Eosin Y Catalyzed Visible-Light-Driven Aerobic Oxidative Cyclization of Thioamides to 1,2,4-Thiadiazoles

被引：77
|
作者：
Srivastava, Vishnu P. [1 ]
Yadav, Arvind K. [1 ]
Yadav, Lal Dhar S. [1 ]
机构：
[1] Univ Allahabad, Dept Chem, Green Synth Lab, Allahabad 211002, Uttar Pradesh, India
来源：
SYNLETT | 2013年 / 24卷 / 04期
关键词：
visible light; eosin Y; photoredox; thioamides; cyclization; thiadiazoles; PHOTOREDOX CATALYSIS; 3,5-DISUBSTITUTED 1,2,4-THIADIAZOLES; DIASTEREOSELECTIVE SYNTHESIS; OXIDIZING-AGENTS; EFFICIENT; DIMERIZATION; PHOTOCATALYSIS; HETEROCYCLES; DERIVATIVES; INHIBITORS;
D O I：
10.1055/s-0032-1318158
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
A new approach for an efficient metal-free synthesis of 1,2,4-thiadiazoles from primary thioamides using visible light and air in the presence of eosin Y as a photoredox catalyst is reported. The protocol involves an aerobic oxidative cyclization of thioamides via the formation of C-N and C-S bonds to afford excellent yields of the products in a simple one-pot operation under mild conditions.
引用
收藏
页码：465 / 470
页数：6
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