New polymer-supported chiral phase-transfer catalysts in the asymmetric synthesis of α-amino acids:: the role of a spacer

被引：65

作者：

Thierry, B ^{[1
]}

Plaquevent, JC ^{[1
]}

Cahard, D ^{[1
]}

机构：

[1] Univ Rouen, IRCOF, UPRESA 6014, F-76821 Mt St Aignan, France

来源：

TETRAHEDRON-ASYMMETRY | 2001年 / 12卷 / 07期

关键词：

D O I：

10.1016/S0957-4166(01)00187-2

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Polymer-supported cinchona alkaloid salts with different spacers were used as phase-transfer catalysts in the asymmetric C-alkylation of N-diphenyl methylene glycine tert-butyl ester. Various catalysts and alkylation conditions were studied, the best result being 81% e.e. with cinchoninium iodide bound to polqstyrene with a four-carbon spacer. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：983 / 986

页数：4

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