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.
引用
收藏
页码:546 / 548
页数:3
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