Asymmetric 1,3-dipolar cycloaddition of chiral α,β-unsaturated-γ-sultams with nitrile oxides and nitrones

被引：13
|
作者：
Zhang, H
Chan, WH [1 ]
Lee, AWM
Xia, PF
Wong, WY
机构：
[1] Inst Mol Technol Drug Discovery & Synth, Dept Chem & Cent Lab, Kowloon, Hong Kong, Peoples R China
[2] Hong Kong Baptist Univ, Kowloon, Hong Kong, Peoples R China
来源：
LETTERS IN ORGANIC CHEMISTRY | 2004年 / 1卷 / 01期
关键词：
1,3-dipolar cycloaddition; chiral sultams; nitrite oxides; nitrones;
D O I：
10.2174/1570178043488644
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
The scope and limitations of 1,3-dipolar cycloaddition reactions between nitrite oxides and chiral alpha,beta-unsatured-gamma-sultams 2a and 2b have been investigated. Only very marginal diastereoselectivity was observed for the reaction. In contrast, using double asymmetric induction strategy, the cycloaddition products from 2a and chiral nitrones were obtained in better diastereomeric ratios (up to 7.1:1).
引用
收藏
页码：63 / 66
页数：4
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