Electrochemical C-H Thiocyanation/Halogenation of 4-Arylthioazol-2-ones

Abstract

Direct thiocyanation of 4-arylthioazol-2-one was performed by electrochemical process using ammonium thiocyanate as the thiocyanating agent at room temperature without any supportive electrolyte. From control ex periments, it is clear that the reaction proceeds through a radical pathway. A similar process was also employed for the C5-halogenation of 4-arylthioazol-2-one using ammonium halides as the halogen sources. Further, the thiocyanated 4-thioazol-2-ones were transformed to sulfenyl derivatives.