110 results about "Pentamethylcyclopentadiene" patented technology

The invention discloses an iridium complex as well as a preparation method and an application thereof. The iridium complex is monochloro-mono-meta-methoxybenzaldehyde-4-phenyl-3-thiosemicarbazide-pentamethyl cyclopentadienyl iridium (III) and can be applied to preparation of medicines for treating cancers, and the structural formula of the complex is shown in the specification.

The invention discloses a rhodium complex as well as a preparation method and application thereof. The rhodium complex is monochloride o-mono-methoxy benzaldehyde acetal 4-methyl-3-thiosemicarbazide-pentamethylcyclopetadienyl-rhodium (III), and the rhodium complex can serve as the application for preparing drugs for treating cancers. The structural formula of the rhodium complex is shown in the Specification.

The invention relates to a norbornene, styrene and nikasol ternary polymerization catalyst and a ternary polymerization method. The preparation method of the catalyst comprises the steps that (pentamethyl cyclopentadiene) iridium chloride, aluminum alkyl and a ligand are dissolved into a first solvent in a dry three-mouth flask in the inertia atmosphere, stirring is performed at the constant temperature of 20-50 DEG C at the speed of 110-130 rpm for 20-50 min, and an iridium-aluminum complex catalyst is obtained. The polymerization method comprises the steps that a norbornene monomer, a styrene monomer and a nikasol monomer are taken and added into a reaction kettle, and a second solvent is added for dissolution; then, the iridium-aluminum complex catalyst is added, a reaction is performed under the certain stable pressure, and the product is washed to obtain the terpolymer. Catalytic activity can be generated at low temperature, norbornene, styrene and nikasol ternary polymerization is catalyzed, the reaction temperature is low, the catalysis efficiency is high, the copolymer yield is high, and the terpolymer is good in photoetching performance.

The invention discloses a 4-aryl-2-(2-(trifluoromethyl)aryl)quinazoline compound and a preparation method thereof. The preparation method comprises the following steps: taking 2,4-diarylquinazoline as a reaction substrate, carrying out a reaction with NIS under the catalytic action of pentamethylcyclopentadienylrhodium (III) chloride dimer/silver hexafluoroantimonate under a condition of 80 DEG C, carrying out a reaction with a sulfur trifluoromethylation reagent, and taking copper iodide as a catalyst, wherein the reaction temperatire is 85 DEG C, and the reaction time is 7-10 hours; performing carbon hydrogen bond activation process, thereby obtaining the 4-aryl-2-(2-(trifluoromethyl)aryl)quinazoline compound. The preparation method disclosed by the invention is mild in reaction conditions, easy and convenient to operate, low in cost, few in side reactions, high in product purity and convenient for separation and purification and can be suitable for large-scale preparation, and the obtained product has high drug activity and excellent potential application prospects.

The invention discloses a catalyst for catalyzing formaldehyde or a derivative thereof to prepare hydrogen, and a synthesis method and application thereof. The chemical formula of the catalyst is Ru(Y)BnXm, wherein Y comprises any one selected from the group consisting of 4-methylisopropylphenyl, pentamethylcyclopentadienyl, phenyl, tolyl, trimethylphenyl, 1,2,4, 5-tetramethylphenyl and hexamethylphenyl; B comprises H2O or NH3; and X comprises any one selected from the group consisting of PO4, NO3, BF4, SO4 and PF6, or a mixture of two or more selected from the group. The synthesis method forthe catalyst comprises the following steps: providing [Ru(Y)]nZm, dispersing [Ru(Y)]nZm in water to form a suspension, controlling the temperature of the suspension to be in a range of 0 and 100 DEG C, then adding a silver salt, and carrying out a reaction, wherein Ru(Y)BnXm is obtained after completion of the reaction. The catalyst of the invention has high catalytic activity, is easily soluble in water, does not need strong alkali; the concentration of carbon monoxide in generated gas is less than 10 ppm; and the catalyst can be directly applied to a hydrogen-oxygen fuel cell system and eradicates the problem of fuel cell poisoning caused by high concentration of carbon monoxide.

The invention discloses a synthetic method of a spirocyclic compound containing 1-indanone skeleton. The method comprises the following steps: taking aromatic carboxylic acid and alpha, beta-unsaturated ketone as raw materials, taking any of p-cymene ruthenium chloride dimer, pentamethylcyclopetadienyl rhodium chloride dimmer, tris(acetonitrile)(pentamethylcyclopentadienyl)rhodium bis(hexafluoroantimonate) as a catalyst, taking any of anhydrous manganese acetate, manganese acetate tetrahydrate, anhydrous zinc acetate and zinc acetate as an additive, and thus synthesizing the spirocyclic compound containing 1-indanone skeleton by adopting a one-step method. The reaction comprises four steps such as conjugate addition reaction of aromatic carboxylic acid ortho-position C-H bond and alpha, beta-unsaturated ketone, intramolecular dehydration, Michael addition with second molecular alpha,beta-unsaturated ketone and intramolecular aldol condensation. The synthetic method has the characteristics that the raw materials are low in price and easy to obtain, the efficiency is high, the atom utilization rate is high, the reaction operation is simple and four new C-C bonds are constructed by adopting the one-step method.

The invention provides novel catalysts and methods of using catalysts for controlling the position of a double bond and cis/trans-selectivity in isomerization of terminal alkenes to their 2-isomers. Catalysts such as (pentamethylcyclopentadienyl)Ru formulas 1 and 3 having a bifunctional phosphine can be used in the methods. A catalyst loading of 1 mol % of formulas 1+3 can be employed for the production of (E)-2-alkenes at 40-70° C.; lower temperatures can be used with higher catalyst loading. Acetonitrile-free catalysts can be used at lower loadings, room temperature, and in less than a day to accomplish the same results as catalysts 1+3. The novel catalyst systems minimize thermodynamic equilibration of alkene isomers, so that the trans-2-alkenes of both non-functionalized and functionalized alkenes can be generated.

The invention relates to a norbornene, pentene and vinylene carbonate ternary copolymerized catalyst and a ternary copolymerizing method. The method for preparing the catalyst comprises the following steps: dissolving bis(pentamethylcyclopentadienyl) hafnium dichloride (iV) and ligand in a first solvent in a dried three-mouth flask at an inert gas atmosphere, dripping aluminum alkyl under 200-400rpm, stirring at constant temperature at the same stirring speed at constant temperature of 20-60 DEG C for 20-60 minutes to obtain a hafnium-aluminum complex catalyst; adding norbornene, pentene and vinylene carbonate into a reaction kettle which is vacuumized for multiple times and inflated with nitrogen, adding a second solvent and dissolving; adding the hafnium-aluminum complex catalyst, and reacting for 1-6 hours at certain temperature and pressure; and pouring the product obtain in the reaction into a hydrochloric acid-containing alcohol solution, washing the precipitate to be neutral with alcohol, and drying in vacuum to obtain the norbornene, pentene and vinylene carbonate ternary copolymerized catalyst.

The invention discloses a 2-(2-iodoaryl)quinazoline compound and a preparation method thereof. The 2-(2-iodoaryl)quinazoline compound is prepared by using 2-arylquinazoline as a reaction substrate through the process of carbon-hydrogen bond activation iodination with iodosuccinimide under the catalytic action of dichloro(pentamethylcyclopetadienyl)rhodium (III) dimer/silver hexafluoroantimonate, wherein the reaction temperature is 85 DEG C, and the reaction time is 1 to 2 hours. The preparation method provided by the invention has the advantages of high yield, excellent reaction chemical selectivity, mild reaction conditions, simple and convenient operation, low cost, less side reaction and high product purity; and the product disclosed by the invention is a novel compound, facilitates to separation and purification, is applicable to large-scale preparation, and has good application value and potential biological activity.

The invention discloses a synthetic method of a fluorine-containing secondary amine compound. Pentamethylcyclopentadienyl iridium chloride dimer is used as a metal catalyst, fluoroalkyl comes from fluorinated alcohol, alkali is used as a co-catalyst, and the fluorine-containing secondary amine is prepared via the following step: primary amine reacts with the fluorinated alcohol under the action of the transition metal iridium catalyst and the alkali in an organic solvent to obtain the fluorine-containing secondary amine compound. The method overcomes the defects in the prior art that the fluorine-containing alkylating agent is high in toxicity and instable and needs to be prepared in advance, the reaction operation is complex, the steps are fussy and the like, and can obtain considerable yield. The adopted fluorinated alcohol is readily available, stable in chemical property and low in toxicity. The method is simple in reaction, has very high atom economy and step economy, and is energy-saving, environment-friendly and simple in operation. By adopting [Cp*IrCl2]2 as the catalyst, ligands are not needed, and the system is easy to realize.

The invention provides a rare-earth antifungal agent composition. A certain amount of nano titanium dioxide silver antifungal agent is dispersed in ethyl alcohol, bis(pentamethylcyclopentadienyl)cobalt, cyclopentadienylrhenium tricarbonyl, benzoyl peroxide, polyvinyl alcohol and sodium dodecyl benzene sulfonate are added according to the proportions, and a nano titanium dioxide silver antifungal agent micro suspension product containing rare earth is obtained through surface polymerization.

The invention discloses a synthesis method for 2,3-diphenyl-1H-indene-1-one derivatives. The synthesis method comprises the steps of: adding benzoyl formic acid, a diphenyl acetylene compound, pentamethyl cyclopentadiene dichloride iridium, copper acetate, silver hexafluoroantimonate and a silver hexafluoroantimonate into an organic solvent; heating for reaction in the presence of air; and after the reaction, carrying out post-treatment to obtain the 2,3-diphenyl-1H-indene-1-one derivative. The method synthesizes the 2,3-diphenyl-1H-indene-1-one derivative in one step through simple and easilyavailable raw materials, so that the conversion efficiency is high and the atomic economical benefit is good. Meanwhile, the synthetic method is simple to operate, high in reaction yield and wide inprimer adaptability.

The invention relates to a preparation method of a polytetrafluoroethylene core-shell polymer containing rare earth. The polytetrafluoroethylene polymer consists of a core and a shell, wherein the shell is a polymer of a polytetrafluoroethylene emulsion, bis(tricarbonyl cyclopentadienyl molybdenum) and (3R)-1-[4,4-bis(3-methyl thiophene)-2-yl)but-3-enyl]piperidine-3-carboxylic acid, butyl acrylate and bis(pentamethylcyclopentadiene)cobalt; the shell is a polymer of styrene, 1-heptylene-1,2-hypoboric acid bis(2,3-dimethyl-2,3-butanediol)ethyl ester; the PTFE (Polytetrafluoroethylene) composite emulsion with good stability and coating property is prepared by adopting seeded emulsion polymerization.

The invention relates to a tetrahydrofuran C-H multiphase oxidation method. 4,4'-[4-(trimethoxy silane) butyl]-2,2'-bipyridine is embedded into an organic silicon nanotube, and dichloro(pentamethylcyclopentadienyl) iridium dimer is coordinated into the nanotube to obtain an iridium-based bipyridine-organic silicon nanotube multiphase catalyst. The catalyst is mixed with tetrahydrofuran, and a reaction is performed at a normal temperature by taking sodium periodate as an oxidant and heavy water as a solvent. The catalyst has a clear porous structure, a large specific surface area and uniform active sites, and has a very good catalytic effect on tetrahydrofuran C-H oxidation, and because the catalyst has the characteristics of relatively high stability and easy recovery, the catalyst has a very good actual application prospect in industry.

The invention discloses a method for synthesizing a 2,4-dialkylene-substituted indole compound with a one-pot process. The method comprises steps as follows: indolecarboxylic acid, ethylene compounds, [Cp*RhCl2]2(pentamethylcyclopentadienerhodium chloridedimer), alkaline copper carbonate, potassium acetate and silver hexafluoroantimonate are added to an organic solvent and heated for a reaction, aftertreatment is performed after a complete reaction, and the 2,4-dialkylene-substituted indole compound is obtained. According to the method, with the adoption of specific catalysts and the alkaline additive, C-H bonds of indolecarboxylic acid and ethylene compounds are subjected to activation, alkylation and decarboxylation reactions at the same time, the operation conditions are simple, and the reaction yield is high.

The invention provides a preparation method of carbon tetrachloride purification adsorbent. The preparation method comprises the steps of adding water and polyvinyl alcohol into a reaction kettle and evenly mixing to form a water phase; adding styrene, 1,5,9-cyclododecatriene, 3-allyloxy-2-hydroxy propane sulfonic acid, methacrylamide and pentamethyl cyclopentadienyl isopropyl titanate into a reaction kettle and evenly mixing to form an oil phase; adding an oil-phase solution into the reaction kettle where the water phase is prepared; reacting in an appropriate temperature; acetone extracting reaction mixture after reaction is finished; drying in a vacuum mode to obtain the carbon tetrachloride purification adsorbent. The carbon tetrachloride purification adsorbent is large in specific surface area, stable in property and high in product purity after adsorption.

The invention discloses a practical method for synthesizing a novel bioactive molecule with N-methoxy-amide as a nitrogen source. The practical method comprises the following steps: sequentially adding an aryl-substituted nitrogen heterocyclic compound, a dichloro-(pentamethyl cyclopentadienyl) iridium (III) dimer, silver hexafluoroantimonate and N-methoxybenzamide into a glass reaction tube and performing a reaction at the temperature of 120-140 DEG C by taking 1,2-dichloroethane as a solvent to obtain the novel bioactive molecule synthesized by taking N-methoxy-amide as the nitrogen source.With adoption of the method disclosed by the invention, obtained products are diversified in type, can be directly applied to synthesis and decoration of pharmaceutical molecules and can also be usedfor other further reactions; meanwhile, the method is safe and easy in synthesis route, low in cost, simple in reaction operation and aftertreatment process and good in selectivity; methanol is an only by-product, therefore, the practical method conforms to the concept of green chemistry.

The invention pertains to chemical industry, particularly relates to a norbornene ring-opening metathesis polymer and preparation of addition polymer. Catalyst system is composed of two portions of A and B, A portion is trivalent iridium catalyst in half-sandwich structure, which is represented by formula Cp*IrL, wherein Cp* represents ligand of 1,2,3,4,5-Pentamethylcyclopentadiene, L represents bidentate ligand containing O, N heteroatom which is capable of coordinating with late transition metal; B portion is represented by methylaluminoxane (MAO) or modidied methylaluminoxane (MMAO). A portion of the invention is simple to prepare, stable in air. Purified norbornene ring-opening metathesis polymer and catalysate of addition polymer can be respectively obtained by regulating proportion of A and B portion.

The invention relates to an iridium based dipyridine-organic silicon nanotube heterogeneous catalyst and a preparation method thereof. A composite of 4,4'-[4-(trimethoxysilane)butyl]-2,2'-dipyridine coordinated dichloro(pentamethylcyclopentadienyl) iridium dimer is filled into an organic silicon nanotube. Potassium chloride, a template, a organic silane precursor 1,4-di(triethoxysilyl)benzene, and 4,4'-[4-(trimethoxysilane)butyl]-2,2'-dipyridine are added into a hydrochloric acid solution in sequence to obtain a mixture; the mixture is added into a mixed solution of ethanol and hydrochloric acid to obtain a solid product namely dipyridine-organic silicon nanotube, and finally the dipyridine-organic silicon nanotube and dichloro(pentamethylcyclopentadienyl) iridium dimer carry out reactions to obtain the iridium based dipyridine-organic silicon nanotube heterogeneous catalyst. The catalyst has a clear channel structure and large specific surface area. A novel feasible method is provided for the immobilization of homogeneous molecular catalysts.

The invention discloses an organic metal rhodium compound and a preparation method and application thereof. The organic metal rhodium compound is chlorine-(1E,6E)-1,7-bis(3,4-dimethoxyphenyl)-4-(p-methylamino phenyl vinyl)-1,6-heptadiene-2,5-diketone-pentamethyl cyclopentadienyl rhodium (III). The organic metal rhodium compound can be applied to preparation of a drug for treating cancer and resisting bacteria. The structural formula of the organic metal rhodium compound is shown in the specification.

The invention discloses an alpha,alpha-difluoroallyl aromatic hydrocarbon compound containing total carbon quaternary carbon center and a preparation method thereof. N-methoxy benzamide compound, sodium acetate, dichloropentamethyl cyclopentadienylrhodium(III) dimer and 1,1-difluoroallenes are sequentially added to a reaction flask containing a solvent, and then react under stirring at room temperature. After the reaction is completed, the alpha,alpha-difluoroallyl aromatic hydrocarbon compound containing total carbon quaternary carbon center is separated by silica gel column chromatography. As that preparation method of the invention has mild reaction condition, simple operation, raw materials adopted are low in cost, simple and easy to obtain, and tedious pre-functionalization steps areavoided, the substrate has wide application range. The alpha,alpha-difluoroallyl aromatic hydrocarbon compound prepared by the preparation method can be used as a class of novel alpha,alpha-difluoroolefin compounds containing total carbon quaternary carbon center with novel structures, and the difluoroolefin compounds have a broad application prospect in the research and development of drugs and materials.