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Rhodium-catalyzed [2+2+2] cycloaddition reactions of terminal alkynes with N-sulfonyl ketimines
被引:5
|作者:
Zhang, Wei
[1
]
Zhang, Qian-Ru
[1
]
Dong, Lin
[1
]
机构:
[1] Sichuan Univ, Key Lab Drug Targeting & Drug Delivery Syst, Educ Minist, West China Sch Pharm, Chengdu 610041, Peoples R China
关键词:
1,2-Dihydropyridines;
Rhodium;
Terminal alkynes;
2+2+2] cycloaddition;
N-Sulfonyl ketimines;
STEREOSELECTIVE-SYNTHESIS;
AZA-NICKELACYCLE;
IMINES;
PYRIDINES;
1,2-DIHYDROPYRIDINES;
CYCLIZATION;
CHEMISTRY;
D O I:
10.1016/j.tetlet.2014.11.122
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
A simple approach for the direct synthesis of 1,2-dihydropyridines was developed involving a one-step rhodium-catalyzed [2+2+2] cycloaddition between N-sulfonyl ketimines and two terminal alkynes. Mechanistic studies suggested a stepwise reaction of an imine and alkyne with rhodium(III), followed by the insertion of a second alkyne. (C) 2014 Elsevier Ltd. All rights reserved.
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页码:546 / 548
页数:3
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