Synthesis of 2-aroyl-1-hydroxy-4,5-dimethylimidazoles by reaction of 3-hydroxyamino-2-butanone oxime with arylglyoxals*
摘要:
Treatment of the acetate of 3-hydroxyamino-2-butanone oxime with arylglyoxals gives alpha-aroylnitrones which cyclize under acid catalyzed conditions to form principally 2-aroyl-1-hydroxy-4,5-dimethylimidazoles. An X-ray structural analysis of 2-benzoyl-1-hydroxy-4,5-dimethylimidazole has been carried out.