An Unexpected Result of the Reaction of Benzothioamide Derivatives with 2-Aryl-2-bromoacetonitriles
作者:Hassan Zali Boeini、Mehdi Mobin
DOI:10.1002/hlca.201100110
日期:2011.11
Unexpectedly, in the reaction of 2‐bromo‐2‐phenylacetonitrile derivatives with 2 mol‐equiv. of benzothioamide in DMSO, 3,5‐diaryl‐1,2,4‐thiadiazoles were obtained in excellent yields (83–90%) and in short reaction times (5–10 min). It is found that, in DMF, a quite different reaction takes place and 2,5‐diaryl‐1,3‐thiazol‐4‐amines are formed as the main products.
出乎意料的是,在2-溴-2-苯基乙腈衍生物与2摩尔当量的反应中。DMSO中的苯甲硫酰胺可得到3,5-二芳基-1,2,4-噻二唑,收率极高(83-90%),反应时间短(5-10分钟)。发现在DMF中发生了完全不同的反应,并且形成了2,5-二芳基-1,3-噻唑-4-胺作为主要产物。