Asymmetric synthesis of α-amino acids using polymer-supported Cinchona alkaloid-derived ammonium salts as chiral phase-transfer catalysts

被引：99

作者：

Chinchilla, R ^{[1
]}

Mazón, P ^{[1
]}

Nájera, C ^{[1
]}

机构：

[1] Univ Alicante, Dept Quim Organ, E-03080 Alicante, Spain

来源：

TETRAHEDRON-ASYMMETRY | 2000年 / 11卷 / 16期

关键词：

D O I：

10.1016/S0957-4166(00)00317-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Cinchonidine and cinchonine have been N-alkylated with Merrifield resin and employed as chiral phase-transfer catalysts for the enantioselective alkylation of enolates from N-(diphenylmethylene)glycine esters with activated electrophiles (up to 90% ee). The use of the polymer-supported cinchonidine ammonium salt afforded the corresponding (S)-isomers, whereas the (R)-isomers were obtained using related cinchonine-supported polymers. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：3277 / 3281

页数：5

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