Enhanced asymmetric induction in cycloadditions to bridgehead-chiral vinyl dioxazaborocines

被引:37
作者
Davies, CD
Marsden, SP [1 ]
Stokes, ESE
机构
[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AY, England
[2] AstraZeneca, Macclesfield SK10 4TG, Cheshire, England
基金
英国工程与自然科学研究理事会;
关键词
asymmetric synthesis; boron and compounds; cycloaddition; isoxazolines; nitrile oxides; nitrones;
D O I
10.1016/S0040-4039(00)00571-2
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Vinyl dioxazaborocines 5 with asymmetric centres on the nitrogen bridgehead substituent have been prepared and assayed in nitrile oxide and nitrone cycloadditions, giving asymmetric inductions of up to 70 and 74% ee, respectively. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:4229 / 4233
页数:5
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