Co(II)-salen-catalyzed highly cis- and enantioselective cyclopropanation

被引：103

作者：

Niimi, T ^{[1
]}

Uchida, T ^{[1
]}

Irie, R ^{[1
]}

Katsuki, T ^{[1
]}

机构：

[1] Kyushu Univ, Grad Sch Sci, Dept Mol Chem, Higashi Ku, Fukuoka 8128581, Japan

来源：

TETRAHEDRON LETTERS | 2000年 / 41卷 / 19期

关键词：

chiral Co(II)-salen complex; asymmetric cyclopropanation; cis- and enantioselectivity;

D O I：

10.1016/S0040-4039(00)00433-0

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The reactions of styrene derivatives and t-butyl alpha-diazoacetate using (R,R)-(salen)cobalt(II) complex 6 as a catalyst in the presence of N-methylimidazole gave the corresponding cyclopropanecarboxylates with excellent enantio- (>95% ee) and high cis-stereoselectivity (98%) as well as good chemical yields. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：3647 / 3651

页数：5

共 31 条

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