Concave reagents .22. Cyclopropanation of alkenes with ethyl diazoacetate: Copper(I) complexes of concave 1,10-phenanthrolines as diastereoselective catalysts

被引：27

作者：

Hagen, M ^{[1
]}

Luning, U ^{[1
]}

机构：

[1] CHRISTIAN ALBRECHTS UNIV KIEL,INST ORGAN CHEM,D-24098 KIEL,GERMANY

来源：

CHEMISCHE BERICHTE-RECUEIL | 1997年 / 130卷 / 02期

关键词：

diastereoselective cyclopropanation; copper compounds; homogeneous catalysis; molecular recognition; bimacrocycles; alkenes; macrocyclic ligands; heterocycles;

D O I：

10.1002/cber.19971300215

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Concave 1,10-phenanthrolines 1a-c have been used as ligands in the copper(I)-catalyzed cyclopropanation of alkenes 2 with ethyl diazoacetate. The complexes proved to be efficient cyclopropanation catalysts and exhibited an enhanced diastereoselectivity, particularly in the reactions of cyclic alkenes 2b-d. the preferred formation of exo-cyclopropanes 3b-d can be explained by the concave shape of these catalysts.

引用

页码：231 / 234

页数：4

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