Preparation of 2-Unsubstituted 5-Aryl(hetaryl)-1-hydroxy-1 H -Imidazoles from of 4-Aryl(hetaryl)-1-hydroxy-2,5-dihydro-1 H -Imidazole-2-carboxylic Acid 3-Oxides
Chemistry of heterocyclic compounds(2024)
摘要
Alkylaromatic 1-hydroxyamino-2-oximes reacted at the hydroxyamino group with glyoxylic acid hydrate, providing 4-aryl(hetaryl)-1-hydroxy-2,5-dihydro-1H-imidazole-2-carboxylic acid 3-oxides that were converted upon heating into 5-aryl(hetaryl)-1-hydroxy-1H-imidazoles containing a hydrogen atom at the heterocycle position 2.
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关键词
glyoxylic acid,hydroxyaminooximes,1-hydroxy-2,5-dihydro-1H-imidazole 3-oxides,1-hydroxy-1H-imidazoles
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