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A highly enantioselective Friedel-Crafts reaction of 3,5-dimethoxylphenol with nitroolefins mediated by a bifunctional quinine derived thiourea catalyst
被引:15
|作者:
Han, Xiaoyu
[1
]
Ye, Can
[1
]
Chen, Fenfen
[1
]
Chen, Qu
[1
]
Wang, Yongjiang
[1
]
Zeng, Xiaofei
[2
]
机构:
[1] Zhejiang Univ Sci & Technol, Sch Biol & Chem Engn, Zhejiang Prov Key Lab Chem & Biol Proc Technol Fa, Sch Light Ind, Hangzhou 310023, Zhejiang, Peoples R China
[2] Hangzhou Normal Univ, Coll Mat Chem & Chem Engn, Hangzhou 310036, Zhejiang, Peoples R China
基金:
中国国家自然科学基金;
关键词:
MODIFIED CINCHONA ALKALOIDS;
DIRECT CONJUGATE ADDITION;
CHIRAL PHOSPHORIC-ACID;
NITRO-MICHAEL ADDITION;
C BOND FORMATION;
ASYMMETRIC CATALYSIS;
ALKYLATION REACTIONS;
ACTIVATED ALKENES;
BETA-KETOESTER;
BRONSTED ACID;
D O I:
10.1039/c7ob00372b
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
A useful enantioselective Friedel-Crafts reaction of 3,5-dimethoxylphenol with nitroolefins catalyzed by a bifunctional quinine derived thiourea catalyst 9 was developed. The Michael addition products could be obtained in good to high yields (68-92%) and with excellent enantioselectivities (89-98% ee). Such a reaction is exceptionally attractive in virtue of its simple protocol, ready availability of the starting materials, and practical applications of the products.
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页码:3401 / 3407
页数:7
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