A Brønsted acidic ionic liquid as an efficient and reusable catalyst system for esterification
Authors:
- 11 July 2007
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Green Chemistry
- Vol. 9 (11) , 1208-1211
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-pyrrolidonium methyl 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.Keywords
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