Abstract A series of N-β-naphthalenesulfonylbenzohydrazidoyl chlorides 8a-d has been prepared by the action of thionyl chloride on the corresponding hydrazides 7a-d. Treatment of 8 with triethylamine and morpholine afforded the tetrazines 10 and the amidrazones 11 respectively. Acid hydrolysis of 11 yielded the hydrazides 7. Reaction of 8 with phenylhydrazine gave 3, 5-diaryltetrazoles 14. However, reaction of 8 with aroylhyrazines ...