Novel Brønsted acidic deep eutectic solvent as reaction media for esterification of carboxylic acid with alcohols |
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| Authors: | Valerio De SantiFabio Cardellini Lucia BrinchiRaimondo Germani |
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| Institution: | a CEMIN, Centro di Eccellenza Materiali Innovativi Nanostrutturati, Dipartimento di Chimica, Università di Perugia, via Elce di Sotto 8, Perugia I-06123, Italy
b CRB, Centro di Ricerca sulle Biomasse, Dipartimento di Ingegneria Industriale, via G Duranti, Perugia I-06125, Italy |
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| Abstract: | New halogen-free Brønsted acidic deep eutectic solvents (DES) have been prepared by mixing new quaternary ammonium methanesulfonate salts with p-toluenesulfonic acid (PTSA). They have been used as dual solvent-catalyst for esterification of several carboxylic acids with different alcohols with a reagent molar ratio of 1:1. The method is mild, safe, and simple. Ease of recovery and reusability of DES with high activity makes this method efficient and eco-friendly. The tunability of DES properties, attained by changes in the cation, was performed in order to achieve various esters in good yields. |
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| Keywords: | Deep eutectic solvent Brø nsted acid p-Toluenesulfonic acid Fischer esterification Ionic liquids |
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