1844results about "Carbonyl compound preparation by oxidation" patented technology

The present invention is a light emitting device material characterized by containing an anthracene compound represented by the following general formula (1) or general formula (3), and the present invention allows a light emitting device having high luminous efficiency and excellent durability.

(R¹ to R¹⁰ are a hydrogen atom, alkyl group, cycloalkyl group, heterocyclic group or the like. At least one of the R¹ to R¹⁰ is a substituent represented by the following general formula (2).)

(R¹¹ to R¹⁸ are a hydrogen atom, alkyl group and cycloalkyl group. X is an oxygen atom or sulfur atom, and Y is a single bond; arylene group or heteroarylene group. Any one of the R¹¹ to R¹⁸ is used for linking with Y, and α is used for linking with the anthracene skeleton.)

(R¹⁹ to R³⁷ are a hydrogen atom, alkyl group, cycloalkyl group, heterocyclic group or the like. n is 1 or 2. A is a heteroarylene group or arylene group. Any one of the R¹⁹ to R²⁷ and any one of the R²⁸ to R³⁷ are used for linking with A.)

The present invention provides a process for producing nano graphene platelets (NGPs) that are both dispersible and electrically conducting. The process comprises: (a) preparing a pristine NGP material from a graphitic material; and (b) subjecting the pristine NGP material to an oxidation treatment to obtain the dispersible NGP material, wherein the NGP material has an oxygen content no greater than 25% by weight. Conductive NGPs can find applications in transparent electrodes for solar cells or flat panel displays, additives for battery and supercapacitor electrodes, conductive nanocomposite for electromagnetic wave interference (EMI) shielding and static charge dissipation, etc.

Cationic lipids, cationic lipid based drug delivery systems, ways to make them and methods of treating diseases using them are disclosed.

The present invention relates to a method of producing methanol from a methane source by oxidizing methane under conditions sufficient to a mixture of methanol and formaldehyde while minimizing the formation of formic acid and carbon dioxide. The oxidation step is followed by treatment step in which formaldehyde is converted into methanol and formic acid which itself can further be converted into methanol via catalytic hydrogenation of intermediately formed methyl formate.

The invention relates to polyketone compounds and the at least partially hydrogenated products thereof, the use of said polyketone compounds and/or the at least partially hydrogenated products thereof as plasticizers, processes of making polyketone compounds and the at least partially hydrogenated products thereof, compositions comprising the polyketone compounds and/or the at least partially hydrogenated products thereof, and to articles formed from products of the invention.

Cationic lipids, cationic lipid based drug delivery systems, ways to make them and methods of treating diseases using them are disclosed.

Alcohols, ethers, aldehydes, and olefins are manufactured from alkanes by mixing an alkane and a halogen selected from the group including chlorine, bromine, and iodine in a reactor to form alkyl halide and hydrogen halide. The alkyl halide only or the alkyl halide and the hydrogen halide are directed into contact with metal oxide to form an alcohol and/or an ether, or an olefin and metal halide. The metal halide is oxidized to form original metal oxide and halogen, both of which are recycled.

An improved method for the selective vapor phase oxidation of propylene to acrolein in a recirculating solids reactor system using a bismuth molybdate multimetal oxide involving specific reactant concentrations (preferably 5 mol % to 30 mol % propylene, 0 to 20 mol % oxygen, and the remainder inert gas), particle size (1 to 300 micrometers), temperature (250 to 450.degree. C.) and gas (1 to 15 seconds) and solids (2 to 60 seconds) residence times. Such a process leads to improved selectivity and propylene conversion.

The present invention relates to methods for use in producing epothilones and analogs and derivatives thereof. A general method according to the present invention broadly comprises performing an aldol condensation of a first compound with a second compound thereby to form a third compound selected from the formulas:

and stereoisomers thereof, and performing a macrolactonization of the third compound. The present invention also provides chemical compounds, and methods for producing such chemical compounds, that are useful in producing epothilones and analogs and derivatives thereof.

The invention relates to a new process in which under the catalytic action of metal porphyrin the cyclohexane can be selectively oxdated by air and made into cyclohexanol and cyclohexanone. Under the condition of 2-10 atm air, reaction temp. is 125-150 deg.C, it selects and uses micro-oxo double metal porphyrin and single metal porphyrin or their solid carrier as main catalyst, and uses transition metal salt or oxide as co-catalyst, the metal porphyrin can high-effectively and high-selectively catalyze oxidation of cyclohexane by using air in the biological concentratino as biological enzyme. The dose of metal porphyrin is small and said metal porphyrin can be repeatedly used, and said catalyst dose also is small, its catalystic effect is good, said catalyst can be used for making homogeneous catalysis, and after it is solid-carried, it also can be used for making heterogeneous catalysis.

The invention discloses a technology for preparing organic fuel through directly converting carbon dioxide by using sunlight and a photothermal catalyst. Sunlight is utilized to supply light and heat for the synthesis and catalytic process of the photothermal catalyst, and the photothermal catalyst can simultaneously absorb and utilize ultraviolet light, visible light and infrared light parts in sunlight, so that a phtothermal catalytic reaction is induced to prepare the organic fuel through reducing carbon dioxide by using hydrogen. The photothermal catalyst comprises the following components: an active component which is a 2-30 nano-scale non-stoichiometric oxide belonging to a VIII-family element in a transition family and a carrier material which is an oxide or carbon material with the specific surface area of 30-1000cm<2>/g, alkaline resistance, high heat conductivity or photocatalytic activity. A steeping and in-situ sintering method or photodepositing and in-situ sintering method is used as a synthesis method so that the energy consumption is low, and the photothermal catalyst has high activity and long service life by using a solar-assisted in-situ sintering technology. The technology for preparing organic fuel through directly converting carbon dioxide by using sunlight and the photothermal catalyst is low in energy consumption in the catalytic process, high in organic fuel production efficiency and stable in catalyst activity.

Feeds comprising methanol, dimethyl ether or a mixture of the two are oxidized by contacting the feed with an oxygen-containing gas and a supported heteropolyacid catalyst containing molybdenum or molybdenum and vanadium. The primary products are methylal (dimethoxymethane) and methyl formate. Production of dimethyl ether from methanol can be inhibited by partial deactivation of acid sites on the Keggin catalyst.

A method is disclosed for preparing crystalline titanosilicate zeolite TS-1 from a reaction mixture containing only sufficient water to produce zeolite TS-1. In one embodiment, the reaction mixture is self-supporting and may be shaped if desired. In the method, the reaction mixture is heated at crystallization conditions and in the absence of an added external liquid phase, so that excess liquid need not be removed from the crystallized product.

The present invention relates to a process for producing phenol and a ketone of general formula R¹COCH₂R² (I), in which R¹ and R² each independently represent an alkyl group having from 1 to 4 carbon atoms, said process comprising: (a) providing an alkylbenzene feedstock comprising

(i) an alkylbenzene of general formula (II)

in which R¹ and R² have the same meaning as in formula (I) and

(ii) at least one structural isomer of said alkylbenzene of formula (II) in an amount of at least 0.7% of the weight of alkylbenzene of formula (II),

(b) submitting the alkylbenzene feedstock to oxidation conditions in the presence of oxygen and in the presence of a cyclic imide of formula (III):

in which X represents a carbonyl (CO) group or a sulfonyl (SO₂) group, n is 0, 1, 2, 3 or 4, R³ is one or several groups selected from a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an amino group and R⁴ is a hydrogen atom, an alkaline metal cation or an alkaline earth metal cation, or in the presence of N,N′,N″-trihydroxyisocyanuric acid (THICA), to produce a product comprising a hydroperoxide of general formula (IV)

in which R¹ and R² have the same meaning as in formula (I), and

(c) converting the hydroperoxide of formula (IV) into phenol and a ketone of formula (I).

A method wherein a methanol-containing gas stream is passed in contact with a catalyst comprising a supported or unsupported bulk vanadate catalyst in the presence of an oxidizing agent for a time sufficient to convert at least a portion of the methanol to formaldehyde (CH₂O).

A catalyst of synthesizing benzaldehyde and benzyl alcohol by methylbenzene, its manufacturing method and application. The active component is zirconium, or transit metals, alkaline metal, alkaline-earth metals, metals of IIIAíóIVA and VA Group in the Periodic Table. The method comprises solving a zirconium compound or a zirconium compound and a compound of an element as the active component, adding a precipitator; drying, burning, pulverizing to particles. In reactions, a gas containing oxygen is the oxygen source, such as oxygen and air, an organic solution wouldn't be used. The catalyzing reaction is 180-195 degree C, the pressure is 0.8-1.2Mpa. when the conversion rate of methylbenzene is 13.0úÑ, the total selectivity of benzaldehyde and benzyl alcohol is 86.6úÑ. In the method, the catalyst is easy to be separated and could be recyclable, the reaction condition is mild.

The invention relates to a metal-organic framework supported heteropoly acid catalyst for synthesizing glutaraldehyde and a production method of the metal-organic framework supported heteropoly acid catalyst. The catalyst is prepared by a one-step synthesis method, namely a heteropoly acid component with catalytic oxidation activity is introduced into a duct of a metal-organic framework material UiO-66 in the process of synthesizing the metal-organic framework material UiO-66. The catalyst has the characteristics that the catalyst has a crystal framework structure, the active component is highly dispersed, and the heteropoly acid is over-high in load. The catalyst is applied to catalytic selective oxidation reaction of cyclopentene, so that the selectivity and the yield of the glutaraldehyde is greatly improved; the numerical value is much higher than the reported homogeneous catalysis level; and the metal-organic framework supported heteropoly acid catalyst has important industrial application value.

A method for sequentially performing a synthesis, separation and screening of chemical entities, especially a combinatorial library, is described. The method utilises a bulk of a stationary phase (e.g. silica gel, aluminium oxide, cellulose, etc. for example arranged on a backing) for the performance of the synthesis, separation and screening. The technique described enables a rapid route from synthesis to the testing of chemical compounds. Screening can be performed without need for reaction work-up. Preferred screening methods are those used to determine the biological activity of the compounds.

The invention discloses a preparation method and an application of a load type nano-gold catalyst. The preparation method comprises the following steps of: (1) adding 2.0g of halloysite nanotube carrier, 2.05 to 6.15mL of chlorogold acid solution with a concentration of 10g/L and 40 to 120mL of deionized water to a 250mL flask with three necks; (2) putting the flask into an oil bath with the temperature of 60 DEG C; adjusting the pH of the solution to 8 to 12 by using 4.0M ammonia water; then carrying out stirring reflux at 95 DEG C-105 DEG C for 1 hour; filtering; rinsing for 5 minutes by using 10 to 20mL of 4.0M ammonia water; washing twice with 15 to 20mL of hot water; drying for 1 to 2 hours at 100 DEG C; and finally roasting for 3 to 4 hours in air at 300 DEG C to obtain the load type nano-gold catalyst. The invention has the advantages of simple and convenient preparation method, uniformly dispersed gold particles and high loading efficiency. The catalyst provided by the invention can be used for cyclohexene oxidation of cyclonene and cyclohexenol, with the advantages of mild reaction condition, good activity and selectivity and less catalyst utilization quantity.

The present invention provides a process of producing unsaturated aldehydes and unsaturated acids from olefins by fixed-bed catalytic partial oxidation in a shell-and-tube heat exchanger-type reactor. In this process, the reactor comprises a first-step reaction zone of mainly producing the unsaturated aldehydes, a second-step reaction zone of mainly producing the unsaturated acids, or both the two zones. The first-step reaction zone is divided into two or more zones by a partition. Each of the divided shell spaces is filled with a heat transfer medium, and the heat transfer medium in each shell space is maintained at isothermal temperature or a temperature difference of 0-5 ° C. The temperatures of the heat transfer media in each of the divided shell spaces are set to increase in the moving direction of reactants. In order to facilitate the removal of heat generation at a location where the partition is placed, a reaction inhibition layer is disposed in the first-step reaction zone. Also, in order to protect the catalyst layer from a highly exothermic reaction, the process is performed at a limited temperature difference between the temperature in a hot spot and the temperature of a molten salt. If the improved heat control system according to the present invention is used, the heat stability of the catalyst layer will be secured and the yields of intermediate and final products can be increased.

The present invention is directed to novel methods for production of 5-epi-β-vetivone, 2-isopropyl-6,10-dimethyl-spiro[4.5]deca-2,6-dien-8-one and 2-isopropyl-6,10-dimethyl-spiro[4.5]deca-1,6-dien-8-one, which are useful for their fragrant qualities. In one embodiment the present invention describes a method for production of 5-epi-β-vetivone by the use of premnaspirodiene as starting material. In another embodiment the present invention describes a method for production of 2-isopropyl-6,10-dimethyl-spiro[4.5]deca-2,6-dien-8-one and 2-isopropyl-6,10-dimethyl-spiro[4.5]deca-1,6-dien-8-one by the use of premnaspirodiene as starting material. In yet another embodiment the present invention describes a novel method for production of premnaspirodiene from a terpene substrate. Use of the fragrant components or any composition containing the component can be advantageously employed in the perfumery industry.

The invention provides novel anthraquinone compositions that are useful as broad-spectrum quenchers of fluorescence and provides methods for making and using them. The anthraquinone quenchers can be conjugated to a variety of biologically relevant compounds, including lipids, nucleic acids, polypeptides, and more specifically antigens, steroids, vitamins, drugs, haptens, metabolites, toxins, environmental pollutants, amino acids, peptides, proteins, nucleotides, oligonucleotides, polynucleotides, carbohydrates, and their analogs. The invention also provides kits comprising, in one or more containers, at least one anthraquinone quencher dye composition of the present invention, and instructions for using that composition.

The invention relates to a method for producing monocyclic ketones C₇-C₂₀.

The method of patent protection sought is based on the oxidation reaction of monocyclic alkenes C₇-C₂₀ into corresponding monocyclic ketones with nitrous oxide or a mixture thereof with inert gas. The process proceeds at a temperature ranging from 20 to 350° C. and a pressure of the nitrous oxide ranging from 0.01 to 100 atm. The process provides a high selectivity involving the target product, blast-resistant work operations and is promising for industrial use.

The invention discloses a benzyl alcohol selective oxidation catalyst, which consists of a carrier and metal components, wherein the carrier is MgAl2O4, the metal components are selected from one or more metallic oxides of V, Mo, W, Ag, Cu, Zn, Co, Ni, Fe or Sn, and in terms of the total weight of the catalyst, the catalyst comprises 80.0 to 99.9 percent of the MgAl2O4 and 0.1 to 20.0 percent of the metallic oxides. The specific surface areas of the prepared carrier MgAl2O4 and the MeOx/MgAl2O4 catalyst are between 200 and 400 m/g, the most probable pore diameter is between 3 and 6 nanometers, and the particle size is less than 100 nanometers.

The invention relates to a double-metal MOF (Metal-Organic Framework) catalyst. Two inorganic metal centers and an organic ligand are self-assembled through a coordination bond to form a three-dimensional cage-shaped structure; the specific surface area is 170 to 1,145m<2>/g, the pore capacity is 0.18 to 0.48cm<3>/g and the average pore diameter is 1.34 to 3.55nm; any two types of nitrate of metalcopper, nickel, cobalt and cerium are used as metal precursors, one of trimesic acid, 2-methylimidazole or terephthalic acid is used as a synthesis ligand and a suitable solvent is selected to synthesize the double-metal MOF catalyst. A double-metal MOF material is used as a catalyst and p-diethylbenzene is used as a raw material; the p-diethylbenzene is catalytically oxidized in a fixed bed to prepare p-ethylacetophenone. The method provided by the invention has the advantages of mild reaction conditions, simplicity in operation, high p-diethylbenzene conversion rate and high p-ethylacetophenone selectivity; a product and the catalyst are easy to separate and the catalyst is stable in performance; reaction is applied to fixed bed reaction to realize continuous production, so that the method has a wide industrial application prospect.

The invention discloses a metal organic framework material of a Fe porphyrin ligand, a preparation method therefor and an application thereof, and belongs to the technical field of crystalline materials. A chemical formula of the Fe porphyrin ligand is FeL, wherein L is am organic ligand, namely 5, 15-bipyridine-10 and 20-dicarboxyphenyl ironporphyrin. In a closing condition, a crystal of the metal organic framework material is obtained by the organic ligand, namely 5, 15-bipyridine-10, 20-dicarboxyphenyl ironporphyrin and iron nitrate nonahydrate by virtue of thermal reaction in a solution of N,N-dimethylformamide and acetic acid. The metal organic framework material has an iron porphyrin catalytic property, and can be used for selective catalysis of cycloalkane.