Production of 5-hydroxymethylfurfural from fructose by a thermo-regulated and recyclable Brønsted acidic ionic liquid catalyst

Abstract

A thermo-regulated recyclable ionic liquid catalyst bearing acidic functional group for fructose dehydration to produce HMF in 91.2% yield.

Diamines for Polymer Materials via Direct Amination of Lipid‐ and Lignocellulose‐based Alcohols with NH3

“…[11][12][13][14][15][16][17][18][19][20] Subsequent conversions of this platform chemical provide desirable compounds such as hexanediol, 2,5-furan dicarboxylic acid, 2,5-bis(hydroxymethyl)furan (BHMF) [21][22][23] and dimethyl furan. [11][12][13][14][15][16][17][18][19][20] Subsequent conversions of this platform chemical provide desirable compounds such as hexanediol, 2,5-furan dicarboxylic acid, 2,5-bis(hydroxymethyl)furan (BHMF) [21][22][23] and dimethyl furan.…”

“…Cellulose, and in particularh emicellulose as an abundant low-cost feedstock can be converted into 5-hydroxymethylfurfural (5-HMF,S cheme1,u pper right part) by acid-catalyzed dehydration. [11][12][13][14][15][16][17][18][19][20] Subsequent conversions of this platform chemical provide desirable compounds such as hexanediol, 2,5-furan dicarboxylic acid, 2,5-bis(hydroxymethyl)furan (BHMF) [21][22][23] and dimethyl furan. [24,25] For example 2,5-furan dicarboxylic acid can be used as an alternative to terephthalic acid in the productiono fp olyesters materials.…”

Ionic Liquids in Biomass Processing

“…[146,147] The stepwise dehydration may occur through the dihydrofuran intermediate (4R,5R)-4-hydroxy-5-hydroxymethyl-4,5-dihydrofuran-2-carbaldehyde as in the case of dehydration of fructose in neat DMSO medium. [148] A wide variety of common ionic liquids; 1-ethyl-3-methylimidazolium hydrogensulfate, [149] N-methyl-2-pyrrolidonium hydrogensulfate, [150] dimethylimidazolium hydrogensulfate, [151,152] dimethylbenzaimidazolium hydrogensulfate, [151] 1-(4-butylsulfonic)-3-methylimidazolium hydrogensulfate, [153,154,155] 1-(4-butylsulfonic)-3allylimidazolium hydrogensulfate, trifluoromethanesulfonate, [156,157] 1-methyl-3-(butyl-4-chlorosulfonyl) imidazolium chlorosulfate, [158] 1-carboxymethyl-3-methyl imidazolium chloride, [159] 1-carboxypropyl-3-methyl imidazolium chloride [160] and Cr 3 + containing ÀSO 3 H functionalized polymeric BAILs [161] have been reported as catalysts in the dehydration of monosaccharides to HMF under relatively mild conditions.…”

Heterogeneous Nb-containing catalyst/N,N-dimethylacetamide–salt mixtures: novel and efficient catalytic systems for the dehydration of fructose

“…Homogeneous catalysts include mineral or organic acids, 15 various Lewis acids, 16,17 and ionic liquids. [18][19][20][21] Generally, these homogeneous catalysts are effective for the dehydration. But the separation and recovery of the catalysts are difficult, which limit the wide application of these catalysts.…”