Bis‐heterocycles. Part III.: Synthesis of tetramethylene‐3,3′‐di‐1,2,4‐triazoles and tetramethylene‐2,2′‐di‐1,3,4‐thiadiazoles

Tetramethylene‐4,4′‐bis(1‐arylthiosemicarbazides) were converted into tetramethylene‐3,3′‐bis(4‐aryl‐5‐mercapto‐1,2,4‐triazoles) and tetramethylene‐2,2′‐bis[5‐(arylamino)‐1,3,4‐thiadiazoles] under different reaction conditions. The bis(5‐mercapto‐1,2,4‐triazoles) were converted into their thiolates on treatment with alkyl halides. Some compounds were found to be active pesticides.