Synthesis of 1,2,4-Thiadiazoles by Oxidative Dimerization of Carbothioamides by Using Oxone
作者:Akira Yoshimura、Anthony D. Todora、Brent J. Kastern、Steven R. Koski、Viktor V. Zhdankin
DOI:10.1002/ejoc.201402756
日期:2014.8
1,2,4-Thiadiazoles were efficiently synthesized in good yields through the oxidative dimerization of carbothioamides by using Oxone as a readily available, inexpensive, and environmentally safe oxidant. A similar reaction of phenylselenoamide led to the corresponding 1,2,4-phenylselenadiazole in high yield.
An unexpected synthesis of 3,5-diaryl-1,2,4-thiadiazoles from thiobenzamides and methyl bromocyanoacetate
作者:Abdelrahman S. Mayhoub、Evgeny Kiselev、Mark Cushman
DOI:10.1016/j.tetlet.2011.07.068
日期:2011.9
Aryl thioamides undergo very rapid condensation in the presence of methyl bromocyanoacetate to provide quantitative yields of 3,5-diaryl-1,2,4-thiadiazoles with an easy work-up and a high degree of product purity. The method can be scaled up with no loss in efficiency. (C) 2011 Elsevier Ltd. All rights reserved.