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34 results about "Cobalt hydrocarbonyl" patented technology
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Cobalt hydrocarbonyl tetracarbonylhydridocobalt Tetracarbonylhydrocobalt Hydrocobalt tetracarbonyl. ... Cobalt tetracarbonyl hydride is an organometallic compound with the formula HCo(CO) 4. It is a volatile, yellow liquid that forms a colorless vapor and has an intolerable odor.
High molecular weight alkyl-allyl cobalttricarbonyl complexes and use thereof for preparing dielectric thin films
ActiveUS20120177845A1Easy to handleCobalt organic compoundsChemical vapor deposition coatingPolymer scienceThin membrane
A method for forming a cobalt-containing thin film by a vapor deposition process is provided. The method comprises using at least one precursor corresponding in structure to Formula (I); wherein R1 and R2 are independently C2-C8-alkyl; x is zero, 1 or 2; and y is zero or 1; wherein both x and y can not be zero simultaneously.
Owner:SIGMA ALDRICH CO LLC
Method for preparing 2,4,5 trifluorobenzene acetic acid
ActiveCN101092345ALow priceFew reaction stepsCarboxylic preparation from carbon monoxide reactionAcetic acidPtru catalyst
This invention provides a method for preparing 2, 4, 5-trifluorophenylacetic acid. The method comprises: (1) reacting 1,2,4-trifluorobenzene and chlorinating agent in paraformaldehyde to obtain 2,4,5-trifluorobenzyl chloride; (2) performing carbonylation reaction with CO in the presence of catalyst to obtain 2,4,5-trifluorophenylacetic acid. The catalyst is alkali cobalt tetracarbonyl. The method has such advantages as few reaction procedures, and mild reaction conditions, and is suitable for industrial production of 2, 4, 5-trifluorophenylacetic acid.
Owner:ZHEJIANG YONGTAI TECH CO LTD
Catalyst for treating organic wastewater and preparation method thereof
InactiveCN102101053AHigh activityHigh removal rateMetal/metal-oxides/metal-hydroxide catalystsChemical oxygen demandRuthenium
The invention discloses a catalyst for treating organic wastewater and a preparation method thereof. The catalyst is a metal carbonyl loaded catalyst, a precursor of the catalyst is one or a combination of ruthenium carbonyl and cobalt carbonyl, a second component Ce or Fe is added at the same time, and a carrier of the catalyst is selected from one or a compound oxide of active carbon, gamma-Al2O3 and TiO2. The catalyst can be used for oxidizing and degrading different organic matters with various concentrations in water under a milder condition so as to greatly reduce COD (Chemical Oxygen Demand) in wastewater and improve the removal efficiency of the COD in the wastewater.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Octahydro cyclopenteno [c] pyrroletetrazole derivative and preparation thereof
InactiveCN101463001ASimple processEasy industrial operationOrganic chemistryBulk chemical productionTert-Butyloxycarbonyl protecting groupStructural formula
The invention relates to an octahydro cyclopentenopyridine (c) carboxylic acid derivative and a preparing method thereof, providing basis for designing and preparing compounds with different biological activities. A chemical structural formula is shown in the fight formula, wherein, R1 is one of alkoxy, bydroxy and amine. R2 and R3 are one of bydroxy, fluorine and hydrogen. N protecting group is tertbutyloxycarbonyl, benzyloxycarbonyl or benzyl. The compounds are optically pure. Starting from natural methionine ester or hydrochloride thereof, the compound of (S)-2-((benzyloxycarbonyl)(propargyl)-amine)butane-3-carboxylic ester (5) is obtained through substitution, oxidation and elimination. After reactions of cobalt carbonyl catalytic cyclization, and the like, (S)-2-benzyloxycarbonyl-5-octahydro cyclopentenopyridine (c)-1- carboxylic ester is obtained. Series of deritative compounds are obtained through reduction of carbonyl, fluorination, chiral separation, hydrolysis and condensation.
![Octahydro cyclopenteno [c] pyrroletetrazole derivative and preparation thereof](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/28c5abf4-a2cd-42d3-bc98-d2d1badcb37c/A200710094607C00021.PNG "Octahydro cyclopenteno [c] pyrroletetrazole derivative and preparation thereof")
![Octahydro cyclopenteno [c] pyrroletetrazole derivative and preparation thereof](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/28c5abf4-a2cd-42d3-bc98-d2d1badcb37c/A200710094607C00022.PNG "Octahydro cyclopenteno [c] pyrroletetrazole derivative and preparation thereof")
![Octahydro cyclopenteno [c] pyrroletetrazole derivative and preparation thereof](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/28c5abf4-a2cd-42d3-bc98-d2d1badcb37c/A200710094607C00031.PNG "Octahydro cyclopenteno [c] pyrroletetrazole derivative and preparation thereof")
Owner:上海药明康德新药开发有限公司
Method of recovering molybdenum and cobalt from waste cobalt-molybdenum catalyst
ActiveCN103074494AEasy to getShort recycling processProcess efficiency improvementPtru catalystAluminium hydroxide
The invention provides a method of recovering molybdenum and cobalt from a waste cobalt-molybdenum catalyst. The method comprises the following steps: adding alkali into the waste cobalt-molybdenum catalyst, then roasting the waste catalyst, carrying out washing and filtering, adding an acid into an obtained filtrate to adjust a pH value, filtering a reacted solution, with filter residue being aluminum hydroxide for recovery of aluminum and a filtrate being a molybdenum-containing solution, adjusting the pH value of the molybdenum-containing solution to obtain molybdic acid deposition, washing the molybdic acid deposition with distilled water to wash out impurities adhering on molybdic acid and carrying out roasting so as to obtain molybdenum trioxide; and adding alkali for roasting, drying washed filter residue, introducing carbon monoxide gas after moisture is totally removed and introducing tail gas into a collection container after condensation at the same time, wherein carbonyl cobalt is condensed to form a solid, which allows metal cobalt to be recovered, the tail gas is cyclically used, and reacted filter residue after introduction of carbon monoxide gas can be used for recovery of carriers like magnesium and rare earth. According to the method, used raw materials are cheap, which is beneficial for cost control; steps of the method are simple, so recovery flow of metal cobalt and molybdenum is shortened, and a recovery rate is increased.
Owner:JINGMEN GEM NEW MATERIAL
Preparation method of cobalt sulfide nanomaterial and method for detecting hydrogen peroxide with cobalt sulfide nanomaterial
InactiveCN105692719AUniform particle size distributionImprove accuracyCobalt sulfidesMaterial analysis by observing effect on chemical indicatorColor reactionOleic Acid Triglyceride
The invention relates to the field of food detection, in particular to a preparation method of a cobalt sulfide nanomaterial and a method for detecting hydrogen peroxide with the cobalt sulfide nanomaterial. O-dichlorobenzene, oleic acid and trioctyl phosphine oxide react with an o-dichlorobenzene solution containing carbonyl cobalt, then reaction products react with an o-dichlorobenzene solution containing sulfur, the reaction products are sequentially washed and centrifuged with methanol and distilled water repeatedly, and cobalt sulfide nanomaterial powder is obtained. According to the method for detecting hydrogen peroxide with the cobalt sulfide nanomaterial, to be specific, a phosphate buffer solution of cobalt sulfide is added to a Tirs-Hcl buffer solution, then a to-be-detected solution and a TMB color developing agent are added, and whether the to-be-detected solution contains hydrogen peroxide or not is judged through observation of color reaction. The method is high in detection speed and accuracy and has better specificity to detection of hydrogen peroxide.
Owner:TAIYUAN UNIV OF TECH
Cobalt recovery process
A process for producing purified cobalt from a mixture comprising metallic species of cobalt and metallic species of at least one of the group consisting of nickel and iron, comprising producing a metal carbonyl mixture of cobalt carbonyl and at least one of nickel carbonyl and iron carbonyl from the metallic species mixture; separating the nickel carbonyl and / or iron carbonyl from the cobalt carbonyl; treating the cobalt carbonyl with an effective amount of a complexing gaseous mixture of nitric oxide / carbon monoxide to produce cobalt nitrosyl tricarbonyl; and decomposing the purified cobalt nitrosyl carbonyl to provide purified cobalt and regenerated complexing gaseous mixture for recycle. The process provides cobalt of improved quality in an optionally, Continuous and closed-loop manner. Preferred processes include either aqueous and / or gaseous process steps.
Owner:CVMR CORP
Coronene compound containing thioether in lateral chain and preparation method thereof
ActiveCN102584655AHigh carrier mobilitySolid-state devicesSemiconductor/solid-state device manufacturingCoroneneHexaphenylbenzene
The invention relates to coronene compound containing thioether in lateral chain and the preparation method thereof. The structural formula of the compound is shown in the descriptiopn: R refers to alkyl. In the method, ring trimerization- ferric trichloride coronene method, namely 2- (4'- bromophenyl) ethanol is taken as raw material, through hydroxyl bromo, thioether is formed, palladium-catalyzed is selected for direct coupled reaction, so as to obtain diphenylacetypene ramification, under the catalysis of cobalt carbonyl, corresponding hexaphenylbenzene is produced by trimerization cyclization. Anhydrous ferric trichloride is oxidized in methylene dichloride and nitromethane, then reduction is performed by using iodine and sodium borohydride system, and after drying, THF (tetrahydrofuran) is used for recrystal. The synthetic method provided by the invention is simple, is high in yield, and can be extensively used in organic LBD, field-effect tubes and solar batteries.
Owner:BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
Method for synthesizing malonic ester by one-pot carbonylation
InactiveCN102442904AReduce auxiliary raw materialsSave intermediate processPreparation by carbon monoxide or formate reactionAlcoholIron powder
The invention discloses a method for synthesizing malonic ester by one-pot carbonylation, which is characterized in that: under the conditions of a temperature at 40-80 DEG C and a pressure of carbon monoxide at 0.5-4 MPa, cobalt salts, zinc powders or iron powders, acetate chloride, C1-C6 alcohols and alkalis are added into a carbonylation reaction kettle. The one-pot method for synthesizing the malonic ester reaches a total conversation rate of the acetate chloride of 100% and a total selectivity of the malonic ester of 100%. The method disclosed by the method avoids the pre-preparation technological progress of carbonyl cobalt, is high in yield, gentle in reaction condition, simple and easy in technology.
Owner:TAIYUAN UNIV OF TECH
Synthesis method of 3-hydroxy propionate
ActiveCN106431921AImprove stabilityImprove conversion rateOrganic-compounds/hydrides/coordination-complexes catalystsPreparation by carbon monoxide or formate reaction3-Hydroxypropionic acidAryl
The invention relates to a synthesis method of 3-hydroxy propionate. The method mainly solves the problem that the selectivity of the 3-hydroxy propionate in the prior art is low. The synthesis method of the 3-hydroxy propionate comprises the following steps: i, enabling the ligand as shown in the formula (I) to perform the complexing reaction with cobalt carbonyl in a solvent to obtain a catalyst solution, wherein the solvent is the alcohol or the solvent containing the alcohol; R1 to R3 are independently selected from one of alkyl or alkenyl, aryl or substituted aryl, and heterocyclo, and R1 to R3 independently contain 1 to 6 carbon atoms; ii, adding ethylene oxide and carbon monoxide in the catalyst solution, reacting to obtain the 3-hydroxy propionate. The technical scheme well solves the technical problem, and can be used for the industrial production of the 3-hydroxy propionate. The the formula (I) is shown in the description.
Owner:CHINA PETROLEUM & CHEM CORP +1
Method for synthesizing 3-hydracrylic acid ester
ActiveCN106431926AAvoid easy separationEasy to separateOrganic-compounds/hydrides/coordination-complexes catalystsPreparation by carbon monoxide or formate reaction3-Hydroxypropionic acidAlcohol
The invention relates to a method for synthesizing 3-hydracrylic acid ester. The method mainly solves the problem that in the prior art, catalysts in a homogeneous system are difficult to separate. The method for synthesizing 3-hydracrylic acid ester includes the following steps that firstly, a ligand and cobalt carbonyl are subjected to a coordination reaction in an alcohol solvent to obtain turbid liquid of a catalyst; secondly, ethylene oxide and carbon monoxide are added, and a reaction is conducted to obtain 3-hydracrylic acid ester. According to the technical scheme, the ligand is selected from 4-vinylpyddine homopolymers or copolymers containing 4-vinylpyddine monomeric units, the technical problem is well solved, and the method can be used in industrial production of 3-hydracrylic acid ester.
Owner:CHINA PETROLEUM & CHEM CORP +1
Cobalt recovery from cobalt catalysed hydroformylation reactions
InactiveUS7910782B2Avoids excessive acid strengthGood water solubilityOxygen-containing compound preparationPreparation from carboxylic acid halidesCarbonylationAqueous solution
In a hydroformylation reaction, the circulation and recovery of cobalt carbonyl in a cobalt catalyst cycle using carbonylate as an intermediate and acidification thereof, is improved by supplying an aqueous sulfuric acid solution containing less than 16% wt of sulfuric acid to the carbonylate to control sulfuric acid concentration in the carbonylate / acid mixture, before accounting for any acid consuming reaction, to a value of from 2% to 10% by weight. Single step and multistage liquid / liquid extraction techniques as well as vapor / liquid extraction techniques followed by the absorption of cobalt from the vapor in an organic liquid both benefit from this improvement.
Owner:EXXONMOBIL CHEM PAT INC
High molecular weight alkyl-allyl cobalttricarbonyl complexes and use thereof for preparing dielectric thin films
ActiveUS9028917B2Easy to handleCobalt organic compoundsChemical vapor deposition coatingPolymer scienceThin membrane
Owner:SIGMA ALDRICH CO LLC
Hexabenzocoronene compound containing thioether in dovetail-like side-chain and preparation method thereof
ActiveCN104961665AAchieve preparationThe synthesis method is simpleSolid-state devicesSemiconductor/solid-state device manufacturingLiquid crystallineThiourea
The invention relates to a hexabenzocoronene compound containing thioether in the dovetail-like side-chain and a preparation method thereof. The structural general formula of the compound is described in the specification, and in the formula, R is a dovetail-like alkyl group. According to the invention, a ring trimerization-ferric trichloride co-coronene process is employed, 2-(4'-bromophenyl)ethanol is used as a raw material; mercaptan is produced after hydroxyl bromination and thiourea salt reaction; then thioether is prepared; a palladium catalyzed direct coupling reaction is selected so as to obtain a diphenylacetylene derivative; the diphenylacetylene derivative undergoes ring trimerization under the catalysis of carbonyl cobalt so as to produce corresponding hexaphenylbenzene; and hexaphenylbenzene is oxidized with ferric chloride anhydrous in dichloromethane and nitromethane and then reduced with a system consisting of iodine and sodium borohydride, then methanol is added, precipitation is carried out so as to obtain a yellow solid, and the yellow solid is purified. The dovetail-like side-chain is favorable for reduction of the melting point of the compound and enables a compound with a certain chain length to have the properties of discotic liquid crystals and to have mesogenic behavior, so reference is provided for designing of discotic liquid crystals. The hexabenzocoronene compound is extensively applied to organic light-emitting diodes, field effect transistors and solar cells.
Owner:BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
Preparation method and application of carbonyl cobalt catalyst
ActiveCN105233830AHigh selectivityHigh yieldPreparation by carbon monoxide or formate reactionMetal/metal-oxides/metal-hydroxide catalysts3-Hydroxypropionic acidMethyl lactate
The invention relates to a preparation method and application of a carbonyl cobalt catalyst through which 3-methyl lactate is prepared in an ethylene oxide methyl esterification mode. The preparation method of the carbonyl cobalt catalyst is characterized in that cobalt powder is used as a reducing agent, soluble cobalt salt and cobalt powder and an auxiliary reducing agent are placed into a high-pressure reaction kettle according to a mole ratio to be sealed, gas in the reaction kettle is replaced with inert gas, and stirring, cooling and centrifugal separation are carried out to obtain the carbonyl cobalt catalyst. The preparation method of the carbonyl cobalt catalyst is low in cost and has the better activity and selectivity compared with other preparation methods of the carbonyl cobalt catalyst, and no other carbonyl compound is produced in the preparation method; however, if manganese powder, zinc powder, iron powder, nickel powder and the like are adopted, corresponding carbonyl compound by-products are produced, impurities are introduced, and then the catalytic effect of the catalyst is affected. The selectivity and yield of the carbonyl cobalt catalyst through which the 3-methyl lactate is prepared in the ethylene oxide methyl esterification mode are high.
Owner:山东玉皇盛世化工股份有限公司
Cobalt Recovery From Cobalt Catalysed Hydroformylation Reactions
ActiveUS20100228046A1High water solubilityAvoids excessive acid strengthOxygen-containing compound preparationPreparation from carboxylic acid halidesChemistryCobalt carbonyl
In a hydroformylation reaction, the circulation and recovery of cobalt carbonyl in a cobalt catalyst cycle using carbonylate as an intermediate and acidification thereof, is improved by supplying an aqueous sulfuric acid solution containing less than 16% wt of sulfuric acid to the carbonylate to control sulfuric acid concentration in the carbonylate / acid mixture, before accounting for any acid consuming reaction, to a value of from 2% to 10% by weight. Single step and multistage liquid / liquid extraction techniques as well as vapour / liquid extraction techniques followed by the absorption of cobalt from the vapour in an organic liquid both benefit from this improvement.
Owner:EXXONMOBIL CHEM PAT INC
Preparing method of 3-hydroxypropionic acid ester
InactiveCN106431927ACatalytic reaction conditions are mildHigh activityOrganic-compounds/hydrides/coordination-complexes catalystsPreparation by carbon monoxide or formate reaction3-Hydroxypropionic acidAlcohol
The invention relates to a preparing method of 3-hydroxypropionic acid ester, and aims to solve the problem that a catalyst under a homogeneous system is difficult to separate in the prior art. The preparing method of the 3-hydroxypropionic acid ester comprises the steps of making ligand and cobalt carbonyl conduct coordination reaction in a solvent to obtain catalyst solution, wherein the solvent is alcohol or a solvent containing the alcohol, the ligand comprises a crosslinked polystyrene skeleton and -CH2XR perssad which is connected to benzene ring in the crosslinked polystyrene skeleton, wherein X is chosen from one of O atom, S atom and NH radical, R is chosen from one of 2-pyridyl, 3-pyridyl, 4-pyridyl, 5-quinolyl, 6-quinolyl, 7-quinolyl and 8-quinolyl; adding ethylene oxide and carbon monoxide into the catalyst solution to conduct reaction so as to obtain the 3-hydroxypropionic acid. According to the technical scheme, technical problems are favorably solved, and the preparing method can be applicable to the industrial production of 3-hydroxypropionic acid ester.
Owner:CHINA PETROLEUM & CHEM CORP +1
A kind of preparation method of cobalt-based catalyst for reforming hydrogen production with CO reduction modification
InactiveCN107029724BPlay the role of transportFavorable for reforming hydrogen production reactionHydrogenCatalyst activation/preparationSteam reformingDispersity
The invention relates to a method for preparing a cobalt-based catalyst for hydrogen production using CO reduction modification reforming, which includes the following steps: 1) Preparing a catalyst precursor by an impregnation method: impregnating an alumina carrier and a soluble cobalt salt solution to obtain a catalyst precursor , dry the catalyst precursor and then calcine it in a muffle furnace, and grind the burned catalyst precursor into fine particles; 2) CO reduction: Put the ground catalyst precursor into the reactor, and control the reaction conditions to make CO and the catalyst The surface-reduced metallic cobalt reacts to form cobalt carbonyl; through the redistribution of gaseous cobalt carbonyl on the catalyst surface, cobalt species are transported, thereby effectively reducing the particle size of cobalt species on the catalyst surface, which is beneficial to hydrogen production by ethanol steam reforming. progress of the reaction. By controlling the reaction conditions, the present invention causes the catalyst to generate cobalt carbonyl during the CO reduction process, thereby realizing the self-dispersion of cobalt species and improving the dispersion of cobalt on the surface of the catalyst.
Owner:UNIV OF JINAN
Cobalt recovery process
A process for producing purified cobalt from a mixture comprising metallic species of cobalt and metallic species of at least one of the group consisting of nickel and iron, comprising producing a metal carbonyl mixture of cobalt carbonyl and at least one of nickel carbonyl and iron carbonyl from the metallic species mixture; separating the nickel carbonyl and / or iron carbonyl from the cobalt carbonyl; treating the cobalt carbonyl with an effective amount of a complexing gaseous mixture of nitric oxide / carbon monoxide to produce cobalt nitrosyl tricarbonyl; and decomposing the purified cobalt nitrosyl carbonyl to provide purified cobalt and regenerated complexing gaseous mixture for recycle. The process provides cobalt of improved quality in an optionally, continuous and closed-loop manner. Preferred processes include either aqueous and / or gaseous process steps.
Owner:CVMR CORP
In-situ carbonylation method straight-through liquid sodium phenylacetate synthesis method and application
ActiveCN112430182ASynthetic conditions are mildProcess stabilityOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsSodium acetatePtru catalyst
The invention discloses an in-situ carbonylation method straight-through liquid sodium phenylacetate synthesis method, which comprises the following steps of adopting cobalt salt and carbon monoxide as raw materials, adopting methanol as a solvent, adopting sodium thiosulfate, sodium sulfide and manganese metal as auxiliary materials, and carrying out low pressure synthesis under a stirring condition to obtain a cobalt carbonyl catalyst, introducing carbon monoxide into the catalyst system, adding benzyl chloride and liquid caustic soda in situ, and carrying out low-pressure synthesis under astirring condition to obtain sodium phenylacetate, carrying out in-situ aeration, cobalt and manganese precipitation and solid-liquid separation in a synthesis system, collecting a separation solution, and distilling to obtain a distilled concentrated solution, and performing decoloration, salt leaching and concentration on the distilled concentrated solution to obtain a sodium phenylacetate concentrated solution which can be directly used for penicillin fermentation. The synthesis method disclosed by the invention is simple to operate, continuous in process unit, free of repeated process units in the process and in accordance with atom economy, and the prepared sodium phenylacetate is high in purity and high in yield. No acidic wastewater is generated in the process treatment process, nophenylacetic acid containing peculiar smell is generated, the wastewater treatment cost is low, and the process is environmentally friendly.
Owner:INNER MONGOLIA CHANGSHENG PHARMA
1,1,3,3-tetraalkylguanidine carbonyl cobalt metal organic ionic liquid and its preparation method and application
ActiveCN106995391BImprove stabilityExcellent catalytic performanceOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsEpoxyCobalt metal
The invention discloses a 1,1,3,3-tetra alkyl guanidine carbonyl cobalt metal organic ion liquid. A structure formula of the ion liquid is shown in the description. The invention also discloses a preparation method of the ion liquid and application of the ion liquid in synthesizing of 3-hydroxy carboxylate by epoxy compound hydroesterification. The 1,1,3,3-tetra alkyl guanidine carbonyl cobalt metal organic ion liquid has the advantages that guanidine cation has the double functions of stabilizing tetra carbonyl cobalt cation and using as a Lewis acid to activate epoxy compound primer; compared with the traditional Co2(CO)8 / azacycle catalytic system, the use of a nitrogen-containing organic matter is avoided; the ion liquid can be recycled and repeatedly used, the use rate of carbonyl cobalt is improved, and the production cost is reduced; the stability of the 1,1,3,3-tetra alkyl guanidine carbonyl cobalt metal organic ion liquid is high, the ion liquid can be repeatedly applied to catalysis of epoxy compound hydroesterification for multiple times, the catalytic reaction effect is good, and the separation and recycling are convenient.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Synthesis method of methyl glycolate
PendingCN114436844AHigh yieldRecyclableOrganic compound preparationCarboxylic acid esters preparationPtru catalystCarboxylic acid
The invention relates to a synthesis method of methyl glycolate, which comprises the following steps: under the condition of water insulation and oxygen insulation, contacting polyformaldehyde, a solvent, organic carboxylic acid, a stabilizer and a cobalt carbonyl catalyst, and introducing CO to carry out carbonylation reaction to generate glycollic acid; and separating the carbonylation product from the solvent, and carrying out esterification reaction on the carbonylation product and methanol to generate methyl glycolate. The method has the characteristics that the catalyst is non-corrosive to reaction equipment, the direct separation of the product and the solvent and the direct recycling of the solvent are realized, and the energy consumption of the separation process and the production cost are effectively reduced.
Owner:CHINA PETROLEUM & CHEM CORP +1
Coronene compound containing thioether in lateral chain and preparation method thereof
ActiveCN102584655BSolid-state devicesSemiconductor/solid-state device manufacturingCoroneneSide chain
Owner:BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
Method for preparing beta-lactone through carbonylation of epoxy compound under catalysis of gallium porphyrin-cobalt carbonyl
PendingCN114671831AOrganic chemistryOrganic-compounds/hydrides/coordination-complexes catalystsEpoxyPtru catalyst
The invention provides a method for preparing beta-lactone through carbonylation of an epoxy compound, which comprises the following step: in the presence of a porphyrin gallium complex and cobalt octacarbonyl, by taking CO as a carbonyl source, converting the epoxy compound into a beta-lactone compound through a carbonyl insertion ring expansion reaction. The method provided by the invention has efficient catalytic activity and excellent chemical selection, does not need a tedious catalyst preparation process, avoids the use of high-toxicity chromium metal and sensitive carbonyl cobalt salt, is high in catalyst stability, can be fed in air, is simple to operate, and is easy for large-scale production.
Owner:SHANGHAI ZHONGHUA TECH CO LTD
Method for preparing 2-(4-isobutylphenyl)propionate from 1-(4-isobutylphenyl)ethanol
ActiveCN103254070BOvercome recycling difficultiesEfficient recyclingOrganic compound preparationCarboxylic acid esters preparationPropionateAlcohol
The invention discloses a method for preparing 2-(4-isobutylphenyl)propionate from 1-(4-isobutylphenyl)ethanol (IBPE). According to the present invention, an imidazole functionalized ion liquid containing cobalt carbonyl and polyether is adopted as a catalyst to carry out a hydroesterification reaction of IBPE, carbon monoxide and an alkyl alcohol to prepare 2-(4-isobutylphenyl)propionate. The method has the following characteristics that: precious metal use is avoided, catalytic activity is good, and the catalysis system is easy to separate, and can be recycled.
Owner:QINGDAO UNIV OF SCI & TECH
Preparation method of 5-hydroxy-7,7-dimethyl-2H-indanone
InactiveCN108586195AEasy to prepareEasy to operateOrganic compound preparationHydroxy compound preparationMorpholineAlkyne
The invention discloses a preparation method of 5-hydroxy-7,7-dimethyl-2H-indanone. The method is achieved through the following steps: 1) cooling a tetrahydrofuran solution of methyl 3,3-dimethyl-4-pentenoate and dropwise adding a reducing agent and stirring so as to obtain 3,3-dimethyl-4-pentenol; 2) adding an oxidizing agent to the 3,3-dimethyl-4-pentenol and stirring and reacting to obtain 3,3-dimethyl-4-pentenal; 3) adding an ether solution of3,3-dimethyl-4-pentenal into an ether solution of magnesium propargyl bromide and stirring and reacting to obtain 5,5-dimethyl-6-ene-1-alkyne heptanol; and 4) adding cobalt carbonyl into a dichloromethane solution of 5,5-dimethyl-6-ene-1-alkyne heptanol and stirring and reacting, adding N-methyl morpholine oxide and continuously reacting to obtain the target product. The raw materials used in the method are simple and easily available; the preparation method is simple; the operation steps are simple; and synthesis cost is low.
Owner:北京汇康博源医药科技有限公司
Synthesis method of dimethyl malonate
PendingCN112239408AChange performanceUnlimited contentOrganic-compounds/hydrides/coordination-complexes catalystsPreparation by carbon monoxide or formate reactionPtru catalystPhenyl group
The invention relates to a synthesis method of dimethyl malonate, provides a novel carbonylation reaction synthesis route, and solves the problems of high cost, complex process and environmental pollution in the prior art. According to the technical scheme, the synthesis method of dimethyl malonate comprises the following steps: reacting cobalt carbonyl with a ligand to obtain a complex catalyst;and then adding methylal and carbon monoxide to react to obtain dimethyl malonate, wherein the ligand is a hexadentate chelated nitrogen ligand, and R is selected from n-octyl, phenyl, 4-methylphenylor phenoxy methyl. Therefore, the technical problem is well solved, and the method can be used for industrial production of dimethyl malonate.
Owner:CHINA PETROLEUM & CHEM CORP +1
Supported CoxMy intermetallic compound catalyst as well as preparation and use methods thereof
ActiveCN113477257AAvoid churnAvoid separabilityMolecular sieve catalystsPreparation by carbon monoxide reactionPtru catalystFormylation reaction
The invention discloses a supported CoxMy intermetallic compound catalyst and a preparation method thereof, and a method for catalyzing hydroformylation reaction of olefin to generate aldehyde by using the supported CoxMy intermetallic compound catalyst. The catalyst comprises 1-10 parts of Co, 1-30 parts of M and 40-98 parts of a carrier, wherein M is Ga, Sn, In or Ge. When the supported CoxMy intermetallic compound catalyst provided by the invention is applied to catalysis of hydroformylation reaction of olefin to generate aldehyde, loss of active metal can be remarkably avoided, and the supported CoxMy intermetallic compound catalyst also has straight-chain aldehyde selectivity comparable to the straight-chain aldehyde selectivity of a homogeneous cobalt carbonyl catalyst; and the supported CoxMy intermetallic compound catalyst is easily separated from a product after reaction, so problems in separation and recycling of the homogeneous catalyst and the product are avoided, the problem of cobalt loss caused by formation of cobalt carbonyl by a conventional heterogeneous catalyst is also avoided, and the catalyst has good industrial application prospects.
Owner:SYNFUELS CHINA TECH CO LTD
Preparation of cobalt sulfide nanomaterial and method for detecting hydrogen peroxide
InactiveCN105692719BUniform particle size distributionImprove accuracyCobalt sulfidesMaterial analysis by observing effect on chemical indicatorColor reactionOleic Acid Triglyceride
Owner:TAIYUAN UNIV OF TECH
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