Intermolecular hydrophosphination of alkynes and related carbon carbon multiple bonds catalyzed by ytterbium–imine complexes

…, M Takeda, G Koshoji, T Shishido, K Takehira

Index: Takaki, Ken; Takeda, Mitsuhiro; Koshoji, Go; Shishido, Tetsuya; Takehira, Katsuomi Tetrahedron Letters, 2001 , vol. 42, # 36 p. 6357 - 6360

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Citation Number: 69

Abstract

Catalytic intermolecular hydrophosphination of alkynes with Ph2PH has been achieved by using a ytterbium–imine complex,[Yb (η2-Ph2CNPh)(hmpa) 6]. Thus, both terminal and internal alkynes were converted in high yields to the corresponding alkenylphosphines or phosphine oxides after oxidative workup. The present method was also applicable to various carbon carbon multiple bonds such as conjugated diynes and dienes, allenes ...