Catalytic, asymmetric Mannich-type reactions of α-imino esters bearing readily removable substituents on nitrogen

被引：48

作者：

Nakamura, Y ^{[1
]}

Matsubara, R ^{[1
]}

Kiyohara, H ^{[1
]}

Kobayashi, S ^{[1
]}

机构：

[1] Univ Tokyo, Grad Sch Pharmaceut Sci, Bunkyo Ku, Tokyo 1130033, Japan

来源：

ORGANIC LETTERS | 2003年 / 5卷 / 14期

关键词：

D O I：

10.1021/ol034717d

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

[GRAPHICS] Catalytic, enantioselective Mannich-type reactions of alpha-imino esters bearing readily removable substituents on nitrogen are described. Several N-carbamate-protected alpha-imino esters, which are readily prepared from 2-bromoglycine esters using a polymer-supported amine, reacted with silicon enolates to afford the desired adducts in high yields with high enantioselectivity using a copper(II)-diamine complex. Easy deprotection of the product amine and transformation to free a-amino acid derivatives have also been demonstrated.

引用

页码：2481 / 2484

页数：4

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