163 results about "Cyclopentene" patented technology

A technology for preparing glutaraldehyde through cyclopentene oxidation belongs to the technical field of organic synthesis, glutaraldehyde is prepared through cyclopentene oxidation by adopting a photocatalysis-electrocatalysis synergistic catalyst g-C3N4 / TiO2 (at) Au-Co / N-G. The catalyst is of a unique core-shell structure, is stable in property, promotes an oxygen reduction reaction in a catalysis technology, and has good catalytic activity. The conversion rate of cyclopentene and the selectivity of glutaraldehyde are remarkably improved, and the effect is remarkable.

The present invention relates to a tobacco flavor base module, flavor and heated cigarette that improve the consistency of puff by puff, and belongs to the field of tobacco flavors and fragrances. The tobacco flavor base module is composed of the following components: 3,4-dimethyl-1,2-cyclopentanedione slow-release flavor, 3,5-dimethyl-1,2-cyclopentanedione slow-release flavor, methylcyclopentenolone slow-release flavor, ethylcyclopentenolone slow-release flavor, furfural slow-release flavor, 5-methylfurfural slow-release flavor, furfuryl alcohol slow-release flavor, 2-methyltetrahydrofuran-3-one slow-release flavor, 4-hydroxy-2,5-dimethyl-3(2H)furanone slow-release flavor, 3-pentene-2-one slow-release flavor, ethyl maltol slow-release flavor, maltol slow-release flavor, 5-methyl-2-furanmethanol slow-release flavor. The present invention prepares the slow-release flavor by making each component into a slow-release flavor and then mixes it as a tobacco flavor base module, which not only improves the consistency of puff by puff during puffing, but also significantly improves the burnt sweet fragrance characteristics of heated cigarettes.

The invention belongs to the technical field of novel material catalysis, and particularly relates to a hollow mesoporous silica supported phosphotungstic acid catalyst and a preparation method and application thereof. According to the invention, the advantages of high specific surface area and regional effect performance of hollow mesoporous silica and the characteristic of adjustable acidity of vacancy heteropolyacid quaternary ammonium salt are innovatively combined, and the cationic surfactant is loaded on the surface of the hollow mesoporous silica, so that the contact surface of raw materials is effectively increased, efficient conversion of reactants is assisted, and the reaction efficiency is improved. The supported catalyst with efficient catalysis and stable performance is obtained. The catalyst can be used for a reaction for preparing glutaraldehyde through heterogeneous catalysis of cyclopentene oxidation, and the reaction condition is mild. Experiments show that under the catalytic system, the cyclopentene conversion rate can reach 90% or above, the glutaraldehyde selectivity is improved to 75% or above, double improvement of the cyclopentene conversion rate and the glutaraldehyde selectivity is successfully achieved, meanwhile, the advantage that the catalyst is easy to separate is achieved, and an efficient solution is provided for industrial application of synthesis of glutaraldehyde through cyclopentene oxidation.

The invention discloses a preparation method and application of a catalyst with a high-valence tungsten coordination structure, and the preparation method of the catalyst comprises the following steps: enabling tungstic acid and hydrogen peroxide with specific concentration and proportion to react at a certain temperature to prepare a peroxy tungstic acid solution; dissolving a polydentate organic ligand capable of forming a stable chelation structure with a tungsten center in an organic solvent, mixing the obtained ligand solution with a peroxytungstic acid solution according to a specific ratio, and carrying out a coordination reaction at a certain temperature until the ligand is completely reacted; and finally, carrying out solid-liquid separation, washing and drying to obtain the high-valence tungsten coordination structure catalyst. The catalyst can be used for a reaction for synthesizing glutaraldehyde through cyclopentene oxidation, under the mild condition, hydrogen peroxide serves as a green oxidizing agent, the conversion rate of cyclopentene reaches 90% or above, the selectivity of glutaraldehyde exceeds 60%, the catalyst is stable in structure and can be recycled for 10 times or above, and the problems that in the prior art, a catalyst is difficult to separate, low in activity, poor in stability and the like are solved; the method has a remarkable industrial application value.

The invention provides a 7-acylhydrazone-cyclopentene pyridine compound, a preparation method and application thereof, a pharmaceutical composition and application thereof, and relates to the technical field of medicines. According to the invention, an acylhydrazone group with pesticide activity is connected to the 7th site of cyclopentene pyridine to obtain the cyclopentene pyridine compound containing an acylhydrazone active fragment. The 7-acylhydrazone-cyclopentene pyridine compound provided by the invention contains a special Schiff base structure of a-CONHN = C-substructure, and an acylhydrazone group contains oxygen atoms and nitrogen atoms at the same time, can participate in formation of hydrogen bonds in organisms, has certain flexibility, is firmer in combination with receptors, has wide biological activity, and can be used for preparing a novel compound for preparing the 7-acylhydrazone-cyclopentene pyridine compound. And the compound has good application prospects in preparation of insecticides, bactericides, herbicides, anti-HIV drugs, anti-virus drugs or anti-cancer drugs, especially in plant protection, for example, the compound has good application prospects in preparation of insecticides, bactericides, herbicides, anti-virus drugs, anti-HIV drugs or anti-cancer drugs.

Mixtures configured to etch a thin film of an integrated circuit material are disclosed. The mixtures may include a first compound comprising one or more of: A, B, and C; and a second compound comprising one or more of: oxygen, argon, helium, nitrogen, octafluorocyclobutane (C4F8), hexafluorobutadiene (C4F6), carbonyl fluoride (COF2), difluoromethane (CH2F2), trifluoromethane (CHF3), carbon tetrafluoride (CF4), methyl fluoride (CH3F), octafluorocyclopentene (C5F8), 2,3,3,3-tetrafluoropro-l-ene (C3H2F4), 2,3,3,3-tetrafluoropro-l-ene (C3H2F4), hexafluoropropene (C3F6), hexafluorocyclopropane (C3F6), or 1,1,3,3,3-pentafhioropropene (C3HF5).

This invention provides a novel phosphine oxide compound that inhibits SHP2, a composition thereof, a method for preparing the compound, and a method for treating SHP2-related diseases (such as cancer).

A slow-reaction recyclable epoxy resin system for structural composites and a process of recycling the composites made therefrom are disclosed. The system includes an epoxy resin component including: a high purity epoxy resin selected from a high purity bisphenol A epoxy resin, a high purity bisphenol F epoxy resin, and combinations thereof, where the high purity epoxy resin is in a range of from 20 wt% to 95 wt% of the total weight of the cyclopentene resin component; a standard epoxy resin selected from a standard bisphenol A epoxy resin, a standard bisphenol F epoxy resin, and combinations thereof, where the standard epoxy resin is in the range of from 1 wt% to 50 wt% of the total weight of the epoxy resin component; and a curing agent component including a curing agent having at least one cleavage bond selected from a group including an acetal bond, a ketal bond, a formal bond, an orthoester bond, or a siloxy bond. The pot life of the slow-reaction recyclable epoxy resin system is greater than 540 minutes at 25 DEG C.

The application belongs to the technical field of fine chemical industry, and discloses a method for synthesizing cyclopentanol, which comprises the following steps: (1) taking cyclopentene and water as raw materials, adding a solubilizer, and mixing to obtain a reaction liquid; (2) continuously hydrating the reaction liquid in a fixed bed reactor filled with a cation exchange resin to obtain a reaction product; and (3) distilling and separating the reaction product to obtain cyclopentanol. The synthesis method has the advantages of simple process flow, environmental protection, low energy consumption, excellent product indexes, and long operation cycle of the catalyst. Polyethylene glycol-400 or polypropylene glycol-400 is used as a single solubilizer, and a specific macroporous strong acid cation exchange resin catalyst is used to realize the efficient and high-selectivity hydration reaction of cyclopentene.

The invention provides a production method of high-purity cyclopentene, and belongs to the technical field of olefin production. According to the method, a crude cyclopentene raw material rich in cyclopentene, cyclopentane and 1, 2-pentadiene is mixed with hydrogen, the mixture is introduced into an adiabatic bubbling bed reactor for a selective hydrogenation reaction, and a catalyst is modified Pd / Al2O3. After hydrogenation reaction liquid is subjected to light component removal and refining, a high-purity cyclopentene product with the content of 99.9% or above and the content of 1, 2-pentadiene being 10 ppm or below is obtained, and the monomer requirement for producing cyclopentene rubber is met.

The application provides a 5-aryl-cyclopentenopyridine compound and a preparation method and application thereof and a plant protection agent, and relates to the technical field of plant protection. The 5-aryl-cyclopentenopyridine compound provided by the application introduces an aromatic group Ar, which can not only increase the stability of the compound molecule, but also interact with amino acids in a receptor protein, thereby improving the biological activity of the compound. The 5-aryl-cyclopentenopyridine compound provided by the application has good antiviral, antibacterial and insecticidal effects, and has a good application prospect in plant protection.

The invention provides a compound type sweet and fragrant flavor composition and an application thereof, and the compound type sweet and fragrant flavor composition comprises maltol, ethyl maltol, methyl cyclopentenolone, ethyl cyclopentenolone, 3, 4-dimethyl-1, 2-cyclopentanedione, 4-hydroxy-2, 5-dimethyl-3 (2H) furanone and 3, 5-dimethyl-1, 2-cyclopentanedione, and the compound type sweet and fragrant flavor composition comprises maltol, ethyl maltol, methyl cyclopentenolone, ethyl cyclopentenolone, 3, 4-dimethyl-1, 2-cyclopentanedione, 4-hydroxy-2, 5-dimethyl-3 (2H) furanone and 3, 5-dimethyl-1, 2-cyclopentanedione. The composition disclosed by the invention has obvious sweet aroma style characteristics and aroma intensity, can effectively increase the sweet aroma flavor and sensory style characteristics of cigarettes, makes up for the defects of light cigarette aroma, insufficient smoke concentration and the like of low-coke cigarettes, can restore the natural feeling of the cigarette aroma, ensures good harmony, and has good application prospects. The method has a wide application prospect in the field of tobacco flavor blending, especially in the aspect of low-coke cigarette flavor enhancement compensation.

The invention provides a method for preparing 4-cyclopentene-1, 3-diketone through a one-pot method, and relates to the technical field of organic synthesis. According to the method for preparing the 4-cyclopentene-1, 3-diketone, provided by the invention, the 4-cyclopentene-1, 3-diketone is obtained by sequentially carrying out dehydration reaction and oxidation reaction on the hexanose in the water, the reaction can be carried out in the same reaction kettle, the production efficiency is high, the method is green and environment-friendly, and the cost is low.

The invention belongs to the technical field of preparation methods of fine compounds, and particularly relates to a preparation method of 3-(3-isopropyl phenyl) butyraldehyde. The method comprises the following steps: by taking a mixed material of m-isopropenyl cumene and phenylcyclopentene as a raw material, carrying out carbonylation reaction under the action of a catalyst; the catalyst is a noble metal carbonyl catalyst; after the reaction is finished, a reaction product is rectified, and isopropenyl isopropyl benzene is obtained; and carrying out formylation reaction on the product, and separating to obtain the 3-(3-isopropyl phenyl) butyraldehyde. The method has the advantages that raw material sources are simplified, physical and chemical properties of products obtained after different components react are changed through different reaction conditions of the different components in the reaction process, the purposes of separation, removal and purification are easily achieved, then the target product is obtained through the hydroformylation reaction, high purity is kept, and the method is suitable for industrial production. And moreover, the conversion rate is more thorough, and the cost can be greatly reduced compared with the existing production technology economically.

The invention relates to the technical field of catalyst synthesis, in particular to a catalyst for synthesizing glutaraldehyde from cyclopentene and a synthesis method thereof.The catalyst for synthesizing glutaraldehyde from cyclopentene comprises a molecular sieve and an active center loaded on the molecular sieve, and is characterized in that the molecular sieve is an HMS molecular sieve, the specific surface area is 500-700 m < 2 > / g, the average pore size is 2-10 nm, and the molecular sieve is an HMS molecular sieve. The active center is WO3, and the molar ratio of Si in the molecular sieve to W in the active center is (20-30): 1. The catalyst prepared by the preparation method of the catalyst for synthesizing glutaraldehyde from cyclopentene can load more catalytic active centers, the loading capacity is higher than that of the existing catalyst with the Si / W molar ratio of about 35: 1, but the catalyst is dispersed more uniformly and is not easy to agglomerate, so that higher conversion rate and selectivity are obtained.

This invention relates to cyanoacrylate-containing compositions that include, in addition to the cyanoacrylate component, a benzodioxol free radical stabilizer. The inventive cyanoacrylate compositions demonstrate improved shelf life stability while maintaining the level of adhesive performance.

The invention discloses cross-linked fluororesin, a preparation method and application, and belongs to the technical field of fluorine-containing polymers. The cross-linked fluororesin is composed of a fluorine-containing copolymer A and a cross-linking agent B. The tensile strength of the cross-linked fluororesin is larger than or equal to 30 MPa, the elongation at break is larger than or equal to 150%, and the transparency is larger than or equal to 85% when the thickness is 0.1 mm. The fluorine-containing copolymer A is a copolymer formed by copolymerization of perfluoro-2, 2-dimethyl-1, 3-dioxole PDD, hexafluoropropylene and perfluoroalkyl vinyl ether containing two double bonds, and the fluorine-containing copolymer A is a copolymer formed by copolymerization of perfluoro-2, 2-dimethyl-1, 3-dioxole PDD, hexafluoropropylene and perfluoroalkyl vinyl ether containing two double bonds. The cross-linked fluororesin prepared by the invention has the advantages of high strength, high toughness, high transparency and the like, and the performance boundary and the application field of the fluororesin are expanded.

The present application includes an enantiomerically pure compound of Formula (R)-I or a salt and / or solvate thereof (R)-I. Also included are compositions of the enantiomerically pure compound of Formula (R)-I as well as methods of using the compound of Formula (R)-I or composition thereof for treating, for example, disease, disorder or condition that benefits from psychotherapy. The present application also includes a composition comprising a non-racemic mixture a compound of Formula (R)-I, or a salt and / or solvate thereof, and (S)-I, or a salt and / or solvate thereof: wherein (R)-I, or a salt and / or solvate thereof, is present in the composition in a greater amount by enantiomeric equivalents, relative to (S)-I, or a salt and / or solvate thereof and uses thereof. Further included are process preparing a compound of Formula (R)-I or (S)-I.

The invention discloses a resin catalyst for synthesizing CPME and a preparation method and application thereof, and belongs to the technical field of fine chemical catalysis, and the preparation method comprises the following steps: by taking styrene, divinyl benzene and 4-vinyl cyclohexene as monomers, carrying out suspension copolymerization in the presence of a pore-foaming agent, a dispersing agent, an initiator and a water-phase polymerization inhibitor to prepare a copolymer white ball, and then carrying out extraction, washing and drying to obtain the resin catalyst for synthesizing CPME. And drying, screening, sulfonating with sulfur trioxide, and washing to obtain the product. According to the invention, a third monomer 4-vinyl cyclohexene is introduced into a traditional styrene-divinyl benzene copolymerization system, and the rigid cyclic structure can significantly enhance the thermal stability of a resin skeleton; the perfluorinated chain segments in the dispersant can be directionally arranged to the surfaces of resin particles in the polymerization process to form a hydrophobic protection layer, so that the stability of a catalyst and the selectivity of cyclopentene at a relatively high temperature can be remarkably improved.

The invention discloses a preparation method of 1-amino-2-cyano-1-cyclopentene, which comprises the following steps: 1, preparing a mixed solution, namely mixing a first organic solvent with super alkali in a protective gas atmosphere, heating by adopting a nano infrared energy-saving electric heating coil, stirring, uniformly mixing and dissolving to obtain the mixed solution; the super base is selected from one of potassium tert-butoxide, sodium tert-butoxide, sodium ethoxide, sodium methoxide and sodium hydroxide; 2, cyclization reaction: dropwise adding adiponitrile into the mixed solution, and continuously carrying out infrared heat preservation reaction for 3-8 hours to obtain a reaction solution of 1-amino-2-cyano-1-cyclopentene; 3, cooling crystallization and filtration: cooling the reaction liquid to-10-5 DEG C, standing for crystallization, and carrying out pressure filtration in a protective gas atmosphere to obtain an ACCP crude product and a filtrate; and 4, recrystallizing and refining to obtain a pure product. The method is mild in reaction condition, low in energy consumption, good in product yield and high in product purity, solves the problems of high solvent toxicity, low yield and high environmental protection pressure in the prior art, and is suitable for production of medicine and pesticide intermediates.

The invention relates to the technical field of fine chemical engineering, in particular to a method for preparing cyclopentanol based on one-step synthesis of cyclopentene, which comprises the following steps: step 1) preparation of a modified strongly acidic cation exchange resin catalyst; (2) synthesizing by a one-step method; step 3) separation; and 4) purifying. In the step (2), under the inert atmosphere, the modified strong-acid cation exchange resin catalyst, cyclopentene, n-amyl alcohol and water are mixed and react; wherein the molar ratio of the cyclopentene to the water is (3-5): 1, the addition amount of the n-amyl alcohol is 1.0-2.0 times of the mass of the cyclopentene, and the n-amyl alcohol and the water form a cosolvent system. The method has the advantages that the process route is clean, efficient and pollution-free, the conversion per pass is high, the product is easy to separate, the low-temperature physical property of the product is good, the solvent and reactants in the whole reaction process can be repeatedly used, efficient and environment-friendly hydration preparation of cyclopentanol from cyclopentene can be realized, and the method has a good industrial application prospect.

The invention discloses a preparation method of high-purity cyclopentene, and belongs to the technical field of organic synthesis. The method comprises the following steps: firstly, depolymerizing dicyclopentadiene into cyclopentadiene; mixing the obtained gaseous cyclopentadiene with hydrogen according to a ratio, sequentially passing through a first-stage fixed bed reactor and a second-stage fixed bed reactor which are connected in series, and carrying out selective hydrogenation reaction under the action of a supported palladium catalyst to generate crude cyclopentene; and finally, carrying out dimerization reaction on the crude cyclopentene in an inert atmosphere to remove residual cyclopentadiene, carrying out normal-pressure distillation purification, and collecting fractions at 43-47 DEG C to obtain high-purity cyclopentene. The two-stage fixed bed continuous hydrogenation process is adopted, the operation is simple, the reaction condition is mild, the cyclopentadiene conversion rate is high, the cyclopentene selectivity is good, the product purity can reach 99.6% or above, and the method is suitable for industrial continuous production.

The application discloses a 2-aryl-3-trifluoroethyl indole compound with a structure as shown in formula A and a preparation method and application thereof. 3 The target object A is obtained through the reaction of the aromatic aldehyde, the azacyclic carbene (NHC) and the o-amino styrene, 3,3-dimethyl-1-(trifluoromethyl)-1,3-dihydro-1 lambda The 2-aryl-3-trifluoroethyl indole compound disclosed by the application has excellent antibacterial activity, is a novel material with a novel structure, raw materials are easy to obtain, reaction conditions are mild, green and environment-friendly, and operation is simple.

This invention relates to the field of building materials technology, and particularly to a viscosity-reducing polycarboxylate superplasticizer and its preparation method. The viscosity-reducing polycarboxylate superplasticizer uses polyethylene glycol dicyclopentenyl ether methacrylate as the macromonomer, combined with 2-methacryloyloxyethyl phosphocholine, 4-vinylphenylboronic acid, and polyethylene glycol phenyl ether methacrylate as small monomers, prepared via free radical polymerization. Finally, it undergoes freeze-drying and grinding to obtain the target powder product. When the prepared superplasticizer is added to concrete mixtures, it swells and unfolds into a comb-shaped polymer under mechanical stirring and alkaline conditions. Through PEG long side-chain lubrication and steric hindrance, the regulation of surface tension / interfacial energy by phosphocholine groups, and the selective adsorption of borate groups, the initial viscosity is significantly reduced, the viscosity increase over time is controlled, and segregation and bleeding are effectively suppressed, making it suitable for various cementitious systems.

The invention belongs to the technical field of chemical engineering, and particularly relates to an energy-saving method and device for byproduct cyclohexane. Comprising the following steps: a, an extractive distillation process: performing primary extractive distillation on a material containing methyl cyclopentene, cyclohexane, cyclohexene and benzene to obtain an alkene solution at the top of the tower and an alkene solution at the bottom of the tower; performing secondary extractive distillation on the obtained alkane-alkene solution to obtain a crude cyclohexane solution at the tower top and an alkene solution at the tower bottom; performing tertiary extractive distillation on the obtained benzene-alkene solution to obtain a cyclohexene product at the tower top and a benzene solution containing benzene and a solvent at the tower bottom; b, a hydrofining process: carrying out hydrogenation reaction on the crude cyclohexane solution; and c, a rectification separation process: carrying out rectification on the hydrogenated cyclohexane solution in a low-pressure tower. According to the method, cyclohexane as a byproduct in the process of separating cyclohexene through three times of extractive distillation needs to consume a large amount of heat for refining, and the heat is recovered and used for extractive distillation, so that the energy consumption of the whole process can be reduced.

The application discloses a maleimide-based self-initiating two-photon photoresist and a patterning method thereof. The maleimide-based self-initiating two-photon photoresist contains 100 parts of a maleimide compound, 10-30 parts of a polycyclopentenyl acrylate and 20-50 parts of a high-refractive fluorene-based active crosslinking agent. The maleimide-based self-initiating two-photon photoresist avoids the use of conventional two-photon initiators, thereby avoiding the migration and penetration of the residual photo-initiator and photolysis fragments in the common photoresist and the possibility of further photochemical reactions; the oxygen-blocking effect of the polycyclopentenyl acrylate can ensure the normal use of the photoresist in air; and the high-refractive fluorene-based active crosslinking agent can effectively adjust the refractive index of the photoresist to improve the writing effect. After the photoresist is written by a femtosecond laser and developed, two-dimensional lines with a feature size of hundreds of nanometers can be obtained, and three-dimensional structures with a size of hundreds of micrometers can also be written.

An object of the present application is to provide an industrially useful and novel method for producing a 1,3-benzodioxole derivative with a high yield and few impurities, including a novel benzene ring chlorination reaction. In the novel method for producing a 1,3-benzodioxole derivative, it has been found that an industrially useful and novel benzene ring chlorination reaction is performed with a high yield and few impurities by using sulfuryl chloride. Based on this finding, the present application has been completed.