Heterocyclic Compounds
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ChemInform Abstract: Transformations of the Imidazole Ring in 1-Alkyl- and 1-Aryl-4- nitroimidazoles Following the Attack of Hydroxylamine or 4-Amino-1,2,4- triazole.
First published: 04 August 2010
Abstract
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ChemInform Abstract
Novel imidazole-oxadiazole ring interconversions accompanying the nucleophilic amination of 2-methyl-4-nitroimidazoles (I) by 4- aminotriazole (II) or hydroxylamine are described. Imidazole- oxadiazole transformations fail to appear by reacting 4- nitroimidazoles lacking the 2-methyl substituent (cf. (VI)). Mechanistic suggestions are discussed.
