A novel pyrrolidinium ionic liquid with 1,1,2,2-tetrafluoro-2-(1,1,2,2-tetrafluoroethoxy)ethanesulfonate anion as a recyclable reaction medium and efficient catalyst for Friedel-Crafts alkylations of indoles with nitroalkenes |
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| Authors: | Jin-Hong Lin |
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| Affiliation: | Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, PR China |
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| Abstract: | A series of pyrrolidinium-based salts with new fluorine-containing anions were synthesized. Different melting points could be obtained by changing the length of the fluoroalkyl chain of the anions. The pyrrolidinium 1,1,2,2-tetrafluoro-2-(1,1,2,2-tetrafluoroethoxy)ethanesulfonate ([C4H8NH2][H(CF2)4O(CF2)2SO3]) is highly fluid even below room temperature. It can be used both as a recyclable solvent and as an efficient catalyst for Friedel-Crafts alkylations of indoles with nitroalkenes. |
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| Keywords: | Pyrrolidinium Ionic liquid Fluorine Friedel-Crafts alkylation |
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