12 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.

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 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 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.

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 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.

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.