5856-90-6Relevant articles and documents
Investigation of PEG-6000 bridged -N-SO 3H functionalized geminal dicationic ionic liquids for catalytic conversion of fructose to 5-hydroxymethylfurfural
Gogoi, Pinky,Borah, Ruli
, (2018)
Abstract: Eight new members of two series of PEG-6000-bridged geminal dicationic ionic liquids based on diphenylammonium/imidazolium cation were synthesized by the change of four anions CF 3COO -, CCl 3COO -, AcO - and HSO4-. They were investigated as reusable acidic catalysts for dehydration of fructose to 5-hydroxymethylfurfural in polar aprotic solvent. The characterizations of dicationic ionic liquids were done using 1H NMR , 13C NMR , IR and TGA analyses. Irrespective of Hammett acidity strength of the eight ILs, they displayed single peak selectivity for the 5-hydroxymethyl furfural intermediate in HPLC analysis. Graphical Abstract: Two series of N-sulfonic acid functionalized PEG-6000 bridged geminal dicationic diphenylammonium/imidazolium ionic liquids were developed in pair with CF 3COO -, CCl 3COO -, AcO - and HSO4- anions. Single peak selectivity of 5-hydroxymethylfurfural in HPLCs was observed from dehydration of fructose in polar aprotic solvent using these acidic ionic liquid catalysts.[Figure not available: see fulltext.].