when X = Br. With 1-halogeno 2,3-epoxy butanes the reaction occurs according to b) and gives 2,2-dihydro-2,2,2-triphenyl-3,4-methano-5-methyl-1,2-oxaphospholane.