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An imidazolium tosylate salt as efficient and recyclable catalyst for acetylation in an ionic liquid

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Abstract

A novel non-metallic salt, 1-butyl-3-methylimidazolium tosylate ([bmim][OTs]) dissolved in the ambient temperature ionic liquid of 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]), was found to be the efficient catalyst for acetylation with the advantages of good recyclability, avoidance of metal contamination, mild reaction conditions, and wide availability for substrates (alcohols, phenols, and amines), could completely replace organic bases, metal Lewis acids, or metallic triflates to fulfill acetylation by a nucleophilic catalytic mechanism, which was supported by 13C NMR analysis.

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Correspondence to Ye Liu.

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Correspondence: Ye Liu, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Chemistry Department of East China Normal University, Shanghai 200062, China.

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Liu, Y., Liu, L., Lu, Y. et al. An imidazolium tosylate salt as efficient and recyclable catalyst for acetylation in an ionic liquid. Monatsh Chem 139, 633–638 (2008). https://doi.org/10.1007/s00706-007-0814-z

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  • DOI: https://doi.org/10.1007/s00706-007-0814-z

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