Synthesis of Coumarins via Pechmann Reaction in Water Catalyzed by Acyclic Acidic Ionic Liquids |
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| Authors: | Fang Dong Cheng Jian Gong Kai Shi Qunrong Liu Zuliang |
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| Affiliation: | (1) School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing, 210094, P.R. China;(2) Jiangsu Provincial Key Laboratory of Coastwetland Bioresources & Environment Protection, Yancheng, 224002, P.R. China |
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| Abstract: | Some recyclable acyclic SO3H-functionalized ionic liquids have been used as catalysts for Pechmann condensation reaction. N, N, N-trimethyl-N-propanesulfonic acid ammonium hydrogen sulfate TMPSA]HSO4] has been proved to be the most active catalyst. The coumarins products could simply be separated from the catalyst by filtration
and the catalyst could be recycled and reused for several times without noticeably decreasing the catalytic activity. |
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| Keywords: | Pechmann reaction Ionic liquid Catalyst |
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