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536 - Organic compounds -- part of the class 532-570 series


536100110 - Carbohydrates or derivatives

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Class / Patent application numberDescriptionNumber of patent applications / Date published
536127000 Purification or recovery 54
536125000 Isomerization 3
20090306366Manufacturing Method Of Tagatose Using Galactose Isomerization Of High Yield - The present invention relates to a manufacturing method of tagatose using galactose isomerization of high yield, more particularly a method to enhance conversion rate of isomerization by adding borate which binds specifically to tagatose and a manufacturing method of tagatose using the same.12-10-2009
20110207923ISOMERIZATION OF SUGARS - Disclosed are processes for isomerizing saccharides. Also disclosed are processes for converting saccharides to furan derivatives. Also disclosed are processes for converting starch to furan derivatives.08-25-2011
20100234587Tagatose preparation - The present invention relates to a process for industrially producing tagatose starting from galactose and provides for chemical isomerisation in presence of XAlO09-16-2010
536126000 Polymerization 1
20090247741PROCESS FOR THE PRODUCTION OF MULTIPLE CROSS-LINKED HYALURONIC ACID DERIVATIVES - The present invention relates to a process for the production of cross-linked hyaluronic acid (HA) derivatives, in particular multiple, e.g. double cross-linked hyaluronic acid derivatives. The invention also provides novel cross-linked HA derivatives, products containing them and their uses in medical and pharmaceutical and cosmetic applications.10-01-2009
20100063271SUPERCRITICAL FLUID BIOMASS CONVERSION SYSTEMS - Disclosed herein are supercritical fluid biomass conversion machines, systems, and methods for converting a wide range of biomass materials into a plurality of reaction products including fermentable sugars and various aromatic substances. In one embodiment, a method is disclosed that comprises the steps of: providing an extruder; conveying a mixture of the selected biomass material and water through the extruder and into a supercritical fluid biomass conversion zone; heating and further pressurizing the mixture within the supercritical fluid biomass conversion zone to yield at least supercritical water, wherein heat energy is supplied by means of an induction heating coil positioned circumferentially about the supercritical fluid biomass conversion zone; retaining the mixture within the supercritical fluid biomass conversion zone for a period of time sufficient to yield the plurality of reaction products; and separating the plurality of reaction products into at least a water soluble fraction and an organic solvent soluble fraction.03-11-2010
20130030168Device For Synthesis Of Radiopharmaceutical Products - The invention concerns a device for synthesis of radiopharmaceutical products based on chemical reagents contained in bottles, said device comprising several reaction compartments, transfer means between said bottles and said reaction compartments as well as mechanical means acting on said transfer means and enabling to monitor and control mechanically the transfer of chemical reagents. The invention is characterized in that it comprises: a fixed module including at least the mechanical means; a removable and disposable module, essentially in the shape of a support, whereon are arranged the transfer means between said bottles and said reaction compartments, said removable and disposable module not including any mechanical means; and means for securing said removable and disposable module to said fixed module.01-31-2013
20090198048GLYCEROSE SYNTHESIS - Glycerose is prepared by partially oxidizing biodiesel-derived glycerol to provide a glycerose liquor containing glycerose and other side products of the glycerol oxidation reaction. The glycerose liquor may be combined without further isolation, purification or drying with a protein-containing fodder or fodder precursor to provide a rumen undegradable protein-containing ruminant feed product.08-06-2009
20100056774METHOD FOR LOW WATER HYDROLYSIS OR PRETREATMENT OF POLYSACCHARIDES IN A LIGNOCELLULOSIC FEEDSTOCK - A method is provided for hydrolyzing polysaccharides in a lignocellulosic feedstock to produce monosaccharides or pretreating a lignocellulosic feedstock, in which an aqueous slurry of the lignocellulosic feedstock is fed into a pressurized dewatering zone wherein the feedstock is partially dewatered and then is compressed into a plug. The plug is introduced into a reaction zone that operates at a pressure (P03-04-2010
20100056773DECOLORIZATION OF PROCESS STREAMS BY CHEMICAL OXIDATION IN THE MANUFACTURE OF TRICHLOROGALACTOSUCROSE - A process is described in which decolorization of solutions or reaction mixtures containing trichlorogalactosucrose or 6-acetyl trichlorogalactosucrose is achieved described by bubbling ozone. The method can be used at various stages in the process of production and with or without a combination with other adsorbents for colour removal.03-04-2010
20100105890METHOD FOR PRODUCING FURANOSE DERIVATIVE - An object of the present invention is to provide a industrially appropriate method for producing the β-anomers of ribofuranose derivatives in a highly selective manner at a high yield. The present invention provides a method for producing ribofuranose derivatives wherein β-anomers is precipitated from among the generated furanose derivatives by controlling the amount of a reaction reagent used and/or using a poor solvent in the acetolysis reactions of 2,3,5-tri-O-acyl-04-29-2010
20100105891PROCESS FOR PRODUCING NONCRYSTALLINE CELLULOSE - The present invention relates to a process for producing a decrystallized cellulose having a reduced cellulose I-type crystallinity from a cellulose-containing raw material in an efficient manner with an excellent productivity. In accordance with the present invention, there is provided a process for producing a decrystallized cellulose from a raw material containing a cellulose having a cellulose I-type crystallinity of more than 33% as calculated from the following formula:04-29-2010
20090306364USE OF SPECIAL SCREENS IN THE PREPARATION OF CELLULOSE POWDER - The present invention refers to the use of screens comprising at least two layers of different mesh or pore size in a cellulose powder preparation method as well as to said method, wherein grinding the cellulose pulp and sieving the obtained particles can be carried out on-line.12-10-2009
20090306363Preparation Method of Bioresorbable Oxidized Cellulose - Bioresorbable material made of oxidized natural or regenerated cellulose intended primarily for health care purposes is prepared in such a way that a solvent from the family of perfluoroethers or perfluoropolyethers with the boiling point between 50 and 110° C. is used for the oxidation by dinitrogen tetraoxide.12-10-2009
20110015387METHOD FOR THE DEPOLYMERIZATION OF CELLULOSE - A process for the depolymerization of cellulose, in which a solution of cellulose in an ionic liquid is brought into contact with a solid acid as catalyst, is claimed. The cellulose can be depolymerized within a short reaction time to form a low molecular weight or oligomeric reaction mixture having a narrow molecular weight distribution (low polydispersity, d, defined as ratio of P01-20-2011
20090299054SUCRALOSE PURIFICATION PROCESS - A process for the extraction of sucralose from an aqueous solution containing at least sucralose, other chlorinated saccharides, sodium chloride and dimethylammonium chloride into an organic solvent for sucralose by contacting said organic solvent with said solution to extract sucralose into the organic solvent. The ratio of sodium chloride to dimethylammonium chloride in the aqueous solution is increased prior to or during contact so as to increase the partition coefficient of sucralose into said organic solvent.12-03-2009
20090270608METHOD FOR CONVERSION OF CARBOHYDRATE POLYMERS TO VALUE-ADDED CHEMICAL PRODUCTS - Methods are described for conversion of carbohydrate polymers in ionic liquids, including cellulose, that yield value-added chemicals including, e.g., glucose and 5-hydroxylmethylfurfural (HMF) at temperatures below 120° C. Catalyst compositions that include various mixed metal halides are described that are selective for specified products with yields, e.g., of up to about 56% in a single step process.10-29-2009
20100267942REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS PRODUCED IN A TETRAALKYLAMMONIUM ALKYLPHOSPHATE IONIC LIQUID PROCESS AND PRODUCTS PRODUCED THEREFROM - This invention relates a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate and processes to produce the cellulose solution. Another aspect of this invention relates to shaped articles prepared from a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate. Another embodiment of this invention relates to compositions comprising derivatives of cellulose prepared from a cellulose solution comprising at least one tetraalkylammonium alkylphosphate. Another embodiment of this invention relates to compositions comprising regioselectively substituted cellulose esters prepared from a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate. In another embodiment of the invention, the cellulose esters of the present invention are used as protective and compensation films for liquid crystalline displays.10-21-2010
20090076260HYDROGENATION PROCESS - The invention relates to an improved process for the production of a sugar alcohol from the corresponding sugar through catalytic hydrogenation. Especially, the invention relates to a process for reducing the interference of sugar-derived aldonic acids in the hydrogenation process by adjusting the hydrogenation conditions so that the activity of the catalyst is maintained. In one embodiment of the invention, the process of the invention is carried out by adjusting the hydrogenation temperature by starting the hydrogenation at a lower temperature and then gradually rising the temperature to the final hydrogenation temperature. In another embodiment of the invention, the process of the invention is carried out by adding small-molecular monocarboxylic acids to the hydrogenation solution.03-19-2009
20090149647PROCESS FOR PRODUCTION OF LIPID A ANALOGUE - Discloses is a process for producing α-D-glucopyranose, 3-O-decyl-2-deoxy-6-O-[2-deoxy-3-O-[(3R)-3-methoxydecyl]-6-O-methyl-2-[(11Z)-1-oxo-11-octadecenyl]amino]-4-O-phosphono-β-D-glucopyranosyl]-2-[(1,3-dioxotetradecyl)amino]- or 1-(dihydrogen phosphate) tetrasodium salt which is useful as an active ingredient of a pharmaceutical or an intermediate for the synthesis thereof, which is environment-friendly and excellent in safety, operationality and reproducibility. A process for producing a compound represented by the formula (I) comprising the steps of reacting a compound represented by the formula (VIII) with a palladium catalyst in the presence of a nucleopholic agent and treating the product with a sodium source.06-11-2009
20100121047METHODS AND APPARATUS FOR HYDROLYZING CELLULOSIC MATERIAL - A method of hydrolyzing woody cellulosic material containing lignin and air pockets involves impregnating the woody cellulosic material a first alkali having a pH of from 10 to 14 such that the first alkali is in contact with the lignin within the woody cellulosic material. Thereafter, the woody cellulosic material is advanced through a gravity pressure vessel for the acid hydrolysis conversion of cellulosic material to sugars. In accordance with other methods, ultrasound may be introduced during impregnation or at the gravity pressure vessel or both.05-13-2010
20110207922MONOSACCHARIDE PREPARATION METHOD - An object of the present invention is to provide means for preparing a monosaccharide by efficiently hydrolyzing a polysaccharide. In particular, in a method that uses a homogeneous acid catalyst to obtain a monosaccharide from a polysaccharide, a low energy, low cost catalytic separation method is provided, and in addition, a method for obtaining high reaction selectivity is provided. In addition, provided is a homogeneous acid catalyst separation method that separates a homogeneous acid catalyst from a homogeneous acid catalyst-containing solution with high efficiency and realizes a high homogeneous acid catalyst recovery ratio at low energy costs, and that is applicable to a variety of reaction systems.08-25-2011
20090247740SPHERICAL SULFATED CELLULOSE AND PRODUCTION PROCESS FOR THE SAME - The invention provides spherical sulfated cellulose which has a high sulfur content and which is excellent for adsorbing proteins, a production process for the same, a protein adsorbing agent containing the above spherical sulfated cellulose and a chromatography apparatus using the same for a filler. More specifically, the invention provides a process for producing spherical sulfated cellulose comprising a step in which spherical cellulose is subjected to at least one sulfate esterification treatment with a mixture of N,N-dimethylformamide and sulfuric anhydride.10-01-2009
20080262217METHOD OF PHYSICOCHEMICALLY PRODUCING GLYCOGEN AND GLYCOGEN OBTAINED BY THE SAME - A method of producing glycogen is provided. The method comprises the step of heat- and pressure-treating a sugar-containing material under acidic conditions. The sugar-containing material is a polysaccharide or an oligosaccharide. Alternatively, the sugar-containing material is a plant material selected from the group consisting of Panax notoginseng, Yun Nan San-chi powder (trademark), Panax ginseng, wheat flour, soybean, soy flour, shiitake, and coffee extract residue. Representatively, the glycogen includes a molecule having a molecular weight of 10,000 or less. The glycogen has a specific rotation of [α]10-23-2008
20120077972Chlorination of sucrose-6-esters - A method for the chlorination of a sucrose-6-acylate to produce a 4,1′,6′-trichloro-4,1′,6′-trideoxy-galactosucrose-β-acylate wherein said method comprises: (i) reacting the sucrose-6-acylate with a chlorinating agent in a reaction vehicle comprising a tertiary amide in order to chlorinate the 4, V and 6′ positions of the sucrose-6-acylate; and (ii) quenching the product stream of (i) to produce a 4,1′,6′-trichloro-4,1′,6′-trideoxy-galactosucrose-6-acylate; wherein before said quenching, a portion of the tertiary amide is removed.03-29-2012
20100190974SOLID PHASE REACTION METHOD AND APPARATUS - A solid phase reaction method comprising an elongate material of (07-29-2010
20110130561METHOD FOR LYSING CELLULOSE - A method for obtaining a saccharide by lysing cellulose which is substance that is not readily lysed. Cellulose is mixed in acidic electrolyzed water, and the resulting mixture is stirred at a maximum temperature of 210° C. and at saturation vapor pressure of 1.9 MPa to obtain a saccharide.06-02-2011
20110009614PROCESSES AND REACTOR SYSTEMS FOR CONVERTING SUGARS AND SUGAR ALCOHOLS - Processes and reactor systems are provided for the conversion of sugars to sugar alcohols using a hydrogenation catalyst, which includes apparatus and method for in-line regeneration of the hydrogenation catalyst to remove carbonaceous deposits.01-13-2011
20110213141METHOD FOR PREPARING 1,6:2,3-DIANHYDRO-BETA-D-MANNOPYRANOSE - The invention relates to a method for preparing 1,6:2,3-dianhydro-â-D-mannopyranose and is characterized in that it includes a step of cyclizing the compound C, where R is an alykyl group and R′ is an activating agent, in an alcohol/alcoholate mixture under anhydrous conditions.09-01-2011
20110245490C-GLYCOSIDE COMPOUNDS, AND METHOD FOR PREPARING C-GLYCOSIDE COMPOUNDS - The invention relates to C-glycose compounds of formula (I) where: S′ is a monosaccharide radical or a polysaccharide radical derived from a monosaccharide or polysaccharide S; R is a linear or branched alkyl radical; and Z is an ethylenyl CH═CR1(R2) or an acetylenyl C≡CR3 radical. The invention also relates to a method for preparing C-glycoside compounds of formula (III), characterised in that the method consists of a step of reacting a sugar (S), in an aqueous solvent or in the absence of a solvent and in the presence of an organic or mineral base (B), with a phosphonate of formula (II) according to the following reaction pattern: Formulas (II), (III).10-06-2011
20110245489METHOD OF INCREASING ANHYDROSUGARS, PYROLIGNEOUS FRACTIONS AND ESTERIFIED BIO-OIL - The device and method of this invention provides a means to increase anhydrosugars yield during pyrolysis of biomass. This increase is achieved by injection of a liquid or gas into the vapor stream of any pyrolysis reactor prior to the reactor condensers. A second novel feature of our technology is the utilization of sonication, microwave excitation or shear mixing of the biomass to increase the acid catalyst rate for demineralization or removal of hemicellulose prior to pyrolysis. The increased reactivity of these treatments reduces reaction time as well as the required amount of catalyst to less than half of that otherwise required. A fractional condensation system employed by our pyrolysis reactor is also a novel element of our technology. This system condenses bio-oil pyrolysis vapors to various desired fractions by differential temperature manipulation of individual condensers comprising a condenser chain.10-06-2011
20090043089Method for preparing polyanhydroglucuronic acid and/or salts thereof - A method for preparing polyanhydroglucuronic acid and/or salts thereof is described. A polyanhydroglucuronic acid-containing material obtained by oxidation is subjected to partial or complete hydrolysis to form a homogeneous system, subsequent ion exchange in the homogeneous system; and supplemental oxidation in the presence of any one or more of organic and inorganic peroxides.02-12-2009
20120202986SYSTEM AND METHOD FOR GAS REACTION - Herein disclosed is an apparatus having a first porous rotor positioned about an axis of rotation, wherein the first porous rotor comprises a first catalyst; an outer casing, wherein the outer casing and the first porous rotor are separated by an annular space; and a motor configured for rotating the first porous rotor about the axis of rotation.08-09-2012
20110028710PROCESS FOR THE RECOVERY OF HCL FROM A DILUTE SOLUTION THEREOF AND EXTRACTANT COMPOSITION FOR USE THEREIN - There is provided a process for the recovery of HCI from a dilute solution thereof, comprising bringing a dilute aqueous HCI solution into contact with a substantially water-immiscible extractant, the extractant comprising an oil soluble amine, which amine is substantially water insoluble both in free and in salt form; an oil soluble weak organic acid having a pKa above 3, which acid is substantially water insoluble both in free and in salt form; and a solvent for the amine and organic acid; whereupon HCI selectively transfers to the extractant to form an HCI-carrying extractant, and treating the HCI-carrying extractant to obtain gaseous HCI. Also provided is the extractant composition.02-03-2011
20110152514DECOMPOSITION OF MATERIALS CONTAINING CARBOHYDRATES USING INORGANIC CATALYSTS - The invention relates to a method for depolymerizing materials containing carbohydrates comprising the following steps: (a) treating a material containing carbohydrates with an inorganic catalyst in order to release defined monomeric or oligomeric building blocks from the material containing the carbohydrates; and (b) separating the defined monomeric or oligomeric building blocks produced in step (a) from the rest of the carbohydrate-containing material. Preferably, the inorganic catalyst used in step (a) comprises tectosilicates, phyilosilicates or hydrotalcites and more preferably zeolites or bentonites. The carbohydrate-containing material further comprises preferably LCB and the defined monomeric or oligomeric building blocks are preferably glucoses, xyloses, arabinoses and oligomers thereof. Other aspects of the invention refer to the use of solution promoters in combination with the inorganic catalyst.06-23-2011
20100004437Chemical Transformation of Lignocellulosic Biomass into Fuels and Chemicals - A method for converting a carbohydrate to a furan in a polar aprotic solvent in the presence of a chloride, bromide, or iodide salt or a mixture thereof and optionally in the presence of an acid catalyst, a metal halide catalyst and/or an ionic liquid (up to 40 wt %). The method can be employed in particular to produce furfural or 5-hydroxymethylfurfural.01-07-2010
20090275744PRODUCTION OF SUGAR ESTERS FROM VINYL FATTY ACID ESTERS - A sugar ester product is manufactured from sugar and vinyl fatty acid. Sugar is first dissolved in dimethyl sulfoxide with a metal carbonate catalyst. A vinyl fatty acid ester is added to the sugar mixture; a sugar ester product and acetaldehyde are formed. Vacuum can be used to remove acetaldehyde to drive the reaction towards completion. Depending on the sugar to vinyl fatty acid ester ratio, one can obtain a reaction yield greater than 90% with a monoester content of 90%. DMSO is then recovered by vacuum distillation. The crude product is dissolved in brine; sucrose stearate along with vinyl stearate and traces of sucrose are extracted by adding isobutanol. The isobutanol phase is separated from the aqueous phase and concentrated. Spray drying steps are carried out to remove residual solvents and vinyl stearate. The product is a white powder that meets FDA specifications for sucrose esters.11-05-2009
20090259035Method for producing recombinant RNase A - The invention relates to a method for producing recombinant RNase A in 10-15-2009
20090076259Fluoridation Process - The invention relates to an improved process for the fluoridation of sugar derivatives in which a controlled amount of water is present in the solvent.03-19-2009
20120016115APPARATUS FOR MANUFACTURING GEL PARTICLE AND METHOD FOR MANUFACTURING GEL PARTICLE - An apparatus for manufacturing gel particle according to an embodiment of the invention is an apparatus for manufacturing gel particle of a first liquid and a second liquid by delivering the droplets of the first liquid including a gel particle-forming material to the second liquid that becomes the gel particle through reactions, and includes: a container that contains the second liquid; a flow mechanism unit that makes the second liquid flow in a spiral manner in the container; a tank that contains the first liquid; and an ejection mechanism unit that is communicated with the tank and is provided with a nozzle plate having a plurality of nozzles formed in a disposition that is along an array direction in which the liquid droplets of the first liquid are ejected on the second liquid made to flow in a spiral manner.01-19-2012
20120309958PROCESS FOR PREPARATION OF B-GLYCOSIDE COMPOUNDS - The invention provides a process for producing a β-glycoside compound represented by formula (3), characterized in that the process includes causing to react a cyclic alkene compound represented by formula (1) or (2) with a nucleophile in the presence of a transition metal catalyst.12-06-2012
20090131653Generation of Phosphorus Oxychloride as by-Product from Phosphorus Pentachloride and DMF and its Use for Chlorination Reaction by Converting Into Vilsmeier-Haack Reagent - A process is described wherein after formation of first crop of Vilsmeier-Haack reagent by reacting Phosphorus Pentachloride with N,N-dimethylformamide to form a first crop of Vilsmeier reagent as insoluble crystals, a by-product of this reaction, the Phosphorus Oxy-Chloride, reacts with N,N-dimethylformamide to give a second crop of Vilsmeier reagent. This second crop of Vilsmeier reagent is soluble in DMF. This process makes it possible to double the yield of chlorinated substrate, such as sucrose-6-acetate or sucrose-6-benzoate, from the same quantity of Phosphorus Pentachloride.05-21-2009
20120172588CATALYTIC BIOMASS DECONSTRUCTION - The present invention provides processes for catalytically converting biomass to oxygenated compounds suitable for use in bioreforming processes.07-05-2012
20120232264SYSTEM AND METHOD FOR TREATING BIOMASS - A biomass treatment apparatus (A) is constituted by a pressurized hot water reaction apparatus (09-13-2012
20110003983Method of obtaining conformational polymorph of sucrose - A new sucrose is obtained through the present invention. The new sucrose has a lower solubility and a lower melting point. Thus, the new sucrose has a higher stability. The new sucrose obtained through the present invention can be used as an added functionality excipient of drug in pharmaceutical industry. And the new sucrose can also be used in sugar and food industries.01-06-2011
20110160447METHOD FOR SYNTHESIZING ACROLEIN - An object of the present invention is to provide a method for commercially manufacturing acrolein in a large flow rate by making supercritical water and an acid interact with glycerin, wherein by efficiently mixing high-concentration glycerin and supercritical water with each other, the method is made capable of making the synthesis stably proceed with a high yield while the occlusion and abrasion of the pipes and devices due to the generation of by-products are being suppressed. The method for synthesizing acrolein of the present invention is a method for synthesizing acrolein by making supercritical water and an acid interact with glycerin, the method using a reaction apparatus including: a cylindrical mixing flow path for mixing a fluid including glycerin and a fluid including supercritical water with each other; a first inlet flow path, disposed offset from the central axis of the mixing flow path, for making the fluid including glycerin flow into the mixing flow path; and a second inlet flow path, disposed offset from the central axis of the mixing flow path, for making the fluid including supercritical water flow into the mixing flow path, wherein the first inlet flow path and the second inlet flow path are each provided in a plurality of numbers in such a way that the first inlet flow paths and the second inlet flow paths are alternately arranged so as to encircle the central axis of the mixing flow path.06-30-2011
20080227972Decomposition method of cellulose and production method of glucose - A method for decomposing cellulose to be contained in a cellulose raw material is provided. A pulverized cellulose based biomass is enclosed in a pressure closed vessel, and a sodium hydroxide aqueous solution having a concentration of 5%, pure water and 5 g of nickel oxyhydroxide obtained by solid-solving therein at least one kind of zinc, aluminum, magnesium, calcium, manganese, cobalt, copper and tin relative to nickel are added to prepare a catalytic reaction solution. Next, the catalytic reaction solution for decomposing cellulose by using nickel oxyhydroxide as a catalyst is subjected to a decomposition reaction of cellulose while stirring by using a stirring blade and heating at a temperature rising rate of 5° C./min. The reaction is carried out under autogenous pressure (saturated vapor pressure of water) in the reactor. After the temperature of the catalytic reaction solution has reached a prescribed temperature, the resulting catalytic reaction solution is heated for one hour and then cooled to room temperature at a rate of about 3° C./min.09-18-2008
20080227971Deacylation of sucralose-6-acylates - A method of making sucralose includes maintaining a solution of a sucralose-6-acylate in an aqueous solvent at a temperature in a range from −20° C. to 20° C. and at a pH of at least 12.2 and less than 14.0 for a period of time sufficient to deacylate substantially all of the sucralose-6-acylate. The method may employ purified sucralose-6-acylate as the starting material, or the sucralose-6-acylate may be present in a quenched reaction mixture resulting from chlorination of a sucrose-6-acylate. The quenched reaction mixture may be exposed to deacylation conditions either before or after removal of a tertiary amide that may be present in it. Sucralose is subsequently recovered to complete the process.09-18-2008
20130178617CATALYTIC CONVERSION OF CELLULOSE TO FUELS AND CHEMICALS USING BORONIC ACIDS - Methods and catalyst compositions for formation of furans from carbohydrates. A carbohydrate substrate is heating in the presence of a 2-substituted phenylboronic acid (or salt or hydrate thereof) and optionally a magnesium or calcium halide salt. The reaction is carried out in a polar aprotic solvent other than an ionic liquid, an ionic liquid or a mixture thereof. Additional of a selected amount of water to the reaction can enhance the yield of furans.07-11-2013
20130158254CHEMICAL TRANSFORMATION OF LIGNOCELLULOSIC BIOMASS INTO FUELS AND CHEMICALS - A method for converting a carbohydrate to a furan in a polar aprotic solvent in the presence of a chloride, bromide, or iodide salt or a mixture thereof and optionally in the presence of an acid catalyst, a metal halide catalyst and/or an ionic liquid (up to 40 wt %). The method can be employed in particular to produce furfural or 5-hydroxymethylfurfural.06-20-2013
20090306365Hydrogenolysis of Sugar Feedstock - A process for the hydrogenolysis of a sugar feedstock in the presence of a catalyst comprising: (a) ruthenium or osmium; and (b) an organic phosphine; and wherein the hydrogenolysis is carried out in the presence of water and at a temperature of greater than 150° C.12-10-2009
20090292117PREPARATION METHOD OF 2-DEOXY-L-RIBOSE - A method of preparing 2-deoxy-L-ribose represented by the following formula I is disclosed. The preparation method includes the steps of: treating L-arabinose with an alcohol solvent in the presence of an acid to prepare 1-alkoxy-L-arabinopyranose; allowing the prepared 1-alkoxy-L-arabinopyranose to react with acyl chloride so as to prepare 1-alkoxy-2,3,4-triacyl-L-arabinopyranose; brominating the alkoxy group of the prepared 1-alkoxy-2,3,4-triacyl-L-arabinopyranose to prepare a 1-bromo-2,3,4-triacyl compound; allowing the prepared compound to react with zinc in the presence of ethyl acetate and an organic base so as to prepare glycal; treating the glycal with an alcohol solvent in the presence of an acid to prepare 1-alkoxy-2-deoxy-3,4-diacyl-L-ribopyranose; treating the prepared 1-alkoxy-2-deoxy-3,4-diacyl-L-ribopyranose with a base to prepare 1-alkoxy-2-deoxy-L-ribopyranose; and hydrolyzing the prepared 1-alkoxy-2-deoxy-L-ribopyranose in the presence of an acid catalyst.11-26-2009

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