Preparation and Reactivity of Chalcogenyl Phosphonates and Phosphane Oxides

Abstract

Abstract The preparation of new bis[(diphenylphosphinoyl)methyl] sulfides, selenides, and tellurides is described by the reaction of (diphenylphosphinoyl)methyl p ‐toluenesulfonate with sodium chalcogenides. The title compounds are subjected to Horner–Wittig‐type reactions with aldehydes and ketones to give symmetrical divinylic sulfides, selenides, and tellurides with preferential ( E ) stereochemistry. Unsymmetrical divinylic sulfides can be prepared by the use of an appropriate carbonyl compound.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)