Selective O-acylation of aromatic hydroxylamines by 2-acylimidazolium and 2-acylbenzimidazolium salts
摘要:
2-Acyl 1,3-dimethylbenzimidazolium and 2-acyl 1,3-dimethylimidazolium salts react with N-aromatic hydroxylamines in the presence of base to give the O-acyl derivatives.