Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5220566 | Tetrahedron | 2012 | 5 Pages |
Abstract
Tandem addition-cyclization reactions of various 2-alkynylbenzenamines with CS2 lead to the formation of 2-mercapto-4-benzylidene-4H-benzo[d][1,3]thiazines under mild conditions. The reactions showed moderate to excellent yields and were highly regiospecific, and only the six-membered ring was generated via 6-exo-dig S-cyclization. The reaction can be transferred to highly functionalized 4-benzylidene-4H-benzo[d][1,3]thiazines via CuI-catalyzed crossing-coupling and reductive coupling reactions.
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Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Qiuping Ding, Xianjin Liu, Jinsheng Yu, Qiulan Zhang, Dan Wang, Banpeng Cao, Yiyuan Peng,