BrΦnsted Acidic Ionic Liquids: Efficient and Recyclable Catalytic Systems for Beckmann Rearrangement

Chemical Research in Chinese Universities ›› 2011, Vol. 27 ›› Issue (6): 973-976.

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BrΦnsted Acidic Ionic Liquids: Efficient and Recyclable Catalytic Systems for Beckmann Rearrangement

WU Mao-cheng, DUAN Hai-feng*, CAO Jun-gang, LIANG Da-peng, JIANG Feng, GAO Han, JIA Xu-dong and LIN Ying-jie*

College of Chemistry, Jilin University, Changchun 130012, P. R. China

Received:2010-12-10 Revised:2011-01-15 Online:2011-11-25 Published:2011-11-07
Contact: DUAN Hai-feng;LIN Ying-jie E-mail:duanhf@jlu.edu.cn; linyj@jlu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(Nos.20771030, 20671025).

Abstract

Abstract: Six BrΦnsted acidic ionic liquids(ILs) 1a―1f were synthesized and used as the dual solvent-catalyst systems for Beckmann rearrangement reactions. Among ILs 1a―1f, IL 1a exhibited the highest catalytic activity and successfully catalyzed the Beckmann rearrangement of ketoximes, and the corresponding amides were obtained in good to excellent yields(74%―92%). In addition, IL 1a could be recovered easily and reused at least three times without any loss of catalytic activity.

Key words: BrΦnsted acidic ionic liquid, Beckmann rearrangement, Oxime

WU Mao-cheng, DUAN Hai-feng*, CAO Jun-gang, LIANG Da-peng, JIANG Feng, GAO Han, JIA Xu-dong and LIN Ying-jie. BrΦnsted Acidic Ionic Liquids: Efficient and Recyclable Catalytic Systems for Beckmann Rearrangement[J]. Chemical Research in Chinese Universities, 2011, 27(6): 973-976.

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BrΦnsted Acidic Ionic Liquids: Efficient and Recyclable Catalytic Systems for Beckmann Rearrangement

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