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292 results about "Palladium compound" patented technology
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In chemistry, compounds of palladium(III) feature the noble metal palladium in the unusual +3 oxidation state (in most of its compounds, palladium has the oxidation state II). Compounds of Pd(III) occur in mononuclear and dinuclear forms.
Four coordinated platinum and palladium complexes with geometrically distorted charge transfer state and their applications in light emitting devices
ActiveUS20120215001A1Easy to understandSolid-state devicesPlatinum organic compoundsPlatinumLight-emitting diode
Owner:ARIZONA STATE UNIVERSITY
Carbon-intersticed metallic palladium, palladium catalyst and method for preparation thereof, and method for producing alpha,beta-unsaturated carboxylic acid
InactiveUS20060068989A1High yieldOrganic compound preparationCatalyst activation/preparationPalladium catalystMetal
A carbon-insertion-type palladium metal in which an amount of inserted carbon is 0.16 mol or more with respect to 1.0 mol of a palladium metal, and a carbon-insertion-type palladium metal in which a crystal face distance of a (111) face of a palladium metal is 2.270 Å or more are useful as raw materials of a palladium catalyst for use in an α,β-unsaturated carboxylic acid preparation reaction, and the like. The carbon-insertion-type palladium metal can preferably be prepared by reduction of palladium in a palladium compound having a chlorine content of 0 to 300 ppm.
Owner:MITSUBISHI RAYON CO LTD
Four coordinated platinum and palladium complexes with geometrically distorted charge transfer state and their applications in light emitting devices
Owner:ARIZONA STATE UNIVERSITY
Four Coordinated Platinum and Palladium Complexes with Geometrically Distorted Charge Transfer State and Their Applications in Light Emitting Devices
Owner:ARIZONA STATE UNIVERSITY
Hydrogenation catalyst and preparation method thereof
InactiveCN102430406AWith hydrogen storage functionExtend your lifeLactams separation/purificationMetal/metal-oxides/metal-hydroxide catalystsHydrogenActive component
The invention discloses a hydrogenation catalyst, characterized in that: active components are loaded on a carrier, the active components comprise 0.2-5 wt% of metallic palladium and 0.1-2.5 wt% of rare earth oxide. The catalyst is prepared by the following steps: preparing water-soluble palladium-containing compound, water-soluble rare earth compound and water into a palladium-rare earth aqueous solution, dipping a carrier in the palladium-rare earth aqueous solution to loading the palladium-containing compound and rare earth compound on the carrier to obtain a catalyst precursor; drying and roasting the catalyst precursor, then carrying out reduction processing at a temperature of 50-200 DEG C in the presence of hydrogen to reduce oxidative divalent palladium in the palladium compound to metallic palladium.
Owner:CHINA PETROLEUM & CHEM CORP +1
Plating catalyst liquid, plating method, and method for producing laminate having metal film
InactiveUS20110240482A1High working safetyLittle on environmentLiquid/solution decomposition chemical coatingPrinted circuit manufactureWater solubleElectroplating
A plating catalyst liquid which places little burden on the environment, which does not roughen the surface of a plating target, which can be easily controlled for the amount of plating catalyst applied and which is at low risk of inflammation and is highly safe, and a plating method using the plating catalyst are provided. The plating catalyst liquid includes a palladium compound, water, and a water-soluble combustible liquid serving as a combustible liquid ingredient, has a flash point of 40° C. or more and contains the water-soluble combustible liquid in an amount of 0.1 to 40 wt %.
Owner:FUJIFILM CORP
Method For Producing Cyclic Olefin Addition Copolymer, Cyclic Olefin Addition Copolymer And Use Thereof
The present invention provides a method for producing a cyclic olefin addition copolymer wherein a monomer composition containing 5 to 80 mol % of a cyclic olefin having a substituent selected from alkyl groups, alkylsilyl group, and alkylsilylmethyl group represented by formula (1) below and 20 to 95 mol % of a cyclic olefin represented by formula (2) below is addition-copolymerized in the presence of a palladium-based multicomponent catalyst containing a specific palladium compound (i), a specific phosphorus compound (ii), and an ionic boron compound or an ionic aluminum compound (iii):(one of A1 to A4 is a C4-5 alkyl group, trimethylsilyl group, or trimethylsilylmethyl group, and the others each independently are a hydrogen atom, halogen atom, or methyl group)(B1 to B4 are each independently a hydrogen atom, methyl group, or halogen atom.)
Owner:JSR CORPORATIOON
Method for preparing beta-carotene
ActiveCN110452147AHigh selectivityHigh yieldGroup 5/15 element organic compoundsBeta-CarotenePhosphonium salt
The invention provides a method for preparing beta-carotene. The method comprises the steps of subjecting a vitamin A derivative and triphenylphosphine to a reaction so as to obtain an organic phosphonium salt, and carrying out a coupling reaction in the presence of a palladium compound catalyst and a weak base compound by taking a cyclodextrin compound as a phase transfer catalyst and adopting molecular oxygen as an oxidant, thereby obtaining the beta-carotene. The reaction employs a series method to prepare beta-carotene and is high in reaction selectivity and yield, and the process is simple, so that the method facilitates industrial production.
Owner:WANHUA CHEM GRP CO LTD
Phosphine compound, its intermediate, its complex with palladium and a manufacturing method of unsaturated compounds by using the palladium complex
ActiveUS7129367B2Carboxylic acid nitrile preparationOrganic compound preparationHydrogen atomMethylenedioxy
Palladum-phosphine complexes obtained by reacting a 5 compound of formula (1) below with a palladium compound: F(I) (wherein R1 is a hydrogen atom, an alkyl group, a cycloalkyl group or a phenyl group which may be substituted; R2 and R3 are each, the same or different, an alkyl group, a cycloalkyl group or a phenyl group which may be substituted; R4 and R5 are each, the same or different, a hydrogen atom, an alkyl group, a cycloalkyl group or a phenyl group which may be substituted; R6, R7, R8 and R9 are each, the same or different, an alkyl group, a cycloalkyl group, a phenyl group which may be substituted, an alkoxyl group, a dialkylamino group, a halogen atom, a phenyl group, a benzyl group, a naphthyl group or a halogenated alkyl group; R6 and R7, R8 and R9 may be combined to form, each, a fused ring, a trimethylene group, a tetramethylene group or a 20 methylenedioxy group; p, q, r and s are each an integer of 0 to 5; and p+q, and r+s are each in the range of 0 to 5.), which is a novel and efficient catalyst for manufacturing various useful compounds
Owner:TAKASAGO INTERNATIONAL CORPORATION
Method of forming supported doped palladium containing oxidation catalysts
ActiveUS20140051567A1Internal combustion piston enginesOrganic-compounds/hydrides/coordination-complexes catalystsMetal particleSolvent
A method of forming a supported oxidation catalyst includes providing a support comprising a metal oxide or a metal salt, and depositing first palladium compound particles and second precious metal group (PMG) metal particles on the support while in a liquid phase including at least one solvent to form mixed metal comprising particles on the support. The PMG metal is not palladium. The mixed metal particles on the support are separated from the liquid phase to provide the supported oxidation catalyst.
Owner:UNIV OF CENT FLORIDA RES FOUND INC
Method for reducing alkyne into cis-form olefin
InactiveCN101704701AEfficient reductionHigh selectivityOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsOrganic solventHydrogen
The invention discloses a method for reducing alkyne into cis-form olefin. The method comprises the following steps: in inert atmosphere, putting potassium hydroxide, a catalyst and alkyne in an organic solvent, and conducting reduction reaction on alkyne, and obtaining the cis-form alefin after the reaction. In the method, the catalyst is selected from at least one of Pd (OAc)2, PdCl2, Pd / C and Pdcl2 (PPh3). The organic solvent is N, N-dimethyl fomamide and / or at least one mixture in the following solvents: toluene, dioxane, dimethyl sulfoxide and water, and N,N-dimethyl fomamide is selectedpreferably. The alkyne is aliphatic alkyne or aromatic alkyne. The method adopts cheap and safe potassium hydroxide and DMF as the precursor of hydrogen, the catalyst is simple palladium compound which is cheap and easy to obtain, and the catalyst system shows the alkyne can be reduced into the cis-form olefin, with high efficiency and selectivity.
Owner:TSINGHUA UNIV
Preparation method of palladium carbon catalyst
ActiveCN102626619AFirmly connectedEliminate Strong Restore CenterOrganic compound preparationCarboxylic compound preparationPalladium on carbonActivated carbon
The invention discloses a preparation method of a palladium carbon catalyst for hydrorefining of terephthalic acid. The method is characterized by employing the following steps of: exposing pretreated particles or molding activated carbon to light hydrocarbon solvent of titanium-containing compounds; filtering and purging with nitrogen gas; drying and impregnating the mixture into a solution of palladium-containing compound; reducing and washing the mixture to neutral, so as to obtain the palladium carbon catalyst. Compared with the prior art, the invention is characterized in that, first, grafted titanium dioxide and its cluster are firmly connected with activated carbon carrier, thereby effectively eliminating a strong reduction center on the activated carbon surface; second, the palladium carbon catalyst has high microcrystal content of metal palladium, good dispersion and high activity of catalyst. and third, the preparation method of the catalyst is simple.
Owner:CHINA PETROLEUM & CHEM CORP +1
Process for manufacturing cycloolefin addition polymer
ActiveUS20080085979A1Excellently balanced processabilityExcellently balanced mechanicalPolymer scienceAddition polymer
A process for manufacturing a cycloolefin addition polymer includes polymerizing monomers containing a cycloolefin compound using a catalyst containing a nickel compound or a palladium compound by addition polymerization in the presence of a molecular weight controlling agent in two steps, that is a step of a initiating the polymerization reaction using the monomers in an amount of not more than 80 wt % of the total monomers and a step of supplying the remaining monomers to the reaction system during the polymerization reaction. A cycloolefin addition polymer with a uniform quality, having a narrow molecular weight distribution and a controlled molecular weight, and excellently balanced processability and mechanical strength can be obtained at a high polymerization conversion rate using the process. The process can be operated at a highly controlled polymerization temperature, and is thus suitable for industrially manufacturing a cycloolefin addition polymer.
Owner:JSR CORPORATIOON
Catalyst for polymerization of norbornene
InactiveUS20060074206A1High catalytic activityHigh activityOrganic-compounds/hydrides/coordination-complexes catalystsCatalyst activation/preparationFunctional monomerAlcohol
This invention is based upon the discovery that a catalyst system which is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol is effective for polymerizing norbornene-functional monomers into polynorbornene-functional polymers. It has been further discovered that this catalyst system is more effective in polymerizing certain norbornene-functional monomers that are difficult to polymerize, such as norbornene ester monomers, than prior art catalyst systems. The activity of the catalyst systems of this invention can be further improved with respect to polymerizing some monomers by including a Lewis acid and / or a ligand, such as a phosphine or a carbene, in the system. In any case, the catalyst systems of this invention offer the advantage of being soluble in a wide variety of solvents, relatively inexpensive, and capable of polymerizing many norbornene-functional monomers that are difficult to polymerize with conventional catalyst systems. The subject invention more specifically discloses a catalyst system that is especially useful for the polymerization of norbornene-functional monomers which is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol. The present invention also reveals a process for synthesizing a norbornene-functional polymer which comprised polymerizing a norbornene-functional monomer in a solvent in the presence of a catalyst system that is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol.
Owner:THE GOODYEAR TIRE & RUBBER CO
Method for preparing methyl methacrylate by using methacrolein
InactiveCN103420835AEfficient removalIncrease profitOrganic compound preparationCarboxylic acid esters preparationPolymer sciencePtru catalyst
The invention relates to a method for preparing methyl methacrylate by using methacrolein, and mainly solves the problem that the conversion rate of the methacrolein in the production process of the heavy chemical product, namely the methyl methacrylate in the prior art is low. The method comprises the comprises the following steps: using the methacrolein, oxygen and methanol as raw materials and heating up to the reaction temperature, and performing oxidative esterification reaction under the action of a catalyst, namely a palladium compound, wherein in the reaction process, the reaction mixture is conveyed into an external cycle dehydration system in a certain flow rate for realizing dehydration in a cycling manner, so that the reaction can be balanced and performed in the positive direction, which improves the conversion rata of the methacrolein, and realizes low-power-consumption, simple, fast and continuous production; the yield of the obtained reaction product (namely the methyl methacrylate) is greater than 93%.
Owner:TAICANG HENGYI MEDICINE CHEM MATERIAL FACTORY
Method for reducing aromatic nitro to arylamine
ActiveCN106800493AMild reaction conditionsHigh selectivityCarboxylic acid nitrile preparationOrganic compound preparationNitro compoundHydrogen
The invention relates to a method for reducing aromatic nitro to arylamine. The method comprises the following steps: (1) taking an aromatic nitro compound as a raw material, water as a hydrogen source, a palladium compound, cheap and easy to obtain, as a catalyst and tetrahydroxydiboron as an additive to reduce nitro to obtain a product; (2) taking the aromatic nitro compound as the raw material, a copper salt, cheap and easy to obtain, as the catalyst, the tetrahydroxydiboron as the additive to reduce the nitro to obtain a product; and (3) taking the aromatic nitro compound as the raw material, water as the hydrogen source, and the tetrahydroxydiboron as the additive, without needing a metal catalyst, to reduce the nitro to obtain a product. A preparation method for the arylamine, which is provided by the invention, is mild in reaction condition, low in costs, environment-friendly, high in yield, and suitable for industrial production.
Owner:宜昌尚诺德生物医药科技有限公司
Platinum and palladium containing bimetallic catalyst, preparation method therefor, application of platinum and palladium containing bimetallic catalyst and aromatic-hydrocarbon saturation method
ActiveCN105521778AHigh aromatic saturationHigh activityMolecular sieve catalystsMetal/metal-oxides/metal-hydroxide catalystsReducing atmosphereSolvent
The invention relates to a platinum and palladium containing bimetallic catalyst, a preparation method therefor and an application of the platinum and palladium containing bimetallic catalyst. The preparation method for the catalyst comprises the following steps: (1) impregnating a carrier with a solution containing a palladium compound, and then, subjecting the impregnated carrier to baking, roasting and reduction sequentially, so as to obtain a palladic monometallic catalyst precursor; and (2) impregnating the palladic monometallic catalyst precursor obtained in the step (1) with a solution containing a platinum compound in a reducing atmosphere, and then, carrying out drying so as to remove the solvent. Compared with catalysts which are prepared in the prior art and have the same noble-metal content, the catalyst provided by the invention has better aromatic-hydrocarbon saturation activity.
Owner:CHINA PETROLEUM & CHEM CORP +1
N-heterocyclic carbine palladium compound containing pyridyl-2-formate or pyridyl-2,6-diformate ligand, preparation thereof and application thereof
InactiveCN102627672AGroup 8/9/10/18 element organic compoundsOrganic-compounds/hydrides/coordination-complexes catalystsCarbon numberFormate
The invention relates to a preparation method and an application of an N-heterocyclic carbine palladium compound containing a pyridyl-2-formate or pyridyl-2,6-diformate ligand. The N-heterocyclic carbine palladium compound containing the pyridyl-2-formate or pyridyl-2,6-diformate ligand is generated by reacting initial raw materials of a substituted imidazolium or imidazolium salt, palladium chloride and 2-picolinic acid or 2,6-dipicolinic acid, or the N-heterocyclic carbine palladium compound is generated in a high yield manner by using a corresponding N-heterocyclic carbine palladium chloride dipolymer and 2-picolinic acid or 2,6-dipicolinic acid as initial raw materials. The N-heterocyclic carbine palladium compound of the invention has a very high catalytic activity when being used in a C-N cross-coupling reaction of a halogenated arene and an organic amine as a catalyst. The chemical structural formula of the N-heterocyclic carbine palladium compound containing the pyridyl-2-formate or pyridyl-2,6-diformate ligand is shown in the specification. In the chemical structural formula, m is 0-4, and n is 0-3; and carbon numbers of R<1>, R<2>, R<3>, R<4> and R<5> are defined in the claim 1.
Owner:NANKAI UNIV
Vinyl acetate catalyst and preparing method thereof
ActiveCN106423284AHigh selectivityIncreased active sitesOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsLow activityMetal
The invention relates to a vinyl acetate catalyst, and aims to solve the problem that a current vinyl acetate catalyst has low activity and selectivity. According to the preparing method, the vinyl acetate catalyst is adopted, SiO2, Al2O3 or the mixture of the SiO2 and the Al2O3 is used as a carrier, and a loading activity component comprises metal palladium, metal gold, alkali metal acetate and at least one kind of dendritic macromolecular compound in compound 1 and compound 2 specified in the following formula, wherein the catalyst comprises 1-12g / L of palladium, 0.1-10g / L of gold, 10-100g / L of alkali metal acetate and 0.1-2.0 g / L of dendritic macromolecular compound and E t1-E t 16 are independently chosen from a technical scheme of C1-C3 alkyl group. During the preparing process of the vinyl acetate catalyst, the dendritic macromolecular compound is added after dipping palladium compound and gold compound and before a reduction step during the preparing of the catalyst.
Owner:CHINA PETROLEUM & CHEM CORP +1
Polyether-loaded N-heterocyclic carbene-palladium compound and preparation method and application thereof
InactiveCN101701066AAvoid dissociationPrevent inflowOrganic compound preparationGroup 8/9/10/18 element organic compoundsOrganic synthesisPolystyrene
The invention relates to a polyether-loaded N-heterocyclic carbene-palladium compound and a preparation method and application thereof, belonging to the field of organic synthesis. For the polyether-loaded N-heterocyclic carbene-palladium compound, polyether molecular chains contain chain links (I): n in the chain links (I) is equal to 1-10, R is aryl or alkyl, and X is Cl-, Br-, I-, BF4- or PF6-. Compared with polyvinyl benzene, the polyether compound has good main chain flexibility and adjustable branched chain length, and can be used for loading a catalyst to enable the catalyst to maintain higher catalytic activity and enable polymers containing polyepichlorohydin chain links, N-hydroxyl-substituted imidazolium, alkali and palladium salts to react to prepare the compound. The invention also provides the application of the compound: the compound is used for catalyzing substituting reaction of aromatic compounds Aryl-X' and alpha-H contained carboxylic ester to synthesize alpha-aryl carboxylic ester by one-step catalysis, and has mild reaction condition, high yield, good economic benefit and important application value.
Owner:LUOYANG NORMAL UNIV
Method for preparing organic carboxylic ester through combined catalysis of aryl bidentate phosphine ligand
ActiveCN111087306ACoordination mode is stableStabilize the active structureCarboxylic acid nitrile preparationOrganic compound preparationArylPtru catalyst
Owner:NANJING CHENGZHI CLEAN ENERGY CO LTD +1
Process for producing cycloolefin addition polymer
Owner:JSR CORPORATIOON
Method for cyclization reaction to synthesize indole through co-catalysis of palladium-organic nitrite
The invention discloses a method for cyclization reaction to synthesize indole through co-catalysis of palladium-organic nitrite. The method is characterized by comprising the steps of mixing at the molar ratio of a palladium compound to a 2-vinyl aniline compound containing a substituent group in oxygen atmosphere being 7.5:100 and the molar ratio of the organic nitrite to the 2-vinyl aniline compound containing the substituent group being 20:100; reacting in a solvent at 70 DEG C for 7-24h and mixing at the volume ratio of petroleum ether / diethyl ether being (200-50):1 as an eluent for column chromatography separation to obtain a target product. The organic nitrite is adopted as a cocatalyst, so that use of Cu<2+> or benzoquinone as a synergistic catalyst is avoided, a catalyst system is oxidized by using oxygen, and the method is green, economical and environmentally friendly. Corresponding Cl<->-substituted indole is efficiently synthesized through introducing a Cl<-> substituent group to an aromatic ring of 2-vinyl aniline in advance and then functionalization of different positions of the indole can be achieved through coupling reaction, so that introduction of a directing group to the indole N and control on the region selectivity are avoided, the operation is simple and a novel method is provided for functionalization of the indole.
Owner:UNIV OF SCI & TECH OF CHINA
Planarly chiral ferroceno[1,2-c]-4-quinolinone compound and preparation method thereof
InactiveCN104292275AEasy to operateEasy and efficient to prepareMetallocenesOrganic solventMostly True
The invention discloses a preparation method of a planarly chiral ferroceno[1,2-c]-4-quinolinone compound, which comprises the following steps: mixing a palladium compound, a chiral phosphine ligand, an acid, an alkali and an organic solvent, adding an N-(2-halogenophenyl)-N-substituted formamide ferrocene compound, heating and stirring to react, concentrating, and purifying to obtain the planarly chiral ferroceno[1,2-c]-4-quinolinone compound. The planarly chiral ferroceno[1,2-c]-4-quinolinone compound is disclosed as general formula I. The planarly chiral ferroceno[1,2-c]-4-quinolinone compound has the advantages of high yield and favorable antipode selectivity, and the antipode selectivity is greater than 90% in most cases. The planarly chiral ferroceno[1,2-c]-4-quinolinone compound can also be used for preparing a chiral ligand, and has very wide application range in metal catalytic asymmetric reaction.
![Planarly chiral ferroceno[1,2-c]-4-quinolinone compound and preparation method thereof](https://images-eureka.patsnap.com/patent_img/482998c3-72bc-4a6c-8ac7-05495d75469c/BDA0000574918340000021.PNG "Planarly chiral ferroceno[1,2-c]-4-quinolinone compound and preparation method thereof")
![Planarly chiral ferroceno[1,2-c]-4-quinolinone compound and preparation method thereof](https://images-eureka.patsnap.com/patent_img/482998c3-72bc-4a6c-8ac7-05495d75469c/BDA0000574918340000022.PNG "Planarly chiral ferroceno[1,2-c]-4-quinolinone compound and preparation method thereof")
![Planarly chiral ferroceno[1,2-c]-4-quinolinone compound and preparation method thereof](https://images-eureka.patsnap.com/patent_img/482998c3-72bc-4a6c-8ac7-05495d75469c/BDA0000574918340000031.PNG "Planarly chiral ferroceno[1,2-c]-4-quinolinone compound and preparation method thereof")
Owner:SHANGQIU NORMAL UNIVERSITY
Process for producing N-(hetero)arylazoles
Owner:TAKASAGO INTERNATIONAL CORPORATION
Method for producing benzo[b]thiophene compound
ActiveUS9206169B2Easy to operateHigh purityNervous disorderOrganic chemistryLeaving groupHydrogen atom
![Method for producing benzo[b]thiophene compound](https://images-eureka.patsnap.com/patent_img/b80db4ac-74fd-4557-870f-bc49021885a3/US09206169-20151208-C00001.PNG "Method for producing benzo[b]thiophene compound")
![Method for producing benzo[b]thiophene compound](https://images-eureka.patsnap.com/patent_img/b80db4ac-74fd-4557-870f-bc49021885a3/US09206169-20151208-C00002.PNG "Method for producing benzo[b]thiophene compound")
![Method for producing benzo[b]thiophene compound](https://images-eureka.patsnap.com/patent_img/b80db4ac-74fd-4557-870f-bc49021885a3/US09206169-20151208-C00003.PNG "Method for producing benzo[b]thiophene compound")
Owner:OTSUKA PHARM CO LTD
Application of metallide/palladium compound catalytic reduction system in reaction of removing allyl groups and deuteration reaction
ActiveCN108218672ACheap and easy to getSmall molecular weightCarboxylic acid nitrile preparationOrganic compound preparationIce waterNitrogen gas
The invention discloses application of a metallide / palladium compound catalytic reduction system in reaction of removing allyl groups of a compound containing the allyl groups and deuteration reaction. The reaction comprises the following steps: under protection of nitrogen gas, suspending a palladium compound and a metallide in a solvent, stirring for 5 minutes, adding the compound containing theallyl groups, reacting for 0.5-36 hours at the temperature of minus 50-120 DEG C, adding ice water to stop reaction, regulating a pH value to 3.5 by using diluted hydrochloric acid, and carrying outsolvent extraction, drying by steaming and column-chromatography purification on reaction liquid to finish the reaction.
Owner:SUZHOU UNIV
Method for preparing benzfluorenone compound by palladium as catalyst
ActiveCN105085208AEasy to manufactureMild reaction conditionsOrganic compound preparationCarbonyl compound preparationSynthesis methodsReaction temperature
The invention relates to an organic compound synthetic method and provides a method for preparing a benzfluorenone compound by palladium as a catalyst. The method solves the problem that the existing benzfluorenone compound synthesis method utilizes difficultly prepared raw materials and has a high reaction temperature, a lot of reaction processes, a low yield and long reaction time. The method comprises that o-alkynylchalcone as a raw material and a fluoride reagent as an oxidizing agent undergo a reaction in the presence of a palladium compound as a catalyst to produce the benzfluorenone compound shown in the structural formula (II). The method utilizes a base metal to replace an expensive precious metal and realizes a reaction under mild conditions. The reaction formula is shown in the following description.
Owner:HUAWEI TEHCHNOLOGIES CO LTD
Catalyst for polymerization of norbornene
InactiveUS7148302B2High catalytic activityHigh activityOrganic-compounds/hydrides/coordination-complexes catalystsCatalyst activation/preparationPolymer scienceFunctional monomer
This invention is based upon the discovery that a catalyst system which is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol is effective for polymerizing norbornene-functional monomers into polynorbornene-functional polymers. It has been further discovered that this catalyst system is more effective in polymerizing certain norbornene-functional monomers that are difficult to polymerize, such as norbornene ester monomers, than prior art catalyst systems. The activity of the catalyst systems of this invention can be further improved with respect to polymerizing some monomers by including a Lewis acid and / or a ligand, such as a phosphine or a carbene, in the system. In any case, the catalyst systems of this invention offer the advantage of being soluble in a wide variety of solvents, relatively inexpensive, and capable of polymerizing many norbornene-functional monomers that are difficult to polymerize with conventional catalyst systems. The subject invention more specifically discloses a catalyst system that is especially useful for the polymerization of norbornene-functional monomers which is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol. The present invention also reveals a process for synthesizing a norbornene-functional polymer which comprised polymerizing a norbornene-functional monomer in a solvent in the presence of a catalyst system that is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol.
Owner:THE GOODYEAR TIRE & RUBBER CO
Catalyst containing palladium compound, preparation method and application thereof
InactiveCN106000469AThe synthesis method is simpleSynthetic method is fastOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsArylAcetic acid
The invention discloses a catalyst containing palladium compound, a preparation method and an application thereof. According to a compounding method of the palladium compound PdBr2(PPh3)2, o-chloro pyridine is taken as an initial raw material, reacts with methyl iodide and then reacts with tetra (triphenylphosphine) palladium. According to the compounding method of the palladium compound PdI2(PPh3)2, o-bromopyridine is taken as the initial raw material, reacts with iodoacetic acid and then reacts with tetra (triphenylphosphine) palladium. The method for compounding the target product provided by the invention is simple, easy to operate and control and also has the advantages of high product purity and high yield. Such a compound can be applied to the Heck coupling reaction of aryl halogen and ethyl acrylate and has ultrahigh catalytic activity.
Owner:TIANJIN NORMAL UNIVERSITY
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