Aromatic hydrazidines 3 have been synthetized by reaction of matic N'-methylhydrazidines 8 have been obtained by methyaromatic orthocarboxylates 4 with tert-butyl carbazate (5) and lation of N'-methyl (thi0hydrazides) 11, reaction of 12 with tert-reaction of the protected hydrazidines 7 with HCl/methanol butyl carbazate (5) and deprotection of 13 with HCl/methaor HBr/acetic acid. Aliphatic N'-methylhydrazidines 8 have nol.-Attempts to ...