REACTIONS OF PHOSPHINES WITH ACETYLENES .18. MECHANISM OF FORMATION OF 1,2-ALKYLIDENEDIPHOSPHORANES

被引：63

作者：

TEBBY, JC ^{[1
]}

WILSON, IF ^{[1
]}

GRIFFITHS, DV ^{[1
]}

机构：

[1] UNIV KEELE,DEPT CHEM,KEELE ST5 5BG,STAFFORDSHIRE,ENGLAND

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1 | 1979年 / 09期

关键词：

D O I：

10.1039/p19790002133

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The reactions of dimethyl acetylenedicarboxylate and dibenzoylacetylene with a variety of tertiary arylphosphines, in excess, have been studied. Evidence is presented to show that 1,2-alkylidenediphosphoranes are formed via zwitterionic intermediates which have the character of nucleophilic carbenes. 1,2- Bismethoxycarbonyl-2-thioxoethylidenetriphenylphosphorane and 1,2-dibenzoyl-2-thioxoethylidenetriphenylphosphorane have been isolated by trapping the intermediate with sulphur.

引用

页码：2133 / 2135

页数：3

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