Nickel(II)-catalyzed Michael additions.: Formation of quaternary centers and diastereoselective addition of enantiopure N-acetoacetyl-4-benzyloxazolidin-2-one

被引:53
作者
Clariana, J
Gálvez, N
Marchi, C
Mañas, MM [1 ]
Vallribera, A
Molins, E
机构
[1] Univ Autonoma Barcelona, Dept Chem, E-08193 Barcelona, Spain
[2] CSIC, Inst Ciencia Mat Barcelona, E-08193 Cerdanyola, Spain
关键词
nickel catalysis; conjugate addition; quaternary centers; chiral induction; amides of malonic acid;
D O I
10.1016/S0040-4020(99)00358-0
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Ni(acac)(2) and Ni(salicylaldehydate)(2) are effective catalysts for conjugate additions of 2-methyl-1,3-dicarbonyl compounds to Michael accepters, Significant diastereomeric excesses are obtained in the Michael additions of enantiopure N-acetoacetyl-4-benzyloxazolidinones. Reaction of the latter compound with aryl isocyanates affords unsymmetrical diamides of malonic acid, (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:7331 / 7344
页数:14
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