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Hydrazidine, V. Synthese und Reaktionen aromatischer und aliphatischer Hydrazidine und derenN1-substituierter Derivate

✍ Scribed by Neunhoeffer, Hans ;Karafiat, Ute ;Köhler, Gernot ;Sowa, Birgit

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
885 KB
Volume
1992
Category
Article
ISSN
0947-3440

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✦ Synopsis

Hydrazidines, V. — Synthesis and Reactions of Aromatic and Aliphatic Hydrazidines and Their N^1^‐Substituted Derivatives

Aromatic hydrazidines 3 have been synthetized by reaction of aromatic orthocarboxylates 4 with tert‐butyl carbazate (5) and reaction of the protected hydrazidines 7 with HCl/methanol or HBr/acetic acid. Aliphatic N^1^‐methylhydrazidines 8 have been prepared by methylation of bis (tert‐butoxycarbonyl)‐hydrazidines 7 and deprotection with HBr/acetic acid. Aromatic N^1^‐methylhydrazidines 8 have been obtained by methylation of N^1^‐methyl(thiohydrazides) 11, reaction of 12 with tert‐butyl carbazate (5) and deprotection of 13 with HCl/methanol. — Attempts to remove both protecting groups in N^1^‐alkyl‐N^2^,N^4^‐bis

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