Improved syntheses of 5‐substituted‐4‐amino‐3‐mercapto‐(4H)‐1,2,4‐triazoles

Abstract Two improved methods have been developed for the synthesis of 5‐substiluted‐4‐amino‐3‐mercapto‐(4 H )‐1,2,4‐triazoles. One of these involves the direct hydrazinolysis of potassium 3‐aroyldithiocarbazates and the other involves ring‐opening and reclosure of 5‐substituted‐2‐mereapto‐1,3,4‐oxadiazoles to the aminomercaptotriazoles. Both of these methods offer advantages over the classic Hoggarth synthesis.