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      Task-Specific Ionic Liquids

      Chemistry Letters

      The Chemical Society of Japan

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          Most cited references 28

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          CO2Capture by a Task-Specific Ionic Liquid

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            A short history of ionic liquids—from molten salts to neoteric solvents

             John Wilkes (2002)
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              Novel Brønsted acidic ionic liquids and their use as dual solvent-catalysts.

              The reaction of triphenylphosphine or N-butylimidazole with cyclic sultones gives zwitterions that are subsequently converted into ionic liquids by reaction with trifluoromethane sulfonic acid or p-toluenesulfonic acid. The resulting ionic liquids have cations to which are tethered alkane sulfonic acid groups. These Brønsted acidic ionic liquids are useful solvent/catalysts for several organic reactions, including Fischer esterification, alcohol dehydrodimerization and the pinacol rearrangement. The new ionic liquids combine the low volatility and ease of separation from product normally associated with solid acid catalysts, with the higher activity and yields normally found using conventional liquid acids.
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                Author and article information

                Journal
                Chemistry Letters
                Chem. Lett.
                The Chemical Society of Japan
                0366-7022
                1348-0715
                September 2004
                September 2004
                : 33
                : 9
                : 1072-1077
                Article
                10.1246/cl.2004.1072
                © 2004
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