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Catalytic enantioselective conjugate additions with α,β-unsaturated sulfones
被引:51
|作者:
Li, Hongming
[1
]
Song, Jun
[1
]
Deng, Li
[1
]
机构:
[1] Brandeis Univ, Dept Chem, Waltham, MA 02454 USA
来源:
关键词:
Organocatalyst;
Hydrogen bonding;
Cinchona alkaloids;
Chiral sulfones;
Conjugate addition;
ASYMMETRIC MICHAEL ADDITION;
QUATERNARY STEREOCENTERS;
CINCHONA ALKALOIDS;
VINYL SULFONES;
CONSTRUCTION;
ALDEHYDES;
ALPHA;
ACIDS;
REDUCTION;
REAGENTS;
D O I:
10.1016/j.tet.2008.11.054
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
We describe the development of a highly efficient catalytic asymmetric conjugate addition alpha,beta-unsaturated sulfones. Utilizing practical bifunctional organic catalysts and involving air- and moisture-tolerant conditions, conjugate additions of a wide range of Michael donors to alpha,beta-unsaturated sulfones proceeded in excellent enatioselectivity/diastereoselectivity and high yield. This efficient and operationally simple new catalytic asymmetric reaction should provide a versatile approach for the asymmetric synthesis of chiral sulfones bearing all-carbon quaternary stereocenters. (C) 2008 Elsevier Ltd. All rights reserved.
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页码:3139 / 3148
页数:10
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