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Three-Component Cascade Annulation of β-Ketothioamides Promoted by CF3CH2OH: A Regioselective Synthesis of Tetrasubstituted Thiophenes
被引:67
|作者:
Wen, Li-Rong
[1
]
He, Tao
[1
]
Lan, Ming-Chao
[1
]
Li, Ming
[1
]
机构:
[1] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China
来源:
基金:
中国国家自然科学基金;
关键词:
ONE-POT SYNTHESIS;
FUNCTIONALIZED N;
S-KETENE ACETAL;
4-COMPONENT DOMINO REACTION;
KETENE AMINALS SYNTHESIS;
EFFICIENT SYNTHESIS;
SOLVENT-FREE;
MULTICOMPONENT REACTIONS;
FLUORINATED ALCOHOLS;
STEREOSELECTIVE-SYNTHESIS;
POLYSUBSTITUTED PYRROLES;
D O I:
10.1021/jo401397d
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
A rapid and highly efficient method for the regioselective synthesis of thiophene derivatives has been developed by annulation of beta-ketothioamides with arylglyoxals and 5,5-dimethyl-1,3-cyclohexanedione in CF3CH2OH within 15 min. The present synthesis has several desirable features, such as high regioselectivity, a concise one-pot protocol, short reaction time, and easy purification. This methodology provides an alternative approach for easy access to tetrasubstituted thiophenes via a one-pot cascade reaction without other additives.
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页码:10617 / 10628
页数:12
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