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671results about "Preparation from heterocyclic compounds" patented technology
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Synthesis of liquid fuels and chemicals from oxygenated hydrocarbons
ActiveUS20080216391A1Organic compound preparationHydrocarbon from oxygen organic compoundsFuranLiquid fuel
Processes and reactor systems are provided for the conversion of oxygenated hydrocarbons to hydrocarbons, ketones and alcohols useful as liquid fuels, such as gasoline, jet fuel or diesel fuel, and industrial chemicals. The process involves the conversion of mono-oxygenated hydrocarbons, such as alcohols, ketones, aldehydes, furans, carboxylic acids, diols, triols, and / or other polyols, to C4+ hydrocarbons, alcohols and / or ketones, by condensation. The oxygenated hydrocarbons may originate from any source, but are preferably derived from biomass.
Owner:VIRENT
Synthesis of liquid fuels and chemicals from oxygenated hydrocarbons
ActiveUS20080300435A1Oxygen-containing compound preparationLiquid hydrocarbon mixture productionFuranLiquid fuel
Processes and reactor systems are provided for the conversion of oxygenated hydrocarbons to hydrocarbons, ketones and alcohols useful as liquid fuels, such as gasoline, jet fuel or diesel fuel, and industrial chemicals. The process involves the conversion of mono-oxygenated hydrocarbons, such as alcohols, ketones, aldehydes, furans, carboxylic acids, diols, triols, and / or other polyols, to C4+ hydrocarbons, alcohols and / or ketones, by condensation. The oxygenated hydrocarbons may originate from any source, but are preferably derived from biomass.
Owner:VIRENT
Synthesis of liqiud fuels and chemicals from oxygenated hydrocarbons
ActiveUS20080300434A1Oxygen-containing compound preparationHydrocarbon purification/separationFuranCarboxylic acid
Processes and reactor systems are provided for the conversion of oxygenated hydrocarbons to hydrocarbons, ketones and alcohols useful as liquid fuels, such as gasoline, jet fuel or diesel fuel, and industrial chemicals. The process involves the conversion of mono-oxygenated hydrocarbons, such as alcohols, ketones, aldehydes, furans, carboxylic acids, diols, triols, and / or other polyols, to C4+ hydrocarbons, alcohols and / or ketones, by condensation. The oxygenated hydrocarbons may originate from any source, but are preferably derived from biomass.
Owner:VIRENT
Production of glycolaldehyde by hydrous thermolysis of sugars
ActiveUS7094932B2Increase productionMinimize formationOrganic compound preparationConfectioneryGlucose polymersD-Glucose
The present invention provides a method for the production of glycolaldehyde with high specificity. The hydrous thermolysis consists of the spraying of aqueous sugar solutions containing from 25 to 80% of water but preferably 30 to 60% water, as a fine mist into a reactor held at the between 500 and 600° C., but preferably between 520 and 560° C. and the condensation of the resulting vaporous product in a surface condenser with optional heat recovery. The residence time of the vaporous product in the reactor should be in the range 0.1–5 seconds, but preferably in the range 0.5 to 2 seconds. Aldose monomeric sugars, preferably glucose (also known as dextrose), are preferred for use in the aqueous solution. The yield of glycolaldehyde in the condensed liquid is minimum 50% by weight of the sugar fed for glucose solutions.
Owner:KERRY GRP SERVICES INT
Multypodal tethers for high-density attachment of redox-active moieties to substrates
InactiveUS20070108438A1Increase charge storage densityHigh charge densityMaterial nanotechnologyNanoinformaticsHigh densityCombinatorial chemistry
This invention provides redox-active molecules attached to polypodal (e.g., bipodal, tripodal, quadrapodal, pentapodal, etc.) tethers that can be used for attachment of the redox-active molecules to a substrate (e.g., an electrode). The tethered redox-active molecules are useful for the fabrication of memory devices.
Owner:RGT UNIV OF CALIFORNIA +2
Method for preparing aromatic hydrocarbon and cyclopentenone from biomass derivative gamma-valerolactone by catalytic conversion
InactiveCN104230615AGood dehydrogenation performanceInhibition of partial polymerizationHydrocarbonsPreparation from heterocyclic compoundsLiquid productReaction temperature
The invention relates to a method for preparing aromatic hydrocarbon and cyclopentenone from biomass derivative gamma-valerolactone by catalytic conversion, which comprises the following steps: (1) using biomass derivative gamma-valerolactone as a raw material, which is prepared by carrying out hydrogenation reaction on levulinic acid; (2) introducing one or more transition metals into a zeolite molecular sieve, and preparing a reaction catalyst at the reaction temperature of 350-550 DEG C by using a fixed bed or fluid bed as a reactor; (3) in an inert or reducing atmosphere, carrying out contact reaction on the raw material gamma-valerolactone and catalyst under the reaction pressure of 0-10 MPa; and (4) after the pyrolysis gas is condensed, collecting the liquid product in the condensation receiver, thereby obtaining the aromatic hydrocarbon product (of benzene, toluene and xylene) and the cyclopentenone product. By using the renewable biomass derivative gamma-valerolactone as the raw material, the method has the advantage of milder reaction conditions, and the catalyst is simple to prepare and easy to recover and reuse.
Owner:湖南清欣绿色环保有限公司
Prodrugs of GABA analogs, compositions and uses thereof
Owner:XENOPORT
Alkenyl compound having a negative delta epsilon value, liquid crystal composition, and liquid crystal display device
InactiveUS20040065866A1Low viscosityImprove solubilityLiquid crystal compositionsSilicon organic compoundsLiquid crystallineDithiane
Owner:JNC CORP
Ketones as precursors of active compounds
A compound of formula wherein Y represents a pyridyl group, or a phenyl group of formula wherein R3 represents a hydrogen atom, a CF3 group or an alkoxy group, R4 represents a hydrogen atom, an alkyl group, or a CF3 group, R5 represents a hydrogen atom, an alkyl group, a CF3 group or an alkoxy group, and R1 and R2 are the substituents of a terminal alkene of formula wherein R1 represents an alkyl or alkylene group, a mono- or poly-cycloalkyl group, or a phenyl group that optionally includes one or several hetero-atoms of oxygen, nitrogen, phosphorous or sulfur; R2 represents a hydrogen atom, an alkyl or alkylene group, a mono- or poly-cycloalkyl group, or a phenyl group that optionally includes one or several hetero-atoms of oxygen, nitrogen, phosphorous and sulfur. This compound is capable of releasing, upon an exposure to light, an active compound such as a perfume and can be advantageously used in the treatment of any surface in order to perfume it through the controlled release of a perfumed molecule.
Owner:FIRMENICH SA
Process for the continuous production of ethylene glycol from carbohydrates
ActiveUS20150329449A1Organic compound preparationOxygen compounds preparation by reductionHydrogenPropylene glycol
A continuous process for converting carbohydrates to ethylene and propylene glycol. The carbohydrates are mixed with water and passed through a reactor at a temperature that hydrolyzes the carbohydrate mixture at least partially to monosaccharides. The reactor has a first zone comprising a retro-aldol catalyst and a second zone comprising a reducing catalyst. The aldose is converted in the first zone into glycolaldehyde by the retro-aldol catalyst and the glycolaldehyde, in the presence of hydrogen, is converted to ethylene glycol in the second zone of the reactor. The reaction products are removed from the reactor and the ethylene glycol is recovered. The selectivity to propylene glycol can be enhanced via feeding ketose as the carbohydrate.
Owner:TECH PRECESS TECH INC
N-doped porous carbon supported metal catalyst, and preparation method and application thereof
ActiveCN106622327ARich pore structureLarge specific surface areaPhysical/chemical process catalystsPreparation from heterocyclic compoundsHydrogenAlcohol
The invention relates to a catalyst which using N-doped porous carbon as a carrier to support metal. The catalyst is composed of 0.1wt%-30wt% of metal particles and 70wt%-99.9wt% of bio-N-doped porous carbon carrier, and can be used for catalyzing aqueous phase hydrogenation of bio-furfural to highly selectively prepare furfural alcohol or cyclopentanone. The catalyst uses the raw materials which are renewable resources, wide in distribution, green and environmental, simple and easy to obtain, rich in resource, low in cost, free from inactivation when recycled for more than 50 times, and stable to air, water and heat. For example, in reaction of catalyzing the hydrogenation of the furfural to prepare the furfural alcohol, conversion rate of the supported metal catalyst can reach 100% and selectivity of the furfural alcohol is larger than 99% in an aqueous phase system.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI +1
Alkenyl compound having a negative Deltaepsilon value, liquid crystal composition, and liquid crystal display device
InactiveUS6692657B1Low viscosityImprove solubilityLiquid crystal compositionsSilicon organic compoundsCrystallographySolubility
Liquid crystalline compounds having a large negative Delta∈ low viscosity, a large K33 / K11 value, a small Delta∈ / Delta⊥ and mutually excellent solubility even at low temperature, compositions containing at least one of the compounds and liquid crystal display devices containing such a liquid crystal compositions are disclosed.
Owner:JNC CORP
Novel intermediate for synthesizing treprostinil diethanolamine and method for preparing the same
ActiveUS20160152548A1High optical purityHigh purityOrganic compound preparationPreparation by ester-hydroxy reactionCombinatorial chemistryEthanolamine synthesis
The present invention relates to a method for treprostinil diethanolamine synthesis. The present invention also relates to a novel intermediate used in the method for treprostinil diethanolamine synthesis. The novel intermediate is shown in the following formula (II):wherein R1 and R2 are described in the description.
Owner:EVERLIGHT CHEMICAL INDUSTRIAL CORPORATION
Molybdenum-containing Acidic Catalysts to Convert Cellulosic Biomass to Glycolic Acid
ActiveUS20130281733A1Greener and more cost-efficientOrganic compound preparationCarboxylic compound preparationCelluloseHeteropoly acid
Embodiments of the present invention include methods and compositions related to catabolic conversion of cellulosic biomass to glycolic acid using molybdenum-containing acidic catalysts. The invention includes the use of heteropoly and isopoly acids and salts as the molybdenum-containing multi-functional catalysts for biomass conversion. In embodiments of the invention, the reactions employ successive hydrolysis, retro-aldol fragmentation, and selective oxidation in a noble metal-free system.
Owner:KING ABDULLAH UNIV OF SCI & TECH
Process for preparing ketones from epoxides
ActiveUS9000223B2Level of technical complexityHigh yieldOrganic compound preparationMetal/metal-oxides/metal-hydroxide catalystsHydrogenKetone
Owner:EVONIK OPERATIONS GMBH
Method for preparing cyclopentanone and/or cyclopentanol by furfural or furfuryl alcohol
InactiveCN102807483AIncrease productionImprove conversion rateOrganic compound preparationHydroxy compound preparationAlcoholCyclopentanol
The invention provides a method for preparing cyclopentanone and / or cyclopentanol by furfural or furfuryl alcohol. The method includes the following steps of firstly, mixing furfural or furfuryl alcohol with solvent according to proportion; secondly, adding catalyst with hydrogenating function into the mixture in the first step; and thirdly, reacting in the reducing atmosphere to obtain cyclopentanone and / or cyclopentanol. The method for preparing cyclopentanone and / or cyclopentanol by furfural or furfural alcohol is high in yield of the cyclopentanone and / or cyclopentanol, and further, is simple in process, convenient to operate, mild in reaction conditions, no carbon deposition is caused during the whole reaction, the catalyst is low in cost and easy to obtain and can be reused without lowering activity.
Owner:UNIV OF SCI & TECH OF CHINA
Method for preparing supported catalyst for preparing cyclopentanone with furfural through hydrogenation
ActiveCN103111299AHigh catalytic efficiencyReduce usageMetal/metal-oxides/metal-hydroxide catalystsPreparation from heterocyclic compoundsCatalytic effectAdipic acid
The invention discloses a method for preparing a supported catalyst for preparing cyclopentanone with furfural through hydrogenation. An activated carbon nano tube is adopted as a carrier, and loading metal comprises Ni, Cu, Co and Mg. The method for preparing the catalyst adopts a double dropwise adding and coprecipitation method, thus preparing the catalyst with high capacity and improving the catalytic effect of the catalyst; the preparation condition for the catalyst is easy to realize; and the range of raw materials for preparation is wide, precursors of all components are general and the raw materials for preparation can be selected flexibly according to market price. The catalyst prepared by the method has higher catalytic activity, the furfural conversion efficiency is above 96.6%, and the cyclopentanone selectivity is above 95.4%, so that the catalyst can be used for preparing the cyclpentanone with the furfural as a raw material, the problem that cyclopentanone self polymerization is easy to occur so as to generate a material with high boiling point in the process of generation of cyclopentanone by taking adipic acid as a raw material is solved, and the product yield is improved.
Owner:SOUTHEAST UNIV
Processes for Converting Biomass-Derived Feedstocks to Chemicals and Liquid Fuels
ActiveUS20140273118A1Preparation by OH group eliminationLiquid hydrocarbon mixture productionHydrogenHydrolysate
The present invention provides processes, methods, and systems for converting biomass-derived feedstocks to liquid fuels and chemicals. The method generally includes the reaction of a hydrolysate from a biomass deconstruction process with hydrogen and a catalyst to produce a reaction product comprising one of more oxygenated compounds. The process also includes reacting the reaction product with a condensation catalyst to produce C4+ compounds useful as fuels and chemicals.
Owner:VIRENT
Synthetic process of 1-chloro-cyclopropanecarbonyl chloride
ActiveCN104292089ASmooth process connectionReduce unit operationsOrganic compound preparationPreparation from heterocyclic compoundsSulfonyl chlorideChloride
The invention discloses a synthetic process of 1-chloro-cyclopropanecarbonyl chloride, which belongs to the technical field of fine chemical processes. The process is implemented by taking alpha-acetyl-gamma-butyrolactone and sulfonyl chloride as raw materials through the steps of chlorinating, ring cleavage, cyclization, and re-chlorinating, so that a target product is obtained. The synthetic process is implemented by taking cheap industrial chemicals as raw materials and reaction reagents, and by using a single solvent system, a smooth process connection is achieved, so that the reaction yield is improved, the process operation is simplified, the cost of raw materials is reduced, and the cost of production is lowered.
Owner:DALIAN JOIN KING FINE CHEM CO LTD
Decarboxylation of levulinic acid to ketone solvents
ActiveUS20140171688A1Low production costCellsOrganic compound preparationPropanoic acidKetone solvents
Ketones, specifically Methyl ethyl ketone (“MEK”) and octanedione, may be formed from six carbon sugars. This process involves obtaining a quantity of a six carbon sugar and then reacting the sugar to form levulinic acid and formic acid. The levulinic acid and formic acid are then converted to an alkali metal levulinate and an alkali metal formate (such as, for example, sodium levulinate and sodium formate.) The alkali metal levulinate is placed in an anolyte along with hydrogen gas that is used in an electrolytic cell. The alkali metal levulinate within the anolyte is decarboxylated to form MEK radicals, wherein the MEK radicals react with hydrogen gas to form MEK, or MEK radicals react with each other to form octanedione. The alkali metal formate may also be decarboxylated in the cell, thereby forming hydrogen radicals that react with the MEK radicals to form MEK.
Owner:ENLIGHTEN INNOVATIONS INC
Method for preparing cyclopentanone by taking biomass resource as raw material
InactiveCN105330523AReduce yieldFew stepsMolecular sieve catalystsChemical industryFixed bedFurfural
The invention belongs to the technical field of biomass conversion utilization, and concretely relates to a method for preparing cyclopentanone by taking biomass resource as a raw material. The method comprises taking furfural coming from biomass as the raw material, taking a hydrogen-containing gas as a reducing agent, and in the presence of a metal supported type catalyst, performing hydrogenation rearrangement reaction in a high-pressure reaction kettle or a fixed bed reactor, so as to obtain cyclopentanone in one step, wherein the carrier of the metal supported type catalyst is selected from Nb2O5, H-ZSM-5 molecular sieve, HY molecular sieve, Fe2O3, ZrO2, Al2O3, SiO2, CeO2, MgO, active carbon, and TiO2 in various crystal forms, the active composition is selected from Au, Pt, Ru, Rh, Pd, Ir, Ni and Cu, and the active composition load capacity is 0.1-5% of the catalyst. The method is mild in reaction technological conditions, and cheap and easily-available in raw materials, is capable of realizing quantitative conversion of furfural to cyclopentanone, and belongs to an environment-friendly green chemical technology.
Owner:FUDAN UNIV
Novel method for the conversion of cellulose and related carbohydrate materials to low-molecular-weight compounds
ActiveUS20110137085A1Eliminate needOrganic compound preparationPreparation by OH group eliminationCelluloseChemical compound
Methods of converting cellulose or related biorenewable carbohydrate materials into high-value chemical compounds. The methods provide a means of converting low-cost materials such as cellulose and biomass into high yields of compounds such as ethylene glycol, propylene glycol, glycerin, methanol, hydroxyacetone, glycolaldehyde and dihydroxyacetone.
Owner:IOWA STATE UNIV RES FOUND
Methods for treating neurodegenerative diseases
InactiveUS20120172453A1Increasing neurite growthHigh expressionBiocideNervous disorderPharmaceutical drugAntiulcer drug
This invention relates to the 5-cis and 5-trans isomers of geranylgeranyl acetone, preferably such synthetic isomers, and pharmaceutical compositions containing such isomers. Other aspects of this invention relate to the use of geranylgeranyl acetone and its isomers in methods for inhibiting neural death, increasing neural activity, and increasing axon growth and cell viability. Geranylgeranyl acetone is a known anti-ulcer drug used commercially and in clinical situations. GGA has also been shown to exert cytoprotective effects on a variety of organs, such as the eye, brain, and heart.
Owner:COYOTE PHARMA
Intermediate for synthesizing treprostinil diethanolamine and method for preparing the same
ActiveUS9505704B2Improve the tedious and lengthy synthetic processHigh optical purityOrganic compound preparationCarboxylic acid esters preparationCombinatorial chemistryEthanolamine synthesis
Owner:EVERLIGHT CHEMICAL INDUSTRIAL CORPORATION
Process for liquefying a cellulosic material and its products
ActiveUS20110277378A1Increased degree of liquefactionEasy to prepareOther chemical processesOrganic compound preparationCelluloseBiofuel
Owner:SHELL USA INC
Efficient and Recyclable Heterogeneous Nanocatalysts
Owner:RUTGERS THE STATE UNIV
Preparation process of perfluoro-2-methyl-3-pentanone
ActiveCN103787854AHigh selectivityHigh yieldPreparation from heterocyclic compoundsGas phaseReaction rate
The invention discloses a preparation process of perfluoro-2-methyl-3-pentanone, belonging to the technical field of preparation methods of perfluoroketone compounds in the field of organofluorine chemistry. The perfluoro-2-methyl-3-pentanone is obtained by performing an epoxidation reaction and a catalytic isomerization reaction on perfluoro-2-methyl-pentene serving as a raw material in sequence. The preparation process comprises the following steps: I, in a continuous liquid phase epoxidation reaction, mixing a corresponding proportion of aprotic polar solvent into a sodium hypochlorite solution to promote the reaction, increase the raw material conversion ratio and increase the reaction rate at least by 2-3 percent, wherein the step is characterized by easiness and convenience in operation, low equipment requirement and high reaction equipment efficiency; II, performing a continuous gas phase catalytic reaction, wherein the application of a solvent is effectively avoided, the cost and environmental pollution are lowered, the problems of the need of separating the solvent from a product in post-treatment, difficulty in recycling and treating the solvent and a catalyst, and the like are solved, and the product can be refined and purified more easily. The preparation process has the advantages of high process automation degree, easiness and convenience in operation, high product purity and high reaction equipment efficiency, and is suitable for industrial application.
Owner:浙江诺亚氟化工有限公司
Prodrugs of GABA analogs, compositions and uses thereof
Owner:XENOPORT
Preparation method of 1-(4-chlorophenyl)-2-cyclopropyl-1-acetone and intermediate thereof as well as preparation method of intermediate
ActiveCN102603508ASimple processHigh product contentOrganic compound preparationPreparation from heterocyclic compoundsPhenyl groupMedicinal chemistry
The invention discloses a preparation method of 1-(4-chlorophenyl)-2-cyclopropyl-1-acetone (I) and an intermediate thereof as well as the preparation method of the intermediate. The preparation method of 1-(4-chlorophenyl)-2-cyclopropyl-1-acetone (I) comprises the following steps of: carrying out Darzen condensation reaction on alpha-halo-p-chlorophenylacetate (II) and acetylcyclopropane (III) as raw materials in the presence of alkaline to prepare glycidic ester (IV); and carrying out basic hydrolysis on the obtained glycidic ester (IV) to be converted to a corresponding glycerate (V), and further carrying out decarboxylation reaction under acidic conditions to prepare 1-(4-chlorophenyl)-2-cyclopropyl-1-acetone (I) as a bactericide cyproconazole intermediate. The preparation method is simple in process, the three-step reaction can be realized through continuous operation or 'one-pot method'; and the product 1-(4-chlorophenyl)-2-cyclopropyl-1-acetone (I) is high in content and suitable for large-scale development.
Owner:JIANGSU CHENGYANG GROP SCI CO LTD
Apparatus and method for carrying out multiple reactions
InactiveUS8227635B2Organic compound preparationOrganic chemistry methodsChemical reactionPhotochemistry
The invention provides methods and an apparatus useful for site-isolating reagents or catalysts during chemical reactions. The methods and apparatus are useful for carrying out cascade or domino reactions.
Owner:UNIV OF IOWA RES FOUND
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