40817-35-4

Upstream product

• 64-17-5 ethanol 
• 57-50-1 Sucrose 
• 50-99-7 D-glucose 
• 2280-44-6 D-Glucose 
• 470-23-5 D-fructose 

Relevant academic research and scientific papers

Pillared Sn-MWW Prepared by a Solid-State-Exchange Method and its Use as a Lewis Acid Catalyst

Pillared Sn-MWW (Sn-MWW(SP)-SSE) was prepared through a solid-state-exchange (SSE) route. The pillared structure was inherited from pillared B-MWW, and Sn was inserted in the framework by boron leaching and solid-state-exchange with tin tetrachloride pentahydrate. The Sn-MWW(SP)-SSE with framework Sn sites exhibits Lewis acidity and good catalytic performance for the Baeyer-Villiger oxidation, and mono- and disaccharide isomerizations.

A Chromium Hydroxide/MIL-101(Cr) MOF Composite Catalyst and Its Use for the Selective Isomerization of Glucose to Fructose

A metal–organic framework (MOF)-based catalyst, chromium hydroxide/MIL-101(Cr), was prepared by a one-pot synthesis method. The combination of chromium hydroxide particles on and within Lewis acidic MIL-101 accomplishes highly selective conversion of gluc

METHOD OF PREPARING FURFURAL COMPOUNDS

Provided is a two-step method of producing a compound of chemical formula 1 in the presence of an alcohol solvent and a Group 3B metal catalyst or a salt thereof, comprising a first step comprising alkylation or isomerization of an aldohexose-containing substrate to obtain an intermediate, and a second step comprising dehydration of the intermediate to produce a compound of chemical formula 1. Preferably, additional solvent and/or catalyst are not added in the second step.

Efficient isomerization of glucose to fructose over zeolites in consecutive reactions in alcohol and aqueous media

Isomerization reactions of glucose were catalyzed by different types of commercial zeolites in methanol and water in two reaction steps. The most active catalyst was zeolite Y, which was found to be more active than the zeolites beta, ZSM-5, and mordenite. The novel reaction pathway involves glucose isomerization to fructose and subsequent reaction with methanol to form methyl fructoside (step 1), followed by hydrolysis to re-form fructose after water addition (step 2). NMR analysis with 13C-labeled sugars confirmed this reaction pathway. Conversion of glucose for 1 h at 120 C with H-USY (Si/Al = 6) gave a remarkable 55% yield of fructose after the second reaction step. A main advantage of applying alcohol media and a catalyst that combines Bronsted and Lewis acid sites is that glucose is isomerized to fructose at low temperatures, while direct conversion to industrially important chemicals like alkyl levulinates is viable at higher temperatures.

Conversion of fructose into 5-hydroxymethylfurfural (HMF) and its derivatives promoted by inorganic salt in alcohol

The conversion of d-fructose to 5-hydroxymethylfurfural (HMF) on a 1 mmol scale was achieved in good yield (68%) using NH4Cl as catalyst in isopropanol at 120 °C. About 3% of 5-i-propoxymethylfurfural was formed. The reaction in ethanol at 100 °C on a 10 g scale gave a total yield of HMF and 5-ethoxymethylfurfural of 42%. No mineral acid such as H2SO 4 and HCl are required.

THERMOLYSIS OF SUCROSE IN THE PRESENCE OF ALCOHOLS. A NOVEL METHOD FOR THE SYNTHESIS OF D-FRUCTOFURANOSIDES

When sucrose is thermolyzed in the presence of alcohols, either neat or in dimethyl sulfoxide solution, the products are mainly D-glucose and the appropriate alkyl D-fructofuranosides.Conditions have been investigated for optimizing the yields of the latter products, with a view to utilization of the reaction as a synthetic method.Such sterically hindered alcohols as 2-methyl-2-propanol and three sterols did not readily take part in the reaction.Phenols appear to undergo the reaction, but the phenyl D-fructofuranosides are probably degraded subsequently, to give increased yields of 2,6-anhydro-D-fructofuranose.