A dramatic effect of the ionic liquid structure in esterification reactions in protic ionic media

Green Chemistry Pub Date: 2012-10-09 DOI: 10.1039/C2GC35941C

Abstract

Br?nsted acidic ionic liquids (ILs) have been synthesized and investigated as catalysts in esterification and transesterification reactions: simple and non-corrosive salts characterized by aliphatic cations associated with an “acidic” anion (in particular, [HSO4]?) gave the higher yields. A quite good correlation between IL acidity (H0) and catalytic ability was found although also the hydrophilic nature of the ionic medium probably affects the process efficiency.

Graphical abstract: A dramatic effect of the ionic liquid structure in esterification reactions in protic ionic media
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