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1187results about "Imino compound preparation" patented technology
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Ligands for metals and improved metal-catalyzed processes based thereon
InactiveUS7223879B2More featureEasy to useCarboxylic acid nitrile preparationCarboxylic acid esters preparationCarbon–carbon bondHeteroatom
One aspect of the present invention relates to ligands for transition metals. A second aspect of the present invention relates to the use of catalysts comprising these ligands in transition metal-catalyzed carbon-heteroatom and carbon-carbon bond-forming reactions. The subject methods provide improvements in many features of the transition metal-catalyzed reactions, including the range of suitable substrates, reaction conditions, and efficiency.
Owner:MASSACHUSETTS INST OF TECH
Ligands for metals and improved metal-catalyzed processes based thereon
InactiveUS6946560B2More featureEasy to useCarboxylic acid nitrile preparationGroup 5/15 element organic compoundsCarbon–carbon bondHeteroatom
One aspect of the present invention relates to novel ligands for transition metals. A second aspect of the present invention relates to the use of catalysts comprising these ligands in transition metal-catalyzed carbon-heteroatom and carbon-carbon bond-forming reactions. The subject methods provide improvements in many features of the transition metal-catalyzed reactions, including the range of suitable substrates, reaction conditions, and efficiency.
Owner:MASSACHUSETTS INST OF TECH
Oxidation catalyst and process
InactiveUS20050176990A1Amino preparation from aminesOrganic-compounds/hydrides/coordination-complexes catalystsCatalytic oxidationNitrogen
This invention relates to the field of heterogeneous catalysis, and more particularly to catalysts including carbon supports having formed thereon compositions which comprise a transition metal in combination with nitrogen and / or carbon. The invention further relates to the fields of catalytic oxidation, including the preparation of secondary amines by the catalytic oxidation of tertiary amines.
Owner:MONSANTO TECH LLC
Transition metal-containing catalysts and processes for their preparation and use as oxidation and dehydrogenation catalysts
ActiveUS20050176989A1Efficient oxidationMaterial nanotechnologyAmino preparation from aminesAlcoholDehydrogenation
This invention relates to the field of heterogeneous catalysis, and more particularly to catalysts including carbon supports having formed thereon compositions which comprise a transition metal in combination with nitrogen and / or carbon. The invention further relates to the fields of catalytic oxidation and dehydrogenation reactions, including the preparation of secondary amines by the catalytic oxidation of tertiary amines and the preparation of carboxylic acids by the catalytic dehydrogenation of alcohols.
Owner:MONSANTO TECH LLC
Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds
InactiveUS6867298B2Cheap and practicalLow costUrea derivatives preparationCarbamic acid derivatives preparationCarbon–oxygen bondHydrazine compound
The present invention relates to copper-catalyzed carbon-heteroatom and carbon-carbon bond-forming methods. In certain embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-nitrogen bond between the nitrogen atom of an amide or amine moiety and the activated carbon of an aryl, heteroaryl, or vinyl halide or sulfonate. In additional embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-nitrogen bond between a nitrogen atom of an acyl hydrazine and the activated carbon of an aryl, heteroaryl, or vinyl halide or sulfonate. In other embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-nitrogen bond between the nitrogen atom of a nitrogen-containing heteroaromatic, e.g., indole, pyrazole, and indazole, and the activated carbon of an aryl, heteroaryl, or vinyl halide or sulfonate. In certain embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-oxygen bond between the oxygen atom of an alcohol and the activated carbon of an aryl, heteroaryl, or vinyl halide or sulfonate. The present invention also relates to copper-catalyzed methods of forming a carbon-carbon bond between a reactant comprising a nucleophilic carbon atom, e.g., an enolate or malonate anion, and the activated carbon of an aryl, heteroaryl, or vinyl halide or sulfonate. Importantly, all the methods of the present invention are relatively inexpensive to practice due to the low cost of the copper comprised by the catalysts.
Owner:MASSACHUSETTS INST OF TECH
Catalysis systems for preparing highly branched alkane by using olefin
The present invention discloses a class of catalysis systems for preparing highly branched alkanes by using olefins. The catalysis systems comprise a class of novel nickel complexes and palladium complexes. With effects of the catalysis systems, only mild conditions are required to efficiently obtain oily highly branched alkane mixtures by using ethylene and other olefins, wherein the alkane mixtures have a low bromine value, and can be used for processing aids, and high-performance base oil of lubricants,. The present invention further provides a preparation method for catalysts, and a preparation method for oily olefin polymers.
Owner:NANJING CHEMRUN CO LTD +1
Preparation and application of latent nonionic self-emulsifying epoxy curing agent
Owner:GUANGZHOU CHEM GROUTING CO LTD CAS
Diimine ligand compound, and complex and application thereof
ActiveCN106397264AHigh molecular weightIncrease the rate of polymerizationNickel organic compoundsImino compound preparationHydrogenHalogen
The invention provides a diimine ligand compound as shown in a formula (I) which is defined in the specification and a preparation method thereof. In the formula I, R1 to R10 are same or different and are independently selected from a group consisting of hydrogen, saturated or unsaturated alkyl groups, oxyl groups and halogen. The invention also relates to the preparation method for the diimine ligand compound, a complex containinging the diimine ligand compound, and a preparation method and application of the complex. As a catalyst composition obtained in the invention is applied to ethylene homopolymerization, polymerization activity is high under a high-temperature polymerization condition (50 to 100 DEG C); and an obtained polymer has high molecular weight and narrow molecular weight distribution.
Owner:CHINA PETROLEUM & CHEM CORP +1
Polymers having attached luminescent metal complexes and devices made with such polymers
InactiveUS6869693B2Group 8/9/10/18 element organic compoundsSolid-state devicesPolymer sciencePolymer
The present invention is generally directed to a polymeric metal complex comprising a polymeric material having a plurality of a first-type functional groups, wherein at least a portion of the functional groups are coordinated to at least one metal containing complex, polymeric-metal complex salts comprising at least one polymeric material having a plurality of first-type functional groups having a charge, and at least one metal complex having an opposite charge. It further relates to devices that are made with the polymeric metal complex or the polymeric-metal complex salt.
Owner:LG CHEM LTD
Volatile copper(II) complexes for deposition of copper films by atomic layer deposition
InactiveUS20050003075A1Copper organic compoundsVacuum evaporation coatingDiimineAtomic layer deposition
Owner:EI DU PONT DE NEMOURS & CO
Salalen ligands and organometallic complexes
InactiveUS8907032B2Substantial effect on efficiency of polymerization process and on propertyIsocyanic acid derivatives preparationOrganic compound preparationAlpha-olefinAlkene
Use of homogeneous catalytic systems which include as a pre-catalyst a complex of a Group IV metal and a salalen ligand in the polymerization of alpha-olefins, is disclosed. The alpha-olefin polymers obtained are characterized by controlled levels of tacticity. Also disclosed are novel salalen ligands and novel complexes thereof with Group IV metals.
Owner:RAMOT AT TEL AVIV UNIV LTD
Diimine ligand compound, and complex and application thereof
ActiveCN106397261ANarrow molecular weight distributionIncrease the rate of polymerizationNickel organic compoundsImino compound preparationHalogenDiimine
The invention provides a diimine ligand compound as shown in a formula (I) which is defined in the specification and a preparation method thereof. In the formula I, R1 to R10 are same or different and are independently selected from a group consisting of hydrogen, saturated or unsaturated alkyl groups, oxyl groups and halogen. The invention also relates to the preparation method for the diimine ligand compound, a complex containinging the diimine ligand compound, and a preparation method and application of the complex. As a catalyst composition obtained in the invention is applied to ethylene homopolymerization, polymerization activity is as high as 3.84 * 10<6> g / mol(Ni) / h under a high-temperature polymerization condition (50 to 100 DEG C); and an obtained polymer has high molecular weight and narrow molecular weight distribution.
Owner:CHINA PETROLEUM & CHEM CORP +1
Transition metal-containing catalysts and processes for their preparation and use as oxidation and dehydrogenation catalysts
Owner:MONSANTO TECH LLC
Arylation and vinylation of activated carbons
InactiveUS6867310B1Carboxylic acid nitrile preparationGroup 5/15 element organic compoundsActivated carbonHydrazone
The present invention provides transition-metal-catalyst-based methods for the arylation and vinylation of activated methyl, methylene, and methine carbons with aryl halides, vinyl halides, and the like. The methods of the invention provide several improvements over existing methods, including the ability to synthesize efficiently and under mild conditions α-aryl and α-vinyl products from a wide range of starting materials, including ketones, esters, hydrazones, and imines. Furthermore, the methods of the invention may be used in an asymmetric sense, i.e. to produce enantiomerically-enriched chiral α-aryl and α-vinyl products.
Owner:MASSACHUSETTS INST OF TECH
1,3,5,7-tetramethyl-8-triphenylamine base pyrrole methane-boron difluoride complex compound and preparation method thereof
InactiveCN102321109AOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsMethylene DichlorideOrganic synthesis
The invention relates to a 1,3,5,7-tetramethyl-8-triphenylamine base pyrrole methane-boron difluoride complex compound and a preparation method thereof, which belong to the technical field of organic synthesis. The existing photocatalysts have few varieties and low conversion rate, and the existing bodipy dye has low infrared fluorescent efficiency and small Stokes displacement. The invention provides the 1,3,5,7-tetramethyl-8-triphenylamine base pyrrole methane-boron difluoride complex compound. The preparation method comprises the steps that: 4-formoxyl tetramethyl and 2,4-dimethyl pyrrole are dissolved in organic solvents, trifluoroacetic acid or monoprop is used as catalysts, and a reaction system is formed; 2,3-dichloro-5,6-dicyan-1,4-para-benzoquinone with the same mol ratio as the 4-formoxyl tetramethyl is taken, is dissolved in the methylene dichloride and is added into the reaction system; and one of triethylamine, triisopropyl amine and N,N-diisopropylethylamine is added into the reaction system, boron trifluoride etherate is added under the ice bath, and final products are generated.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Schiff base compound and method for detecting aniline compound thereof
InactiveCN101619032AImprove luminous efficiencyThe synthesis method is simpleHydrazone preparationFluorescence/phosphorescenceOrtho positionAniline
The invention relates to a Schiff base compound and a method for detecting an aniline compound thereof, belonging to the technical field of chemical sensor materials. The Schiff base compound is characterized by being prepared in such a way that an aromatic aldehyde compound with ortho-position hydroxyl reacts with monoamine or polyamine and has the structural formula shown as the figure, wherein n1 is an integer from 1 to 100, and n2 is an integer from 1 to 6; R is an aliphatic hydrocarbon substituted group, an aryl substituted group, heteroatom-substituted aliphatic alkyl or heteroatom-substituted aryl alkyl; and R1 and R2 are electron-withdrawing groups or electron-donating groups. The compound has stable solid fluorescence luminous performance, the fluorescence strength of the compound is changed by the aniline compound, the aniline compound can be detected according to the change of the fluorescence strength of the compound, and the compound is a novel fluorescence sensing material for detecting aniline.
Owner:上海新微科技发展有限公司
Salalen ligands and organometallic complexes
InactiveUS20130096271A1Substantial effect on efficiency of polymerization process and on propertyIsocyanic acid derivatives preparationOrganic compound preparationAlpha-olefinAlkene
Use of homogeneous catalytic systems which include as a pre-catalyst a complex of a Group IV metal and a salalen ligand in the polymerization of alpha-olefins, is disclosed. The alpha-olefin polymers obtained are characterized by controlled levels of tacticity. Also disclosed are novel salalen ligands and novel complexes thereof with Group IV metals.
Owner:RAMOT AT TEL AVIV UNIV LTD
Amide compound and preparation method as well as application thereof
ActiveCN102838505AReduce cholesterolLow toxicityOrganic active ingredientsMetabolism disorderSolubilityOrganic solvent
Owner:SHANGHAI INST OF PHARMA IND CO LTD +1
Metal organic skeleton material for removing cobalt ions from wastewater and preparation method of metal organic skeleton material
InactiveCN106861627ASave resourcesSimple processOther chemical processesOrganic compound preparationSorbentWastewater
The invention discloses a metal organic skeleton material for removing cobalt ions from wastewater and a preparation method of the metal organic skeleton material. The method comprises the following steps: preparing UiO-66-NH2 firstly, then preparing UiO-66-R1, and finally, preparing a bis-Schiff base functional group-containing metal organic skeleton material; and then using the bis-Schiff base functional group-containing metal organic skeleton material for adsorption treatment on the cobalt ions in the wastewater, namely, carrying out adsorption treatment on the cobalt-containing wastewater, and inspecting influences of factors, including cobalt-containing solutions with different pH values, different adsorption temperatures, different adsorption time and different original cobalt ion concentrations on cobalt ion adsorption with UiO-66-Schiff base as an adsorbent, wherein the adsorbing capability of the adsorbent to the cobalt ions under a preferred condition can reach 256mg / g. The preparation method of the invention has the characteristics of simpleness in technology, no secondary pollution and high adsorbing capability; the metal organic skeleton material has the characteristics of capability of cyclic utilization, resource conservation, cost reduction and the like; and a new method for removing the cobalt ions from the cobalt-containing wastewater is found.
Owner:SICHUAN UNIV
Purification process of carbon nanotubes
InactiveUS20050234263A1Material nanotechnologyOrganic compound preparationCrystalline materialsNanotube
The present invention describes a new method for the purification of carbon nanotubes from contaminants deriving from industrial production, constituted by amorphous or carbon crystalline material and metals used for catalysis. The method provides for their organic furretionalization obtaining dirivatized nanotubes, precipitation of functionalized nanotubes and subsequent regeneration of non-functionalized nanotubes by heat treatment.
Owner:UNIV DEGLI STUDI DI TRIESTE
Dual-carbodiimide class and preparation as well as anti-hydrolysis application thereof
The invention discloses a dual-carbodiimide class compound and preparation as well as anti-hydrolysis application thereof. The invention relates to a dual-carbodiimide class compound and a preparation method thereof in a general formula (I), wherein R1, R2, R3, R4 and R5 are defined as in claim 1. The dual-carbodiimide class compound can be used as an anti-hydrolysis stabilizing agent to be added to polyurethane and polyester elastomers so as to prevent the hydrolytic degradation aging of the polyurethane and polyester elastomers with ester structures.
Owner:CHIZHOU WANWEI CHEM
Method for preparing Roxadustat intermediate
ActiveCN106478504ARaw materials are easy to getReduce stepsImino compound preparationOrganic chemistryRoxadustat
The invention provides a preparation method of Roxadustat intermediate 4-hydroxy-1-methyl-7-phenoxy-3-isoquinolinecarboxylate (IV), comprising the step of subjecting 2-(1-(3-phenoxyphenyl)ethylimide)dimalonate (III) as a starting material to condensation and cyclization. The preparation method of the Roxadustat intermediate IV has the advantages that material is easy to obtain, operating steps are few, the process is simple, the reaction yield is high, atom utilization rate is high, and the method is easy for industrial production. The reaction general formula is shown in the specification.
Owner:SHANGHAI XUNHE PHARMA TECH CO LTD
Production technique of N,N'-dicyclo hexylcar bodiimide
ActiveCN101096349AComplete oxidation reactionReduce manufacturing costImino compound preparationPolyethylene glycolCyclohexylamine
The invention discloses a production technology of N, N'-dicyclo hexylcar bodiimide, which comprises the following steps: generating dicyclohexyl sulfourea and sodium sulfide with cyclohexylamine and carbon bisulphide; generating N, N'-dicyclo hexylcar bodiimide by oxygenizing dicyclohexyl sulfourea twice with sodium hypochlorite and removing hydrogen sulfide. The invention is characterized by the following: adding the accelerant when dicyclohexyl sulfourea is oxygenized by sodium hypochlorite; applying triethyl benzyl ammonium chloride(TEBA)or carbowax as the accelerant; adding sodium sulfide which is generated in the first step reaction in order to removing sulfur by reacting with sulfur in the organic phase after oxygenizing twice. The invention guarantees the sufficient oxidation reaction, which reduces the production cost, and improves the product quality.
Owner:SHANDONG JINCHENG PHARMACEUTICAL GROUP CO LTD
Method for preparing amino acid schiff base metal complexes without solvent
InactiveCN101811919AReduce usageCompliant with Green Chemistry RequirementsAmino group formation/introductionImino compound preparationBenzaldehydePotassium hydroxide
The invention discloses a method for preparing amino acid schiff base metal complexes without solvent, and relates to a method for preparing the amino acid-Schiff base metal complexes. The invention solves the problems of high solvent consumption and long reaction time in the conventional method for preparing the amino acid schiff base metal complexes. The method comprises the following steps of: 1, under the anhydrous condition, mixing L-amino acid, ortho-hydroxy-benzaldehyde and potassium hydroxide, and grinding for 2 to 5 minutes to obtain amino acid schiff base; and 2, adding bivalent copper salt or bivalent zinc salt into the amino acid schiff base obtained in the step 1, and grinding for 3 to 6 minutes to obtain the amino acid schiff base metal complexes, wherein the step 1 and the step 2 are all completed at room temperature. The whole preparation process needs only 5 to 11 minutes, the reaction time is short, the solvent is not needed, the process is simple, the work efficiency is high, the posttreatment is simple and the yield reaches 80 to 95 percent.
Owner:HARBIN UNIV OF SCI & TECH
Preparation method and application of metal organic framework material loaded with Schiff base complex
ActiveCN107056649AHigh catalytic performance and very stableWon't be lostOxygen-containing compound preparationOrganic compound preparationCyclohexanoneHydrogen peroxide breakdown
The invention discloses a preparation method and an application of a metal organic framework material loaded with a Schiff base complex. Salen is formed by introducing salicylic aldehyde onto an amino functionalization metal organic framework material, then, Salen and transition metal ions form a complex, the metal organic framework material loaded with the Schiff base complex is prepared, and the material is applied to a cyclohexyl hydroperoxide decomposition reaction. The prepared catalyst is high in catalytic performance, the catalytic activity of the catalyst is basically not reduced after being recycled repeatedly, the catalyst is stable in performance and is applied to catalysis of the cyclohexyl hydroperoxide decomposition reaction, the decomposition conversion rate can reach 97%, the total selectivity of alcohol ketone can reach 99.8%, the good decomposition effect can be obtained without alkaline liquor, the environmental problem caused by the waste liquor is effectively avoided, the environmental pollution is significantly reduced, and meanwhile, the proportion of cyclohexanol to cyclohexanone is significantly increased.
Owner:XIANGTAN UNIV
Benzoin oxime derivative and preparation method thereof
ActiveCN104447396AComplex structureBroad use prospectsImino compound preparationChemical industryMalonate
The invention relates to a benzoin oxime derivative and a preparation method thereof. A structural formula of the benzoin oxime derivative is shown in the specification. The preparation method comprises the following steps: reacting malonate with propargyl bromide in anhydrous acetonitrile under the catalysis of sodium hydride to obtain a white solid product; by taking triethylamine as alkali, reacting the white solid product with phenylethynyl bromine or substituted phenylethynyl bromine in anhydrous acetonitrile under the catalysis of Pd(PPh3)2Cl2 / CuI to obtain a light brown solid product; reacting the light brown solid product with benzoin oxime in toluene at 95-105 DEG C to obtain the benzoin oxime derivative. A brand new synthetic method of polysubstituted benzoin oxime is provided, and a series of new benzoin oxime derivatives are generated. Compared with normal benzoin oxime derivatives, the benzoin oxime derivative prepared by virtue of the preparation method has relatively complex and diverse structures by virtue of multiple cycles, and presents relatively wide application prospects in chemical industry production and clinic medicines.
Owner:ANHUI NORMAL UNIV
Optically active quaternary ammonium salt having axial asymmetry and process for producing alpha-amino acid and derivative thereof with the same
ActiveUS20070161624A1Simple structureEasy to provideBiocideOrganic compound preparationMedicinal chemistryAlpha amino acid
Owner:KISHIDA CHEM
Method for preparing supported nano copper nickel catalyst and application thereof in oxidative dehydrogenation reaction of alkylol amine
InactiveCN1827218AHigh yieldHigh reuse rateCatalyst carriersCatalyst activation/preparationNickel saltDehydrogenation
The invention discloses a method for preparing the carrier catalyst which can be used in aminoethyl alcohol dehydrogenation reaction to prepare the iminodiacetic acid, and relative usage. It comprises following steps: using the copper salt and nickel salt as main raw material, via dipping, drying, high-temperature baking and programmed increasing temperature, to from said catalyst nanometer copper nickel composite catalyst, then using said catalyst in aminoethyl alcohol dehydrogenation reaction to prepare the iminodiacetic acid. Said inventive catalyst has higher reaction activity. And the raw materials are easily to be attained, the producing cost is lower, and it has better application prospect.
Owner:SHANGHAI UNIV OF ENG SCI
Optically Active Alpha-Hydroxyphosphonic Acid, Its Derivatives and Production Method thereof, Optically Active Aluminum (Salalen) Complex and Production Method Thereof, and Production Method of Salalen Ligand
InactiveUS20090099381A1High enantioselectivityEfficient CatalysisIsocyanic acid derivatives preparationOrganic compound preparationTosylhydrazoneEnantio selectivity
The present invention relates to a production method capable of producing an optically active α-hydroxyphosphonic acid and its derivatives with sufficiently high enantioselectivity not only for aromatic aldehydes but also for aliphatic aldehydes, and more specifically to a method of producing an optically active α-hydroxyphosphonic acid and its derivatives, characterized in that an optically active aluminum(salalen) complex represented by any one of the following formulae (I), (I′), (II) and (II′):[wherein R1s are each alkyl group or aryl group independently; R2s are each alkyl group or aryl group independently; R3s are each alkyl group or aryl group independently, and two R3s may bond with each other to form a ring; R4s are each hydrogen atom, halogen atom, alkyl group, alkoxy group, nitro group, or cyano group independently; R5 is alkyl group; and X1 is halogen atom, alkyl group, alkoxy group, acetoxy group or toluenesulfonyloxy group] is used as a catalyst to asymmetrically hydrophosphonylate an aldehyde with phosphonic acid or its derivatives.
Owner:JAPAN SCI & TECH CORP
Diimine palladium catalyst with great steric hindrance, and ligand, preparation method and application thereof
ActiveCN105152970AImprove thermal stabilityHigh activityGroup 8/9/10/18 element organic compoundsImino compound preparationPolymer scienceDiimine
The invention relates to a diimine palladium catalyst with great steric hindrance, and ligand, preparation method and application thereof. The diimine palladium catalyst has a formula as described in the specification, and R1 to R7 and X are as defined in the specification. The catalyst provided by the invention has high thermal stability and activity to vinyl polymerization and enables polyethylene with low branching degree and high molecular weight to be produced. Moreover, the catalyst can be applied to copolymerization of ethylene and methyl acrylate. Polyethylene and ethylene-methyl acrylate copolymer prepared in the aid of the catalyst are hypocrystalline solids.
Owner:合肥中科科乐新材料有限责任公司
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