Synthesis and structure of aryl-substituted phospha-alkenes

TA Van der Knaap, TC Klebach, F Visser, F Bickelhaupt…

Index: Knaap, Th.A. van der; Klebach, Th.C.; Visser, F.; Bickelhaupt, F.; Ros, P.; et al. Tetrahedron, 1984 , vol. 40, # 4 p. 765 - 776

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Citation Number: 73

Abstract

An improved synthesis of the two triarylsubstituted phospha-alkenes mesityl (diphenylmethylene) phosphine (la) and 2, 6dimethylphenyl (diphenylmethylene) phosphine (lb) is described. Of several variants, the preferred route starts with the aryl bromides 4 which are converted to the corresponding Grignard reagents and to the arylphosphonous diamides 7 which with PCl3, yield arylphosphonous amide chlorides 9 thence phosphinous amides ...