POLYLITHIUMORGANIC COMPOUNDS .12. REDUCTIVE SCISSION OF A CYCLOPROPANE SIGMA-BOND DURING THE ACTION OF ELEMENTAL LITHIUM ON CYCLOPROPYLACETYLENES - A CIS-1,2-DILITHIOALKENE AS INTERMEDIATE

被引：14

作者：

MAERCKER, A

GIRRESER, U

机构：

[1] Institut für Organische Chemie, Universität Siegen, D-5900, Adolf-Reichwein-Strasse

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH | 1990年 / 29卷 / 06期

关键词：

D O I：

10.1002/anie.199006671

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The cis‐dilithioalkene 2 a is stable in solution at −30 °C; it is formed as intermediate during the reductive cleavage of a cyclopropane bond in 1 a leading to 3 a. In contrast, in the analogous reaction of 1 b, only the product 3b of ring‐opening can be detected, and no intermediate. R = Ph(a), cyclopropyl (b). (Figure Presented.) Copyright © 1990 by VCH Verlagsgesellschaft mbH, Germany

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页码：667 / 669

页数：3

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