Abstract
The treatment of 2-(trimethylsilyl)thiazole with trifluoromethylsulfenyl chloride furnishes the expected 2-(trifluoromethylthio)thiazole in satisfactory yields along with the ring contraction product of the azirine-type. However, the reaction of 2-bromothiazol with trifluoromethylthiocopper gives poor yields of the above compound. The mechanism of formation and the mass spectral characterization of the products are presented in this article.