Synthesis of enantiomerically enriched β-amino alcohol derivatives via asymmetric lithiation of O-benzyl carbamates-imine addition using (-)-sparteine complexes

被引:13
作者
Arrasate, S [1 ]
Lete, E [1 ]
Sotomayor, N [1 ]
机构
[1] Univ Basque Country, Fac Ciencias, Dept Quim Organ 2, E-48080 Bilbao, Spain
关键词
D O I
10.1016/S0957-4166(02)00078-2
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The asymmetric lithiation of O-benzyl carbamates-imine addition sequence using sec-butyllithium/(-)-sparteine complexes has been studied. The reactions proceed with high diastereoselectivity, giving the threo beta-amino alcohol derivatives with modest to good e.e. The best enantioinduction was obtained with O-benzyl carbamates bearing methoxy substituents on the aromatic ring. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:311 / 316
页数:6
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