60 results about "Tricyclohexylphosphine" patented technology

The invention discloses a complex and application of monophosphine monoazacyclo-carben nickel containing tricyclic hexyl phosphine. The molecular formula of the complex of the monophosphine monoazacyclo-carben nickel is (PCy3)Ni[(RNCHCHNR)C]X2; in the molecular formula, the PCy3 is tricyclic hexyl phosphine; the R is tertiary butyl, 2,6-diisopropyl phenyl or mesitylene; the X is chlorine or bromine. The complex of monophosphine monoazacyclo-carben nickel containing tricyclic hexyl phosphine is simple to prepare, easy to operate, easy in purification of products and high in yield, can stably exist in air, and can efficiently catalyze cross coupling reaction of aryl methyl ether and aryl Grignard reagent.

A polymerizable composition is obtained by mixing a metathesis polymerization catalyst including benzylidene(1,3-dimethyl-4-imidazolidin-2-ylidene)(tricyclohexylphosphine)ruthenium dichloride, a cycloolefin monomer such as 2-norbornene or tetracyclo[6.2.1.13,6.02,7]dodec-4-ene, a chain transfer agent such as allyl methacrylate, and hollow particles such as Shirasu balloons. A crosslinkable resin composite is obtained by coating or impregnating the polymerizable composition onto or into a support medium, and carrying out bulk polymerization of the polymerizable composition. A crosslinked resin composite is obtained by crosslinking the crosslinkable resin composite.

A method of controlled curing by a metathesis reaction upon mixing its components, the method including the step of mixing an olefin-containing substrate, a metathesis catalyst, and a reaction control agent. The metathesis catalyst is a ruthenium or osmium carbene complex catalyst, such as one containing an alkylidene ligand with basicity higher than that of tricyclohexylphosphine (PCy3) and a neutral electron donor ligand with a basicity lower than that of PCy3, whereby the catalyst initiates the metathesis reaction of the composition upon mixing with the substrate. The reaction control agent is effective to slow the progress of the metathesis reaction and prevent its completion in the absence of an elevated temperature. The control agent may be a hydrocarbon containing carbon-carbon double bonds and / or triple bonds, or maybe a modified hydrocarbon with one or more Group 14 or 15 atoms. Prior to catalyst deactivation, the mixture is exposed to an elevated temperature to accelerate the catalyst and allow the metathesis reaction to proceed toward completion.

A polymerizable composition is obtained by mixing a metathesis polymerization catalyst including benzylidene(1,3-dimethyl-4-imidazolidin-2-ylidene)(tricyclohexylphosphine)ruthenium dichloride, a cycloolefin monomer such as 2-norbornene or tetracyclo[6.2.1.13,6.02,7]dodec-4-ene, a chain transfer agent such as allyl methacrylate, and hollow particles such as Shirasu balloons. A crosslinkable resin composite is obtained by coating or impregnating the polymerizable composition onto or into a support medium, and carrying out bulk polymerization of the polymerizable composition. A crosslinked resin composite is obtained by crosslinking the crosslinkable resin composite.

The invention belongs to the technical field of molecular probes, and discloses a probe with functions of successive imaging and killing of bacteria and cancer cells and application of the probe. Thestructure of the probe is shown as a formula I, wherein X is preferably hydrogen; Y is preferably a linking bond; Z is preferably O; R is preferably hydrogen; W is preferably absent; L is preferably aC1-C16 alkylene ether group; T<+> is one of tricyclohexylphosphine salt cations, triphenylphosphine salt cations and pyridine cations; and Q<-> is a monovalent anion. The probe disclosed by the invention is applied to preparation of antibacterial and / or anticancer drugs and preparation of a fluorescence imaging agent. The probe provided by the invention realizes dual effects of antibiosis and anticancer by increasing permeability of bacterial cell membranes and destroying the structure of mitochondria in cancer cells, and has successive imaging and killing functions of bacteria and cancer cells.

The invention relates to a norbornene, tetrafluoroethylene and N-phenyl maleimide ternary copolymerization catalyst and a ternary copolymerization method. The ternary copolymerization method is characterized by comprising the steps of dissolving bis(tricyclohexylphosphine)palladium dichloride and a ligand in a first solvent in a 3-mouth flask in a dry inert atmosphere so as to obtain a mixed solution; dripping titanium iso-propylate to the mixed solution at 150-250 rpm; after the dripping is finished, continuing to stir the materials at a temperature of 30-50 degrees centigrade for 30-50 minutes to obtain a palladium-titanium complex catalyst; taking and adding the norbornene, tetrafluoroethylene and N-phenyl maleimide monomers to a nitrogen charged high pressure kettle which is vacuumized for multiple times; adding a second solvent to the high pressure kettle to dissolve the monomers; and then adding the palladium-titanium complex catalyst to the high pressure kettle and enabling the materials in the high pressure kettle to react at a certain temperature and under a certain pressure; pouring a reaction product into ethanol solution containing hydrochloric acid; washing obtained precipitates by using ethanol to be neutral; and drying the washed precipitates in a vacuum manner to obtain a norbornene, tetrafluoroethylene and N-phenyl maleimide ternary copolymer.

The invention discloses a 1,10-phenanthroline monohydrate-based main material, taking an aryl-substituted amino unit as the main material of a power supply unit. The invention also provides a preparation method of the main material, comprising the following steps: (1) preparing 9-(3-bromophenyl)carbazole; (2) preparing 9-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)carbazole; (3) under nitrogen protection, adding palladium acetate and tricyclohexylphosphine into a mixed solution of 3-bromo-1,10-phenanthroline, the 9-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)carbazole, a potassium carbonate aqueous solution, ethanol and toluene, and generating Phen-m-PhCz. The material is simple to synthetize and purify, has better solubleness and film form, is easy for hole and electron injection, and has important application prospect in organic electroluminescence devices.

The present invention belongs to the field of polymer materials, and particularly relates to a catalyst composition and a terpolymer synthesis method. The catalyst composition comprises a Schiff base trivalent cobalt compound, a Schiff base divalent cobalt compound and a co-catalyst, wherein the Schiff base trivalent cobalt compound is one or a plurality of materials selected from compounds represented by formulas I-III, the Schiff base divalent cobalt compound is one or a plurality of materials selected from compounds represented by formulas IV-VI, and the co-catalyst comprises one or a plurality of materials selected from bis(triphenylphosphine)iminium chloride, 4-dimethylamino pyridine, N-methylimidazole, tricyclohexylphosphine, tetramethylammonium bromide and tetrabutylammonium bromide. According to the present invention, by using the catalyst composition, propylene oxide, carbon dioxide and lactide can be synthesized into the copolymer having the gradual multi-block structure, wherein the glass transition temperature of the copolymer can be up to more than 50 DEG C. The formulas I-VI are defined in the specification.

The invention relates to a synthesis method of a ruthenium carbene catalyst, which comprises the following steps: (1) adding benzyl halide and triphenylphosphine into a reactor, reacting in a medium,and reacting the obtained reaction product under the action of a strong alkali to obtain a first intermediate product; (2) reacting the first intermediate product with triphenylphosphine ruthenium chloride in a solvent, replacing triphenylphosphine with tricyclohexylphosphine, filtering and washing to obtain a ruthenium carbene complex precursor; and (3) carrying out a complex addition reaction onthe ruthenium carbene complex precursor and a functional ligand to obtain the target product that is the ruthenium carbene catalyst. Compared with the prior art, the method has the characteristics ofcapability of efficiently controlling the reaction speed, short preparation period, simplicity in operation, stable process, environmental friendliness, good atom economy and the like, and has a relatively great application prospect in the aspect of industrial amplification.

The invention relates to a preparation method for 9-fluorenone and T type oligomeric phenylene skeleton compounds. The method includes: under the condition of 90-100DEG C, in a toluene solution, taking palladium acetate and tricyclohexylphosphine as the catalytic system, and adopting cesium carbonate as alkali, reacting o-dihalogenated aromatic hydrocarbon with arylboronic acid or aryl boric acid ester under CO atmosphere for 12h, thus obtaining a series of 9-fluorenone and T type oligomeric phenylene skeleton compounds. The method provided by the invention adopts simple, economical and easily available raw materials as the substrate, under the CO balloon pressure, palladium catalyzed carbonylation three-component cascade reaction is carried out to realize synthesis of 9-fluorenone compounds. Through bifunctionalization, Pi conjugated system expanded T type oligomeric phenylene skeleton compounds that are difficult to realize by previous methods can be constructed by one step, and the compounds have very great application prospects in pharmaceutical synthetic intermediates and organic photoelectric material science.

The invention discloses a method for production of tricyclohexylphosphine and belongs to the field of organic synthesis. The method comprises that triphenylphosphine oxide as an initial raw material undergoes a hydrogenation reaction in the presence of a catalyst to produce an intermediate tricyclohexylphosphine oxide; and the intermediate tricyclohexylphosphine oxide is reduced by KBH4-AlCl3 to form tricyclohexylphosphine. The method reduces a production cost, improves a product yield and is suitable for industrial production.

The invention discloses a method for synthesizing a second generation Grubbs catalyst, which relates to a catalyst, in particular to a metal carbine compound (H2IMes)(PCy3)(Cl)2Ru=CHPh(H2IMes is 1,3-di-(2,4,6-trimethylphenyl)imidazole alkyl, and PCy3 is tricyclohexyl phosphine) with favorable olefin double-decomposition catalytic activity, namely the second generation Grubbs catalyst. The method comprises the following step of reacting a zero valence ruthenium compound Ru(p-cymene)(COD)(p-cymene is paracymene, and COD is 1,5-cyclooctadiene) with PCy3, PhCHCL2 and a nitrogen heterocyclic carbine compound in toluene or other hydrocarbon solvents to obtain the second generation Grubbs catalyst. The invention has low cost and easy acquisition of used raw materials, simple and safe operation process, easy control and high yield and is particularly suitable for industrialized large production.

The invention discloses a composite metal photocatalysis system which is represented by Ni-M-X-Y-Z, wherein M is selected from the group consisting of Al, Ag, Bi, Cd, Ge, Sb and Sn; x is selected fromthe group consisting of triphenylphosphine, triethylphosphine, tributylphosphine, tri-tert-butylphosphine and tricyclohexylphosphine; Y is selected from the group consisting of carbon nanorods, molecular sieves, ordered mesoporous carbon and silicon dioxide; Z is selected from the group consisting of diphenyl disulfide, dicumyl peroxide, hydrazine and 2,4-dinitrophenylhydrazine; the mass fractionof Ni is 10-20%; the mass fraction of M is 20-30%; the mass fraction of X is 20-40%; the mass fraction of Y is 15-40%,; and the mass fraction of Z is 10-30%. The catalytic system is used for preparing 1,1,2,3,3-pentamethylindane through free radical cycloaddition of alpha-methylstyrene and 2-methyl-2-butene, an conversion rate is larger than 90%, and selectivity is larger than 85%; and a catalystis stable and not prone to loss in the free radical cycloaddition reaction. A method provided by the invention is easy to operate and good in economic benefit.

The invention discloses a method for production of tricyclohexylphosphine and belongs to the field of organic synthesis. The method comprises that triphenylphosphine oxide as an initial raw material undergoes a hydrogenation reaction in the presence of a catalyst to produce an intermediate tricyclohexylphosphine oxide; and the intermediate tricyclohexylphosphine oxide is reduced by KBH4-AlCl3 to form tricyclohexylphosphine. The method reduces a production cost, improves a product yield and is suitable for industrial production.

The invention discloses a self-repairable photosensitive weld-retarding dry film. According to the invention, dicyclopentadiene and ethylidene norbornene are coated in microcapsule with the diameter of 1-10 [mu]m formed by urea-formaldehyde resin, the microcapsule is mixed with a carboxyl-containing alkali soluble polymer, a vinyl-containing unsaturated monomer or oligomer, a photoinitiator, an auxiliary agent, dicyclopentadiene, ethylidene norbornene, and bis(tricyclohexylphosphine)benzylidine ruthenium dichloride, a support is coated by a mixture and then dried; the upper layer is applied with a polymer cover membrane, and then the self-repairable photosensitive weld-retarding dry film is prepared. After a self-repairable material is introduced into the weld-retarding dry film, the weld-retarding dry film can realize self repairing when the defects of crack and cavity are generated, anti-welding performance and insulating property of a circuit board are guaranteed, and the usage life of the circuit board is greatly prolonged.