Highly enantio- and diastereoselective tandem generation of cyclopropyl alcohols with up to four contiguous stereocenters

被引:76
|
作者
Kim, HY [1 ]
Lurain, AE [1 ]
García-García, P [1 ]
Carroll, PJ [1 ]
Walsh, PJ [1 ]
机构
[1] Univ Penn, Dept Chem, P Roy & Diana T Vagelos Labs, Philadelphia, PA 19104 USA
关键词
D O I
10.1021/ja0539239
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Three highly enantio- and diastereoselective one-pot procedures for the synthesis of cyclopropyl and iodocyclopropyl alcohols with up to four contiguous stereocenters are reported. Route 1 involves asymmetric addition of an alkylzinc reagent to an enal followed by diastereoselective cyclopropanation. Route 2 parallels route 1, except that iodoform is used to generate the zinc carbenoid, and the products are iodocyclopropyl alcohols. Route 3 entails asymmetric vinylation of an aldehyde with divinylzinc reagents and subsequent diastereoselective cyclopropanation. Copyright © 2005 American Chemical Society.
引用
收藏
页码:13138 / 13139
页数:2
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