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Alkyl N ‐methylfuroxanylcarbamates. Synthesis and structure. II
Author(s) -
Gasco A.,
Mortarini V.,
Ruà G.,
Menziani E.
Publication year - 1972
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570090413
Subject(s) - carbamic acid , chemistry , curtius rearrangement , hydrazide , derivative (finance) , azide , alkyl , medicinal chemistry , organic chemistry , financial economics , economics
From 3‐methyl‐4‐furoxancarboxylic acid hydrazide and 4‐methyl‐3‐furoxancarboxylic acid hydrazide the corresponding azides have been synthesized. 3‐Methyi‐4‐furoxancarboxylic acid azide normally underwent the Curtius reaction to give the expected carbamic acid derivative. The degradation of 4‐methyl‐3‐furoxancarboxylic acid azide led to the N ‐(4‐methylfuroxan‐3‐yl)‐carbamic acid derivative at low temperatures and to N ‐(3‐methylfuroxan‐4‐yl)carbamic acid derivative at higher temperatures.