Synthesis of α,α′‐Bis(Substituted Benzylidene)Cycloalkanones Catalyzed by Amino‐Functionalized Ionic Liquid |
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| Authors: | Li‐Qin Kang Gong‐Hua Song Jia‐Yi Wang Bang‐Guo Wei |
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| Institution: | 1. Shanghai Key Laboratory of Chemical Biology, Institute of Pesticides & Pharmaceuticals, East China University of Science and Technology, Shanghai 200237, P. R. China;2. Department of Chemical and Engineering, Shanghai Instituted of Technology, Shanghai 200235, P. R. China;3. The Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China |
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| Abstract: | Condensation of aromatic aldehydes with cyclopentanone and cyclohexanone using amino‐functionalized ionic liquid, 1‐aminoethyl‐3‐methyl tetrafluoroborate as solvent and catalyst was successfully performed for preparation of α,α′‐bis(substituted benzylidene)cycloalkanones. The catalyst can be recovered and reused for at least three times without apparently lose of activity. The process is simple, environmentally benign and proceeds in excellent yields. |
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| Keywords: | α α ′ ‐Bis(substituted benzylidene)cycloalkanones Ionic liquid Condensation |
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