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N-Heterocyclic Carbene-Catalyzed [3+4] Annulation of Enals and Alkenyl Thiazolones: Enantioselective Synthesis of Thiazole-Fused ε-Lactones
被引:53
|作者:
Liang, Zhi-Qin
[1
]
Yi, Liang
[1
]
Chen, Kun-Quan
[1
]
Ye, Song
[1
]
机构:
[1] Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, CAS Key Lab Mol Recognit & Funct, Beijing 100190, Peoples R China
来源:
基金:
美国国家科学基金会;
关键词:
BOND-FORMING REACTIONS;
DIELS-ALDER REACTIONS;
ALPHA;
BETA-UNSATURATED ALDEHYDES;
COOPERATIVE CATALYSIS;
BENZOIN CONDENSATION;
GAMMA-BUTYROLACTONES;
BETA-HYDROXYLATION;
STETTER REACTIONS;
4+2 CYCLOADDITION;
MICHAEL ADDITION;
D O I:
10.1021/acs.joc.6b00313
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
The bifunctional N-heterocyclic carbene catalyzed [3 + 4] annulation of enals and 5-alkenyl thiazolones was developed, giving, the corresponding thiazole-fused e-lactones in high yields with excellent diastereoselectivties and enantioselectivities. The thiazole-fused e-lactone could be isomerized to the spirocyclic thiazolone-cyclopentanone without erosion of enantioselectivity.
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页码:4841 / 4846
页数:6
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