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

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Hongyu HuShengxian Zhao

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 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.

References

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