Molecules (2018)
Update date:2022-07-30
Topics: Amide Yield Ionic liquid Lactam Beckmann rearrangement Workup Substrate Scope Reaction Time Catalyst Loading Reusability Spectroscopic Analysis Acid Catalysis Solvent Effect Reaction temperature
Hu, Hongyu
Cai, Xuting
Xu, Zhuying
Yan, Xiaoyang
Zhao, Shengxian
Beckmann rearrangement of ketoxime catalyzed by acidic ionic liquid-N-methyl-imidazolium hydrosulfate was studied. Rearrangement of benzophenone oxime gave the desirable product with 45% yield at 90 ?C. When co-catalyst P2O5 was added, the yield could be improved to 91%. The catalyst could be reused three cycles with the same efficiency. Finally, reactions of other ketoximes were also investigated.
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