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.