Synthesis and Intramolecular Heterocyclization of Some Isonicotinic Acid Thiosemicarbazides
The reaction of isonicotinic acid hydrazide with ethyl, allyl and cinnamoyl isothiocyanates leads to the formation of the corresponding alkylthiosemicarbazides and the products of their intramolecular heterocyclization - 1,2,4-triazoles.