Crown ether catalyzed stereospecific synthesis of Z- and E-stilbenes by Wittig reaction in a solid-liquid two-phases system

被引：49

作者：

Bellucci, G ^{[1
]}

Chiappe, C ^{[1
]}

LoMoro, G ^{[1
]}

机构：

[1] UNIV PISA,DIPARTIMENTO CHIM BIOORGAN,I-56126 PISA,ITALY

来源：

TETRAHEDRON LETTERS | 1996年 / 37卷 / 24期

关键词：

D O I：

10.1016/0040-4039(96)00802-7

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Potassium hydroxide and a catalytic amount of 18-crown-6 are used, in alternative to the classical Wittig conditions, to prepare very rapidly and stereoselectively Z- and E-stilbenes. In particular, the use of benzyltriphenylphosphonium iodides always leads to a complete Z-stereospecificity, while benzyldiphenylchlorophosphonium salts give a complete E-stereospecificity. (C) 1996 Elsevier Science Ltd

引用

页码：4225 / 4228

页数：4

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