One‐Pot Conversions of Raffinose into Furfural Derivatives and Sugar Alcohols by Using Heterogeneous Catalysts

摘要: Inedible and/or waste biomass reserves are being strongly focused upon as a suitable new energy and chemical source. Raffinose, which is an indigestible trisaccharide composed of glucose, galactose, fructose, found abundantly in beet molasses, sugar cane, seeds many leguminous plants. Herein, we demonstrate the one-pot synthesis furan derivatives alcohols from raffinose by using heterogeneous acid, base, metal-supported catalysts. The combination Amberlyst-15 hydrotalcite (HT) showed high activity (37 % yield) for 5-hydroxymethyl-2-furaldehyde (HMF) through continuous hydrolysis, isomerization, dehydration reactions. In addition, use hydrotalcite-supported ruthenium catalyst (Ru/HT) successfully afforded 2,5-diformylfuran (DFF, 27 % HMF produced raffinose, directly. Moreover, hydrogenation hexoses obtained hydrolysis into (galactitol, mannitol, sorbitol) was also achieved yield (91 %) with Ru/HT Thus, suggest that has great potential important industrial intermediates under mild reaction conditions.