Sun, Kai published the artcileConversion of monosaccharides into levulinic acid/esters: impacts of metal sulfate addition and the reaction medium, Synthetic Route of 539-88-8, the main research area is inorganic metal salt catalyst glucose fructose dehydration.
Inorganic salts could be used as catalysts for the effective conversion of sugars. In this study, the impacts of various metal sulfates (Na2SO4, K2SO4, MnSO4, CoSO4, NiSO4, ZnSO4, CuSO4, Fe2(SO4)3, La2(SO4)3 and Ce(SO4)2) on the conversion of glucose/fructose to levulinic acid in varied reaction media were evaluated. The sulfates themselves showed varied activity and selectivity for the conversion of the sugars to levulinic acid/esters or 5-hydroxymethylfurfural (HMF), depending on the coordination with the reaction medium. K2SO4 or Na2SO4 could catalyze the production of HMF from glucose/fructose in water, while in DMSO the yield of HMF was substantially higher. In THF, nevertheless, almost no HMF was formed, while other sulfates such as NiSO4 in THF could effectively catalyze the conversion of fructose to HMF. In alcs., Fe2(SO4)3 was the most effective sulfate for the conversion of the sugars to levulinic acid/esters, and the alcs. could effectively suppress the polymerization of the sugars. The distinct catalytic performances of the sulfates in the varied reaction media originated from their different coordination or chelation with the sugars and the reaction medium.
Journal of Chemical Technology and Biotechnology published new progress about Chelation. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Synthetic Route of 539-88-8.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics