An Efficient One‐pot Synthesis of Pyrazolone Derivatives Promoted by Acidic Ionic Liquid |
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| Authors: | Hongjun Zang Qiuhong Su Song Guo Yingming Mo Bowen Cheng |
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| Affiliation: | 1. Department of Enviromental and Chemistry Engineering, Tianjin Polytechnic University, Tianjin 300160, China;2. State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin 300160, China |
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| Abstract: | A new class of pyrazolone derivatives has been isolated in good to excellent yields from the 2:1 condensation reaction between 3‐methyl‐1‐phenyl‐5‐pyrazolone and arylaldehydes in the presence of ionic liquid [HMIM]HSO4. The compounds were characterised by their IR, NMR spectra, MS and elemental analyses. The important features of the methodology are a wide application range of substrates, higher yields and shorter reaction time. |
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| Keywords: | pyrazole ionic liquid 3‐methyl‐1‐phenyl‐5‐pyrazolone aldehydes |
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