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Beckmann Rearrangement of Ketoxime Catalyzed by N-methyl-imidazolium Hydrosulfate.

ABSTRACT: 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 P?O? 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.

SUBMITTER: Hu H

PROVIDER: S-EPMC6100402 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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Beckmann Rearrangement of Ketoxime Catalyzed by <i>N</i>-methyl-imidazolium Hydrosulfate.

Hu Hongyu H Cai Xuting X Xu Zhuying Z Yan Xiaoyang X Zhao Shengxian S

Molecules (Basel, Switzerland) 20180718 7

Beckmann rearrangement of ketoxime catalyzed by acidic ionic liquid-<i>N</i>-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. ...[more]

PMID: 30021992

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