METHYLENE PHOSPHONIUM IONS

被引：57

作者：

GRUTZMACHER, H

PRITZKOW, H

机构：

[1] Anorganisch-Chemisches Institut, Universität Heidelberg, Heidelberg, W-6900

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH | 1991年 / 30卷 / 06期

关键词：

D O I：

10.1002/anie.199107091

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Despite steric shielding of the P = C bond, the methylenephosphonium ions 1 and 2 react with 2,3-dimethylbutadiene in an ene reaction and a [2 + 4]cyclo-addition reaction, respectively, to give 3 and 4 (counterion in all cases AlCl4-). This reaction behavior is understandable from the pronounced electron-deficient character of the alkyl-substituted P atoms. Compounds 1 and 2 are formed in high yields from the corresponding P-chloro-substituted phosphorus ylides by chloride abstraction.

引用

页码：709 / 710

页数：2

共 18 条

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