Tetrahedron letters

A practical synthesis of chiral and achiral phosphonium salts from phosphine borane complexes

J Uziel, N Riegel, B Aka, P Figuière, S Jugé

Index: Uziel, Jacques; Riegel, Nadege; Aka, Benoit; Figuiere, Pierre; Juge, Sylvain Tetrahedron Letters, 1997 , vol. 38, # 19 p. 3405 - 3408

Full Text: HTML

Citation Number: 34

Abstract

Phosphine borane complexes are transformed under mild conditions, in presence of an olefin, into quaternary phosphonium salts by reaction with an alkyl (or aryl) halide. In the case of the reaction of (R)-PAMP. BH31e with benzyl bromide, the enantiomerically pure phosphonium salt 3h is obtained.