ChemSusChem

A Versatile Protocol for the Quantitative and Smooth Conversion of Phosphane Oxides into Synthetically Useful Pyrazolylphosphonium Salts

KO Feldmann, S Schulz, F Klotter…

Index: Feldmann, Kai-Oliver; Schulz, Stephen; Klotter, Felix; Weigand, Jan J. ChemSusChem, 2011 , vol. 4, # 12 p. 1805 - 1812

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Citation Number: 13

Abstract

Abstract A convenient protocol for the smooth conversion of the resistant P [BOND] O bond in phosphane oxides into a reactive P [BOND] N bond of synthetically useful pyrazolylphosphonium salts is described. A highly charged, oxophilic, phosphorus-centered trication is employed and the reactions are conducted at room temperature with quantitative yields. The resulting pyrazolylphosphonium cations are valuable synthetic intermediates ...

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