28 results about "Cyclooctadiene" patented technology

A method of rapidly forming an elastomer with tunable properties is described herein. The method includes preparing a monomer solution comprising a catalyst and one or more monomers including 1,5-cyclooctadiene (COD). The one or more monomers may further include dicyclopentadiene (DCPD), and each of the COD and the DCPD may be present in the monomer solution at a predetermined volume percentage. A region of the monomer solution is activated to initiate an exothermic polymerization reaction and generate a self-propagating polymerization front, which moves through the monomer solution and polymerizes the one or more monomers. Thus, an elastomer having predetermined properties is rapidly formed.

The invention relates to a preparation method of a hydrolysis modified organic silicon high-temperature-resistant anticorrosive coating, and belongs to the technical field of anticorrosive coatings. The preparation method comprises the following steps: heating 1, 1 '-bis (dimethylsilyl) ferrocene, methylbenzene, chloroplatinic acid, 2, 2, 3, 3, 4, 4, 4-heptafluorobutyl acrylate and bis-(2-methylallyl) cyclooctyl-1, 5-diene ruthenium, and reacting to obtain an intermediate product 1; weighing methyltrimethoxysilane, phenyltrimethoxysilane and the intermediate product 1, uniformly stirring and mixing, slowly dropwise adding diluted hydrochloric acid, hydrolyzing, and heating to react, so as to obtain modified silicon resin; adding the modified silicon resin into petroleum ether, and adding silicone oil, an organic tin catalyst, a bis-ammonia coupling agent, filler and a curing agent to obtain the anticorrosive paint.

This invention provides a neutral-electron-reversed carbene, its preparation method, and its applications, belonging to the fields of organic chemistry and organic catalysis. The neutral-electron-reversed carbene described in this invention has the structure shown in formula (I). This invention synthesizes the neutral-electron-reversed carbene in one step by reacting a diazo compound as a precursor with a rhodium complex, followed by nitrogen removal and COD (1,5-cyclooctadiene) removal processes. The reaction conditions of this invention are simple, and the yield is good. Stable separation of neutral-electron-reversed carbene is achieved for the first time.

The invention provides a construction method of a light-stable high-photon-number fluorescent probe and application of the light-stable high-photon-number fluorescent probe in single-molecule and super-resolution fluorescence imaging. The probe is efficiently prepared through one-pot multi-component reaction of aldehyde containing cyclooctatetraene, amine containing benzothiazole methyl sulfone, fluorophore carboxylic acid with a click tag and tert-butyl isocyanide. The probe can realize cysteine site specific labeling through nucleophilic aromatic substitution, the cyclooctadiene light stabilizer can effectively quench triplet, photon output and photobleaching resistance are improved synergistically, and the probe and the cyclooctadiene light stabilizer are suitable for super-resolution fluorescence imaging of biomacromolecules such as single molecules and nucleopore proteins. And a high-performance probe is provided for an advanced super-resolution fluorescence microscopy technology.

Provided are a method for producing an anion exchange resin which is capable of producing an electrolyte membrane with excellent mechanical property (strength).A monomer for forming a hydrophobic group is reacted with a monomer for forming a hydrophilic group in the presence of bis(1,5-cyclooctadiene)nickel(0) as a catalyst, 2,2′-bipyridine as a co-ligand, a bromide or an iodide as a co-catalyst, and a reducing agent to produce an anion exchange resin where the hydrophobic group is connected to the hydrophilic group via direct bond, in which a mole number of bis(1,5-cyclooctadiene)nickel(0) is 0.3 to 1.8 times a total mole number of the monomer for forming a hydrophobic group and the monomer for forming a hydrophilic group.

The invention discloses a synthetic method of an organic phosphine palladium G3 metal catalyst, and belongs to the technical field of metal complex catalysts, and the synthetic method comprises the following steps: in an argon atmosphere, carrying out stirring heating reaction on carbazole, 1, 5-cyclooctadiene palladium dichloride and sodium methanesulfonate in isopropanol; 2-dicyclohexylphosphine-2 ', 4', 6 '-triisopropyl biphenyl is added for a reaction, and after the reaction is stopped, filtering and recrystallization are performed to generate the target product organic phosphine palladium metal catalyst. According to the invention, carbazole is taken as a reaction raw material, a target product is synthesized in isopropanol by adopting a direct one-step method, the reaction temperature is lower, the reaction condition is milder, the operation is simpler and more convenient, the yield can reach more than 90%, and the method is very beneficial to actual industrial production.

The invention discloses a synthesis method of an eight-membered ring derivative, which comprises the following steps: adding 1, 5-cyclooctadiene, an organic solvent and a nickel catalyst into a reaction container, controlling the reaction temperature within the range of 35-45 DEG C, then dropwise adding an organic solvent solution of ethyl aminoacetate into the reaction system, and after dropwise adding, keeping the temperature at 35-45 DEG C for reaction; and after the reaction is finished, concentrating the reaction liquid, and purifying by column chromatography to obtain the eight-membered ring derivative. According to the invention, the nickel acetylacetonate is used as the catalyst instead of rhodium diacetate, and the cost (about 0.468 yuan / g) of the nickel acetylacetonate is far lower than that (about 3000 yuan / g) of the rhodium diacetate, so that the cost of the catalyst is greatly reduced, and the production cost is remarkably reduced.

The invention relates to the technical field of hydrogenation cyclization catalysts, and provides a preparation method of (1, 5-cyclooctadiene) dichloroplatinum (II). The preparation method comprises the following steps: dissolving potassium chloroplatinite in a first polar solvent to obtain a potassium chloroplatinite solution; and mixing the potassium chloroplatinite solution, a second polar solvent, an auxiliary agent and 1, 5-cyclooctadiene, and carrying out a coordination reaction to obtain the (1, 5-cyclooctadiene) dichloroplatinum (II). According to the invention, the polar solvent and the auxiliary agent are added in the coordination reaction, so that the coordination reaction can be promoted to be efficiently carried out under mild conditions, and the reaction efficiency and the product yield are improved. Results of the embodiment show that when the method is used for preparing the (1, 5-cyclooctadiene) dichloroplatinum (II), the reaction time is only 0.5 h, and the product yield can reach 93% or above. In addition, the method is simple in process, short in synthesis route, good in safety, cheap and easily available in raw materials and suitable for industrial production.

The application relates to the technical field of electrochemical materials, and discloses a nitrogen heterocyclic covalent organic framework material with a chemical formula of (C 42 H 18 N 12 ) n , wherein n is a positive integer greater than or equal to 4; a preparation method thereof comprises the following steps: S1: under an inert atmosphere, six nitrogen heterocyclic triphenylene-2,3,8,9,14,15-hexahalogen-substituted compounds, 2,3,6,7,10,11-hexaaminotriphenylhexa-hydrochloride, a deprotonation reagent, bis (1,5-cyclooctadiene) rhodium (I) tetrafluoroborate and 1,3-diisopropylimidazole chloride are added into an organic solvent in a molar ratio of 1:(1-1.5):(9-18):(0.02-0.12):(0.04-0.25), are uniformly mixed, are reacted at 50-150 DEG C for 1-7 days, are naturally cooled to room temperature, are filtered to collect precipitates, and a crude product is obtained; S2: the crude product in S1 is washed and dried to obtain the nitrogen heterocyclic covalent organic framework material; and the material is applied to lithium ion battery negative electrode materials and positive electrode materials. The scheme solves the problems of poor rate performance and limited application range of existing covalent organic framework materials.

A Metal-containing film forming composition comprising a precursor having the formulawherein, M=V or Nb or Ta; R1-R3=independently H or C1-C10 alkyl group; L=Substituted or unsubstituted cyclopentadienes, cyclohexadienes, cycloheptadienes, cyclooctadienes, fluorenes, indenes, fused ring systems, propene, butadiene, pentadienes, hexadienes, heptadienes; m=0 or 1.

The application discloses an indigoid exocyclic diene compound and a preparation method. N 2' / S N 2” addition, and reaction with (E)-1-benzyl-3-(2-oxo-2-phenylene)indole-2-ketone compounds, a tandem reaction of intermolecular [4+2] / elimination occurs, and an indigoid exocyclic diene structure is obtained in a good yield and high diastereoselectivity. The application has the advantages of good diastereoselectivity, good yield, greenness, high efficiency, mild reaction conditions, convenient operation, relatively short reaction time (20-24h), and less by-products.

The invention relates to a synthesis process of cyclooctene, which comprises the following steps: by taking cyclooctadiene and alkyl aldehyde as raw materials, carrying out addition reaction under the action of a catalyst and an organic amine additive to synthesize a series of perfume molecules with a cyclooctene skeleton. The perfume has native fragrance, natural fragrance, flower fragrance, green fragrance and costustoot, and can be applied to the field of high-end perfume and fragrance.

This invention provides a method for manufacturing anion exchange resin capable of producing electrolyte membranes with excellent mechanical properties (strength). In the presence of bis(1,5-cyclooctadiene)nickel (0) as a catalyst, 2,2'-bipyridine as a co-ligand, a bromide or iodide as a co-catalyst, and a reducing agent, when reacting a monomer for forming hydrophobic groups with a monomer for forming hydrophilic groups to produce anion exchange resin in which hydrophobic and hydrophilic groups are bonded via direct bonding, the molar number of bis(1,5-cyclooctadiene)nickel (0) is set to 0.3 to 1.8 times the total molar number of the monomers for forming hydrophobic and hydrophilic groups.

The invention discloses a ruthenium-based catalyst for purifying fan blade pyrolysis waste gas as well as a preparation method and application of the ruthenium-based catalyst. The method comprises the following steps: adding a solid raw material consisting of bis (2-methylallyl) (1, 5-cyclooctadiene) ruthenium (II) and 1, 1, 1-tris (diphenylphosphino methyl) ethane into a pressure-resistant pipe in the presence of inert gas, adding a solvent, sealing, and reacting in a high-temperature magnetic stirrer to obtain a catalyst crude product; after the reaction is finished, cooling to room temperature, adding a mixed solution to dissolve a crude product of the catalyst, and then refrigerating the pressure-resistant pipe to separate out crystals; and filtering and separating to obtain crystals, washing and drying in vacuum to obtain the ruthenium-based catalyst. The catalyst provided by the invention can significantly reduce the ignition temperature and complete oxidation temperature of pyrolysis waste gas, keeps stable activity in HBr gas, has halogen poisoning resistance, and is long in service life and low in production cost.

The invention discloses a cyclooctyne-derived phosphoramidite monomeric compound as shown in a formula I and a preparation method and application thereof, and belongs to the field of chemical modification of oligonucleotide and development of functional nucleic acid, the preparation method comprises the following steps: cyclopropanation is carried out on cyclooctyl-1, 5-diene and ethyl diazoacetate to obtain bicyclo [6.1. 0] non-4-ene-9-carboxylic acid ethyl ester, and the bicyclo [6.1. 0] non-4-ene-9-carboxylic acid ethyl ester is subjected to cyclopropanation to obtain the cyclooctyne-derived phosphoramidite monomeric compound as shown in the formula II; the preparation method comprises the following steps: carrying out an addition reaction with bromine and a subsequent elimination reaction to obtain bicyclo [6.1. 0] nonyl-4-alkyne-9-carboxylic acid ethyl ester, carrying out ester hydrolysis to obtain bicyclo [6.1. 0] nonyl-4-alkyne-9-carboxylic acid, carrying out a condensation reaction on the bicyclo [6.1. 0] nonyl-4-alkyne-9-carboxylic acid and 6-amino-1-hexanol to obtain N-(6-hydroxyhexyl) bicyclo [6.1. 0] nonyl-4-alkyne-9-carboxamide, and carrying out a condensation reaction on the N-(6-hydroxyhexyl) bicyclo [6.1. 0] nonyl-4-alkyne-9-carboxamide and 2-cyanoethyl-N, N-dimethylformamide to obtain the target product. And reacting with N, N-diisopropyl phosphoramidite chloride to obtain a target product. The compound is applied to oligonucleotide alkynyl modification, and a new thought and a valuable intermediate are provided for functionalization of DNA / RNA.

The invention belongs to the technical field of metal organic optical functional materials, and relates to a low-valence iridium (I) corroline complex with stable peripheral dipyrrole coordination as well as a preparation method and application thereof. The general formula of the complex is [Ir (COD) (L)], COD is 1, 5-cyclooctadiene, and L is a corroline derivative ligand. The center of Ir (I) is coordinated with a specific dipyrromethene unit on the periphery of the ligand L through a kappa 2-N, N 'coordination mode to form a stable planar tetragonal structure. The complex is FPh-Ir or Py-Ir, and the structural formula of the complex is shown in the description. The compound has strong absorption (epsilon is greater than 50,000 M <-1 > cm <-1 >) in a green light region of 500-600 nm, and shows high singlet oxygen quantum yield (phi delta is equal to 0.65-0.69) under irradiation of green light of 532 nm. The invention also discloses a preparation method of the complex and application of the complex as a high-efficiency green light photosensitizer in the fields of photodynamic therapy, antibacterial disinfection, photocatalytic oxidation and the like. The invention solves the problem of poor stability of low-valence iridium (I) complexes, and provides a novel photosensitive material with excellent performance.

A butadiene cyclization polymerization method is characterized in that the method uses 1,3-butadiene as a raw material, and a cyclization polymerization reaction occurs at 30-90 DEG C in the presence of a heterogeneous catalyst composed of an EMM-23 molecular sieve subjected to silanization treatment and titanium supported thereon, and an alkyl aluminum chloride as a cocatalyst, so that 1,5,9-cyclododecatriene, 1,5-cyclooctadiene and 4-vinyl cyclohexene with high selectivity are obtained.

The invention discloses a dianthracene ortho-position selective boron esterification and group post-modification method, which realizes the ortho-position efficient boron esterification of dianthracene by taking a methoxy (cyclooctadiene) iridium dimer as a catalyst through the synergistic effect of a steric hindrance effect and a specific solvent system. A novel method which is high in regioselectivity, mild, efficient and suitable for ortho-position precise modification is provided; group post-modification is further carried out around the boron esterification intermediate, and functional groups with different push-pull electron effects, such as trifluoromethylphenyl, triisopropylsilylacetylene, 4-methoxyphenyl, pyridyl, halogen, cyano and thienyl, are introduced in a targeted design, so that a dianthracene core plane conjugated structure is reserved, and meanwhile, the functional groups with different push-pull electron effects, such as dianthracene, dianthracene and dianthracene are synthesized. The stability and the solution machinability of the material are remarkably improved, the photophysical function of the material is expanded, and a core foundation is laid for application of the dianthracene material in the fields of near-infrared photoelectricity, organic semiconductors and the like.

The invention relates to the technical field of chemical synthesis, in particular to a preparation method of high-temperature-resistant alpha-methylstyrene monomer resin, which comprises the following steps: drying styrene, 1, 5-cyclooctadiene, alpha-methylstyrene and vinyltoluene to obtain a mixture, adding a solvent, adding a catalyst for reaction to obtain a polymerization product, adding a catalyst for reaction to obtain the high-temperature-resistant alpha-methylstyrene monomer resin. And carrying out alkali washing, decoloration and gas stripping on the reaction product to obtain a final product. The invention provides the preparation method of the high-temperature-resistant alpha-methylstyrene monomer resin, the method is simple to operate, and the prepared monomer resin has excellent degradation resistance, can be widely applied to the fields of plastics, tires, plastics and the like, and has a good application prospect.

The application belongs to the field of organic synthesis, and particularly relates to a synthesis method of chiral alpha-aryl thioester. The synthesis method comprises the following steps: in the presence of a transition metal catalyst (bis-(1,5-cyclooctadiene) nickel), a nitrogen ligand ((4R, 4'R)-4-((R)-sec-butyl)-4'-((S)-sec-butyl ester)-1,1'-bis(3-(tert-butyl)phenyl)-4,4',5,5'-tetrahydro-1H,1'H-2,2'-biimidazole) and a photocatalyst (2,4,5,6-tetrakis(9-carbazolyl)-isophthalonitrile), a base (triethylamine) and a reducing agent, a chiral alpha-aryl thioester is synthesized by a reductive cross-coupling reaction in combination with an organic solvent (tetrahydrofuran). The application uses cheap nickel metal as a catalyst, constructs a cross-coupling reaction of a C-C bond, and has the advantages of mild reaction conditions, high selectivity and the like.

The invention provides a photocuring composition, a packaging structure and a display device. The photocurable composition provided by the invention comprises a photocurable negative thermal expansion coefficient monomer, a photocurable diluting monomer and an initiator, the photocurable monomer with the negative thermal expansion coefficient is a compound based on dibenzocyclooctadiene. The photocuring composition provided by the invention adopts the dibenzocyclooctadiene-based compound as the photocurable negative thermal expansion coefficient monomer, and through the synergistic effect with the photocurable diluting monomer and the initiator, the photocuring composition has the advantages of high heat resistance, low expansion coefficient, high light transmittance and the like; the high-performance requirement of thin film packaging can be met, the raw materials of the photocuring composition are low in price and easy to obtain, and the photocuring composition has good market application prospects.

A method for preparing 3,3',4,4'-tetrachlorobiphenyl-d6, comprising: step 1, mixing deuterated o-dichlorobenzene, methoxy(cyclooctadiene)iridium dimer, 4,4'-di-tert-butyl-2,2'-dipyridine, and bis(pinacolato)diboron to prepare 3,4-dichlorophenylboronic acid pinacol ester-d3; step 2, mixing the 3,4-dichlorophenylboronic acid pinacol ester-d3, cuprous iodide, 1,10-phenanthroline, and potassium iodide to prepare 3,4-dichloroiodobenzene-d3; and step 3, mixing the 3,4-dichloroiodobenzene-d3, a palladium catalyst, an alkaline solution, and the 3,4-dichlorophenylboronic acid pinacol ester-d3 to prepare the 3,3',4,4'-tetrachlorobiphenyl-d6.

The invention relates to a block copolymer as well as a preparation method and application thereof. The preparation raw materials of the block copolymer comprise a cycloolefin monomer and a polymer of which the main chain contains double bonds, wherein the polymer of which the main chain contains double bonds is selected from at least one of polybutadiene, polyisoprene, butadiene styrene rubber, polycyclopentene, polycyclooctene and polycyclooctadiene. The block copolymer can be used as a compatibilizer for polyethylene and polypropylene kneaded products. Physical entanglement or'emulsification 'is generated at an interface through chain segments, similar to polyethylene and polypropylene, in molecules of the block copolymer, so that interphase bonding is enhanced, the structural stability of a blend is improved, two phases can better bear external stress together, and therefore, the mechanical properties (such as strength and toughness) and processability of the blend material are improved.

The application belongs to the technical field of organic chemical industry, and particularly relates to an olefin carbonyl synthesis method, which comprises the following steps: dissolving a rhodium catalyst, an organic phosphine ligand, an olefin and a formaldehyde solution in a solvent to construct a homogeneous catalytic system, and preparing an aldehyde product under certain reaction conditions; wherein the rhodium catalyst comprises acetylacetone dicarbonyl rhodium and cyclooctadiene chlororhodium dimer, and the ligand comprises a bisphosphite ligand or a combination of the bisphosphite ligand and a monodentate / bidentate phosphine ligand. The application solves the problems of storage and transportation danger, high energy consumption and high-pressure reaction caused by the use of synthesis gas in the existing olefin hydroformylation, and achieves the technical effects of mild reaction conditions, wide reaction substrate range and suitability for various low and high carbon olefins.

The application provides a synthesis method of cyclooctatetraene. The cyclooctatetraene is prepared from 1,5-cyclooctadiene through a lithiation reaction and an oxidation reaction. The raw material is easy to obtain and low in cost. The low-toxicity transition metal salt is used as an oxidant, the reaction yield is high, the process condition is easy to achieve and control, the safety and reliability of production are improved, the equipment and synthesis cost are reduced, the green preparation is realized, and the application in industrial production is facilitated.

The invention belongs to the technical field of organic photoelectric materials, and particularly discloses an organic small molecule donor material and a preparation method and application thereof. The organic small molecule donor material provided by the invention has a structural formula I as shown in a formula I. A core structure, namely a cyclooctadiene skeleton, can realize coordinated regulation and control of phase separation morphology and a photophysical process of a blended membrane; the constructed star-shaped multi-arm structure not only inhibits the excessive crystallization of a donor, but also enhances the interfacial interaction, optimizes the charge transfer path and expands the pi conjugate length of molecules, thereby enhancing the electron transport performance and reducing the non-radiation voltage loss. Experiments prove that the donor material shows remarkable effectiveness in a system of a donor PM6 and an acceptor L8-BO, and relatively high power conversion efficiency which can reach 18.78% is realized. The organic small molecule donor material provided by the invention can effectively reduce trap density and optimize a charge transfer path, and further improves the overall performance of an organic solar cell.

This application relates to a method for preparing carbamate compounds from dioxazolone derivatives, comprising the following steps: reacting a dioxazolone derivative with a hydroxyl-containing compound in the presence of a catalyst to prepare the carbamate compound. The catalyst includes one or more of dichlorobis(4-methylisopropylphenyl)ruthenium(II), tri(acetylacetonate)ruthenium(III), cyclooctadiene ruthenium(II) chloride, and dichloro(pentamethylcyclopentadienyl)iridium(III) dimers. This synthetic method is universally applicable to the synthesis of carbamate compounds with different group types (such as alkyl, aryl, heteroaryl, etc.), and exhibits high yields and mild reaction conditions.