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Issue 11, 2007
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A Brønsted acidic ionic liquid as an efficient and reusable catalyst system for esterification

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Abstract

Under mild conditions and without any additional organic solvent, esterification of alcohols by carboxylic acids could be carried out in a halogen-free Brønsted acidic ionic liquid, N-methyl-2-pyrrolidoniummethyl sulfonate ([NMP]+CH3SO3). Good conversion rates and high selectivities were obtained, especially for esterification of ethanol by acetic acid, and the liquid esters formed a separate phase that was decanted. The ionic liquid could be reused after removal of water under vacuum.

Graphical abstract: A Brønsted acidic ionic liquid as an efficient and reusable catalyst system for esterification

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Publication details

The article was received on 11 Apr 2007, accepted on 25 Jun 2007 and first published on 11 Jul 2007


Article type: Paper
DOI: 10.1039/B705480G
Citation: Green Chem., 2007,9, 1208-1211
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    A Brønsted acidic ionic liquid as an efficient and reusable catalyst system for esterification

    H. Zhang, F. Xu, X. Zhou, G. Zhang and C. Wang, Green Chem., 2007, 9, 1208
    DOI: 10.1039/B705480G

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