Bis-sulfonic acid ionic liquids for the conversion of Fructose to 5-Hydroxymethyl-2-furfural

Abstract

Homogenous bis-sulfonic acid ionic liquids (1 mol equiv.) in DMSO (10 mol equiv.) at 100 °C efficiently mediated the conversion of D-fructose into 5-hydroxymethyl-2-furfural in 75% isolated yield, which was roughly a 10% increment compared to the case of the mono-sulfonic acid ionic liquids. © 2012 by the authors.