Asymmetric multicomponent domino reactions and highly enantioselective conjugated addition of thiols to α,β-unsaturated aldehydes

被引:393
作者
Marigo, M [1 ]
Schulte, T [1 ]
Franzén, J [1 ]
Jorgensen, KA [1 ]
机构
[1] Aarhus Univ, Danish Natl Res Fdn, Ctr Catalysis, Dept Chem, DK-8000 Aarhus, Denmark
关键词
D O I
10.1021/ja055291w
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
An organocatalytic asymmetric multicomponent domino and a conjugated addition reaction to α,β-unsaturated aldehydes are presented. The development is based, first, on an organocatalyzed highly enantioselective nucleophilic thiol addition to the β-carbon atom in the iminium ion intermediate, followed by an electrophilic amination of the α-carbon atom to the enamine intermediate. The multicomponent reactions proceed to give enantiopure amino-thiols in moderate to good yields. Furthermore, the organocatalyzed thiol addition to α,β-unsaturated aldehydes takes place in good yields and excellent enantioselectivities. Copyright © 2005 American Chemical Society.
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页码:15710 / 15711
页数:2
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