45 results about "Heptene" patented technology

The invention discloses a composition for repelling aphids and preventing potato Y virus infection and a virus and insect inhibitor, and belongs to the technical field of plant disease prevention and control. The pharmaceutical composition provided by the invention is prepared from at least two of 1-pentene-3-ketone, 2-ethyl furan and cis-4-heptenal, and the pharmaceutical composition is prepared from at least two of 1-pentene-3-ketone, 2-ethyl furan and cis-4-heptenal. The pharmaceutical composition not only can avoid aphids and reduce the probability that crops are infected by potato Y viruses, but also can realize the synergistic interaction among the drugs and avoid or reduce the drug resistance of the aphids to the drugs, so that the pharmaceutical composition has important practical value and application prospect in the technical field of plant disease control.

The invention relates to a preparation method of a catalyst for preparing 1-hexyl methyl acetate by addition of n-heptene and acetic acid, which comprises the following steps: impregnating a carrier sulfonic acid group strong acid resin into a heteropoly acid solution, stirring at 20-50 DEG C for 8-24 hours, and controlling the mass ratio of the sulfonic acid group strong acid resin to the heteropoly acid solution to be (10: 1)-(1: 3); and after stirring, filtering, and drying a solid obtained after filtering at 80-140 DEG C to obtain a finished product. The invention also provides a synthetic method for synthesizing 1-hexyl methyl acetate by using the catalyst. The supported solid acid catalyst can be recycled from reaction slurry through simple liquid-solid separation means such as filtration and centrifugation, and good product selectivity can be obtained.

This invention discloses a lemongrass fermentation broth, its preparation method, and its application. The lemongrass fermentation broth simultaneously meets the following conditions: it contains live Lactiplantibacillus microorganisms, and the total number of live bacteria is ≥1×10⁻⁶. 9 The fermented lemongrass broth contains cfu / mL and contains volatile active ingredients, including at least linalool and methyl heptenone. Compared with unfermented lemongrass raw materials, the content of methyl heptenone in the lemongrass fermentation broth has increased from undetectable to over 10%, and the relative content of linalool has increased to over 20%. This invention's lemongrass fermentation broth possesses both a high viable bacterial count and a specific spectrum of volatile active ingredients. Through microbial fermentation, it achieves the targeted transformation of volatile components in lemongrass raw materials, particularly significantly increasing the content of linalool, methyl heptenone, and various ester aroma components, thus possessing broad prospects for industrial application.

The application discloses a polyolefin resin composition and a preparation method and application thereof, and the polyolefin resin composition comprises the following components in parts by weight: linear PE resin 60-92 parts; HDPE 2-10 parts; and cyclic polyolefin resin 6-30 parts; the content of bicycloheptene in the cyclic polyolefin resin is greater than or equal to 75%, and the heat distortion temperature is greater than or equal to 127 DEG C. The polyolefin resin composition has good extinction effect and is suitable for packaging materials with high extinction effect requirements.

This invention discloses a thermal insulation and soundproof building decorative panel, characterized in that it is made from the following raw materials in parts by weight: 30-40 parts of N-(4-cyano-3-trifluoromethylphenyl)methacrylamide / N-tris(hydroxymethyl)methacrylamide / 5-vinylbicyclo[2.2.1]hept-2-ene copolymer, 8-12 parts of hollow SiO2 nanofibers, 3-5 parts of foamed alumina, 5-8 parts of terminal thiol hyperbranched polysulfide, 20-25 parts of inorganic filler, 1-3 parts of coupling agent, 0.8-1.2 parts of peroxide initiator, and 0.3-0.5 parts of foaming agent. This invention also discloses a method for preparing the aforementioned thermal insulation and soundproof building decorative panel. The thermal insulation and soundproof building decorative panel disclosed in this invention has significant thermal insulation effect, excellent comprehensive performance and performance stability, good fire resistance, and low preparation cost.

The invention relates to the technical field of attractants and pest control, in particular to a volatile matter luring ball for luring hoverflies, which comprises a PVC (polyvinyl chloride) shell, a non-woven fabric liner and a slow-release attractant, the slow-release attractant is composed of a composite attractant, a paraffin oil solvent and a macroporous resin slow-release part in proportion. The compound attractant is prepared by mixing trans-beta-farnesene, nerolidol, 6-methyl-5-heptene-2-ketone and cis-3-hexene acetate according to a specific volume ratio, and the compound attractant can be used for attractant attractants. The preparation method comprises the following steps: oscillating and mixing the components with a solvent under a low-temperature condition, adsorbing on macroporous resin, and packaging. Through the synergistic effect of the multi-component volatile matters and the multi-stage slow-release structure, the luring ball realizes efficient, specific and lasting behavior luring on hoverflies, effectively prolongs the field lasting period, and improves the stability and practicability of natural enemy insect regulation and control.

The invention discloses an enzymatic synthesis method of a melogabalin intermediate and related alcohol dehydrogenase, racemic 3-ethyl bicyclo [3.2. 0] hept-3-ene-6-ketone is used as a substrate, a genetically engineered bacterium for producing alcohol dehydrogenase is used as an enzyme catalyst, a genetically engineered bacterium for producing formate dehydrogenase, ammonium formate and coenzyme are matched, an enzymatic reaction is carried out under a stirring condition, and the melogabalin intermediate is obtained. And carrying out purification and separation on a reaction product to obtain the melogabalin intermediate (1R, 5S)-3-ethyl bicyclo [3.2. 0] hept-3-ene-6-ketone. The method has the advantages of simple reaction, few steps, mild reaction, less pollution and the like, and has great industrial application potential and commercial value.

The present application relates to bicyclo[2.2.1]heptane and bicyclo[2.2.1]heptene derivatives, methods of making them, and methods of using them as flavor and fragrance ingredients in food, cosmetic, pharmaceutical, consumer, and other compositions and products.

An object of the present invention is to provide a technique capable of reducing naringin-derived bitterness in a naringin-containing beverage and improving its good aftertaste.SOLUTION: The present invention provides a beverage comprising naringin and nerol and / or 6-methyl-5-hepten-2-one, wherein the content of nerol is 10 to 1000ppb, and the content of 6-methyl-5-hepten-2-one is 10 to 1000ppb.SELECTED DRAWING: None

The utility model relates to the technical field of separation and purification devices, and discloses a separation and purification device for methyl heptenone, which comprises a preheating tank, a water inlet pipe and a water outlet pipe, and the motor is arranged at the bottom of the preheating tank, a rotor of the motor is coaxially provided with a rotating rod, the rotating rod is located in the preheating tank, cleaning frames are evenly distributed on the surface of the rotating rod, and cleaning plates are installed on the surfaces of the cleaning frames. Clean water can be injected into the preheating tank through a water inlet pipe, and a motor is started to drive a rotating rod to rotate, so that a cleaning frame can be driven to rotate to scatter the clean water, and a water body is driven to flow along the interior of the preheating tank, so that residual raw materials in the preheating tank can be scoured; and raw materials adsorbed on the inner wall of the preheating tank can be scraped off through the cleaning plate, the situation that residues are coked or crystallized on the pipe wall to reduce the heat transfer area is avoided, and therefore the preheating efficiency of the preheating tank can be improved.

The application discloses a Pediococcus pentosaceus strain derived from high-temperature Daqu and application thereof, the strain is named Pediococcus pentosaceus zqw75, and the preservation number is CGMCC NO.25146.The strain can produce aroma substances such as lauryl acetate, n-heptanol, butyl dodecalactone, benzene acetaldehyde, methyl heptenone and pyrazine, and when the strain is used in combination with commercial sweet wine starter, the relative content of phenylethanol is increased from 8.562% to 10.455%, the relative content of ethyl butyrate is increased from 0.460% to 1.473%, the relative content of ethyl octanoate is increased from 0.754% to 1.672%, the relative content of ethyl n-hexanoate is increased from 0.832% to 3.446%, and the relative content of isoamyl acetate is increased from 0.832% to 2.155%; and the strain can produce aroma substances that are not produced by the commercial sweet wine starter, such as hexanoic acid, butyric acid, octanoic acid, ethyl hexanoate and lauryl acetate.The strain can be applied in the field of liquor making, including pit mud making and liquor flavor substance improvement, and has great industrial application value.

The present invention provides a composition containing a hexafluoropropylene trimer represented by C9F18 for replacing a heat transfer fluid containing at least one selected from the group consisting of perfluorotripropylamine, perfluoropolyether, and methoxytridecafluoroheptene isomer mixtures.

The invention provides a preparation method of an anti-dehumidification fluorine-containing polymer filter membrane aiming at the problem that the existing fluorine-containing polymer filter membrane is easy to dehumidify, and belongs to the technical field of membrane separation. The method comprises the following steps: (1) directly infiltrating a fluorine-containing polymer filter membrane by using a monomer (such as perfluoro (4-methyl-3, 6-dioxa-7-octene) sulfonyl fluoride or dodecafluoro-6-heptylene-1-sulfonyl fluoride) of which one end of a molecular chain contains a reactive perfluoroalkyl group and the other end contains a hydrophilic group without alcohol pre-wetting; (2) irradiating the infiltrated filter membrane with ultraviolet light (such as a mercury lamp, excimer laser, an LED or a microwave electrodeless lamp); (3) soaking the treated filter membrane in a perfluoro solvent and an alcohol solvent in sequence; and (4) sequentially soaking the treated membrane in an alkaline liquid, an acidic liquid and deionized water for 1-60 minutes respectively. The prepared filter membrane has excellent anti-dehumidification performance and can be widely applied to the fields of gas separation, liquid filtration and the like.

The application relates to the field of organic synthesis and discloses a method for synthesizing campholenic aldehyde, which comprises the following steps: contacting 2,6,6-trimethyl-bicyclo[3.1.1]hept-2-ene and an oxidant in the presence of a first catalyst and a second catalyst, wherein the oxidant is an organic solution of a neutral organic peroxide, the first catalyst is an oxidation catalyst, and the second catalyst contains alkali metals and / or alkaline earth metals. The method can directly prepare campholenic aldehyde through two reactions of epoxidation and isomerization rearrangement in the same reaction system, the reaction process is reduced, the selectivity and yield of the campholenic aldehyde product are relatively high, the catalyst is easy to separate and has high recycling utilization rate, and the method has the advantages of simple operation steps and low production cost.

The invention discloses a pressure-sensitive adhesive for an anti-static polaroid protective film and a preparation method thereof, and the pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 30-40 parts of a water-based acrylate pressure-sensitive adhesive, 10-20 parts of Arabic gum, 10-20 parts of carrageenan, 2-acrylic acid-hexahydro-4, 4, 6-trimethyl-1, 3-pentanediol monoisobutyrate, 1-3 parts of a surfactant, 1-3 parts of an anti-static agent, 1-3 parts of an anti The preparation method comprises the following steps: adding 1 to 3 parts of 2, 7-methylene-1H-indenyl ester, 1 to 3 parts of 5-vinyl bicyclo [2.2. 1] heptyl-2-ene, 1 to 3 parts of a rosinyl acrylamide monomer, 5 to 8 parts of 1-allyl-3-vinyl imidazole chlorine salt, 0.8 to 1.5 parts of a hyperbranched water-soluble conjugated polymer, 0.5 to 1.5 parts of N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, 0.3 to 0.6 part of vinylethylene carbonate and 1 to 3 parts of N-acryloylmorpholine into a reaction kettle; 0.5 to 1.5 parts of an initiator and 15 to 25 parts of water. The pressure-sensitive adhesive has the advantages of good bonding performance, excellent antistatic performance, high temperature and high humidity resistance, good aging resistance and high light transmittance.

Polymorphs and crystalline forms of 2-fluoro-5-((5S,5aS,6S,9R)-1-fluoro-12-(((2R,7aS)-2-fluorotetrahydro-1H-pyrrolizine-7a(5H)-yl)methoxy)-5-methyl-5a,6,7,8,9,10-hexahydro-5H-4-oxa-3,10a,11,13,14-pentaza-6,9-methanonaphtho[1,8-ab]heptalen-2-yl)-3-methyl-4-(trifluoromethyl)aniline (compounds of chemical formula (I)), pharmaceutical compositions thereof, and methods of using them, for example, in the treatment of cancer are provided herein. A synthesis process for the preparation of a compound of formula (I) (i.e., 2-fluoro-5-((5S,5aS,6S,9R)-1-fluoro-12-(((2R,7aS)-2-fluorotetrahydro-1H-pyrrolizine-7a(5H)-yl)methoxy)-5-methyl-5a,6,7,8,9,10-hexahydro-5H-4-oxa-3,10a,11,13,14-pentaza-6,9-methanonaphtho[1,8-ab]heptalen-2-yl)-3-methyl-4-(trifluoromethyl)aniline) is also provided herein. Compounds useful for the synthesis thereof (e.g., compounds of formulas (A), (B), (By), and (H)) and a synthesis process relating thereto are also provided.

The invention discloses durian essence and a preparation method thereof, and the durian essence is prepared from the following raw materials: 2.0 to 3.8 percent of methyl 2-methylbutyrate, 1.6 to 3.4 percent of ethyl 2-methylbutyrate, 0.8 to 1.6 percent of 3-mercaptohexyl acetate, 0.4 to 1.2 percent of dipropyl disulfide, 0.01 to 0.1 percent of 4-mercapto-4-methyl-2-pentanone, 0.8 to 2.0 percent of citral, 1.5 to 3.0 percent of hops tincture, 1.0 to 2.2 percent of 2, 6-dimethyl-5-heptenal and 80.0 to 88.0 percent of solvent. According to the durian essence, a certain amount of acetic acid 3-mercaptohexyl ester and citral are added into common durian essence components such as methyl 2-methylbutyrate and dipropyl disulfide, and on the basis that the storage stability of the durian essence is guaranteed, the pure and full aroma profile of durian can be highly restored.

The present application relates to bicyclo[2.2.1]heptane and bicyclo[2.2.1]heptene derivatives, methods of making them, and methods of using them as flavor and fragrance ingredients in food, cosmetic, pharmaceutical, consumer, and other compositions and products.

This invention provides a method for preparing methylheptenone via the Saucy-Marbet reaction of 2-methyl-3-buten-2-ol and 2-methoxypropylene. By controlling the content of key impurities tert-amyl alcohol and water in the raw materials, a reaction conversion rate of ≥99.5% and a reaction selectivity of ≥98.5% can be achieved. The catalyst used in this invention is inexpensive and readily available, the reaction conditions are mild, the operation is simple, and the reaction yield is high. This method solves the problems of existing processes, such as excessive waste, complex side reactions, and difficulties in product purification.

The invention belongs to the technical field of fine chemical engineering, and particularly relates to a synthesis method of (E, Z)-2, 6-nonadien-1-ol and (E, Z)-2, 6-nonadienal. The method comprises the following steps of: reacting cis-leaf alcohol serving as a starting material with phosphorus oxybromide to generate cis-1-bromo-3-hexene, reacting the cis-1-bromo-3-hexene with magnesium metal to obtain cis-3-hexenyl Grignard magnesium bromide, reacting the cis-3-hexenyl Grignard magnesium bromide with formaldehyde to generate cis-4-heptene-1-alcohol, oxidizing the cis-4-heptene-1-alcohol with sodium hypochlorite under the catalysis of a catalyst 2, 2, 6, 6-tetramethylpiperidine oxide to obtain cis-4-heptene-1-aldehyde, and separating the cis-4-heptene-1-aldehyde from the cis-4-heptene-1-aldehyde. The preparation method comprises the following steps: reacting (E, Z)-2, 6-nonadienoic acid methyl ester with methoxyl formyl methylene triphenyl halophosphine in the presence of potassium tert-butoxide to obtain (E, Z)-2, 6-nonadienoic acid methyl ester, reducing the (E, Z)-2, 6-nonadienoic acid methyl ester with NaBH4 to obtain (E, Z)-2, 6-nonadien-1-ol, and finally oxidizing the (E, Z)-2, 6-nonadienal with sodium hypochlorite under the catalysis of a catalyst 2, 2, 6, 6-tetramethylpiperidine oxide to obtain (E, Z)-2, 6-nonadienal. The method is environment-friendly, low in cost and suitable for industrial production.

The present invention relates to a process for the preparation of 6-(nitrooxy)-hexanoic acid (1S,2E)-3-[(1R,2R,3S,5R)-2-[(2Z)-7-(ethylamino)-7-oxo-2-hepten-1-yl]-3,5-dihydroxycyclopentyl]-1-(2-phenylethyl)-2-propen-1-yl ester of formula (I). According to the present invention, the compound (I) can be efficiently prepared in high purity by coupling bimatoprost in boronate protected form with 6-(nitrooxy)hexanoyl chloride and removing the boronate protecting group. The present invention also relates to a process for the preparation of 6-(nitrooxy)hexanoic acid having a HPLC purity equal to or greater than 99% and containing 6-{[6-(nitrooxy)hexanoyl]oxy}hexanoic acid (compound (IXa)) in an amount equal to or lower than 0.2%.

The invention belongs to the technical field of health pest prediction, prevention and control, and provides a mosquito trapping composition and application thereof. The mosquito trapping composition is prepared from 8.5 to 10 parts of hexanoic acid, 8 to 10.5 parts of ammonium bicarbonate, 20 to 28 parts of L-lactic acid, 5 to 10 parts of octenol, 3 to 6 parts of capraldehyde, 0 to 6 parts of undecanal, 8 to 10 parts of methyl heptenone and 2 to 4 parts of acetophenone. According to the bionic mosquito attractant, a plurality of inducing factors are organically integrated to achieve a bionic effect, mosquitoes can be more effectively attracted through the synergistic effect of the components, and the problems that an existing mosquito attractant is poor in environmental compatibility, poor in attraction pertinence to some mosquitoes, limited in attraction capacity, complex in preparation process and the like are solved.

An aerosol generating material comprising at least two non-tobacco botanical materials, the aerosol generating material produces an aerosol when heated, the aerosol comprising: a first compound selected from the list consisting of: 2-methoxy- phenol, 2-methoxy-4-vinylphenol, vanillin, benzeneacetic acid, phenylethyl alcohol, maltol, and combinations thereof; and a second compound selected from the list consisting of: D-limonene, alpha-terpineol, levomenthol, menthol, 3-methyl butanoic acid, 2-methoxy phenol, terpinene-4-ol, 6-methyl-5-hepten-2-one, 1H-pyrrole-2- carboxaldehyde, alpha-methyl-benzenemethanol, theobromine, octadecanoic acid, n- hexadecanoic acid, methyl-ester-hexadecanoic acid, butyrolactone, caffeine, 9- octadecenoic acid, furfural, 2-methyl butanoic acid, 2,3-dihydrobenzofuran, 2- heptadecanone, and combinations thereof.

The invention relates to the technical field of synthesis of a 5H-dibenzo [a, d] cycloheptene skeleton, in particular to a synthesis method of the 5H-dibenzo [a, d] cycloheptene skeleton. Comprising the following steps: sequentially adding a catalyst, a ligand, alkali, a reactant I, a reactant II, a p-xylene solution and a magneton 5 into a reactor, connecting a condensing pipe, introducing condensed water from bottom to top, putting the reactor into an oil bath pan at 60-100 DEG C, heating, stirring and reacting for 6-24 hours, terminating the reaction, and purifying the product to obtain a 5H-dibenzo [a, d] cycloheptene skeleton product; the reactant I comprises 2-(2-bromophenyl)-1-acetophenone, 2-(2-bromophenyl)-1-(4-methylphenyl) ethanone, 2-(2-bromo-5-methylphenyl)-1-acetophenone or 2-(2-bromo-4-methoxyphenyl)-1-acetophenone, and the reactant II comprises 2-(2-bromophenyl)-1-(4-methylphenyl) ethanone, 2-(2-bromo-5-methylphenyl)-1-acetophenone or 2-(2-bromo-4-methoxyphenyl)-1-acetophenone; the reactant II comprises bicyclo [2.2. 1] heptyl-2, 5-diene-2, 3-dimethyl dicarboxylate, and the reactant II comprises bicyclo [2.2. 1] heptyl-2, 5-diene-2, 3-dimethyl dicarboxylate; the method is mild in reaction condition, high in selectivity, relatively high in yield and environment-friendly; the active product can be used in the field of synthesis of drugs, pesticides and paint dyes.

The application discloses an environmentally-friendly submerged electronic cooling liquid, which contains long-chain hydrofluoroolefin 5,5,6,6,7,7,-heptafluoro-4,4-bis(trifluoromethyl)-1-heptene, and further contains one or more than two of type I hexafluoropropylene trimer, perfluorocycloalkene 1,3,3,4,4,5,5-heptafluoro-2-(perfluoroprop-2-yl)cyclopent-1-ene and 3,3,4,4,5,5-hexafluoro-1,2-bis(perfluoroprop-2-yl)cyclopent-1-ene; and the preparation method of the electronic cooling liquid is as follows: adding one, two or three of type I hexafluoropropylene trimer and perfluorocycloalkene into the long-chain hydrofluoroolefin and stirring. The electronic cooling liquid of the application introduces C=C double bond structure or / and cyclic structure into fluorine-containing compounds, reduces dielectric constant and GWP100 value, improves the electrical signal stability of the used electronic components, and reduces the damage to the environment; and the preparation method is simple and easy to realize.

The present disclosure relates to a method for separating 1-hexene, 1-heptene and 1-octene from a hydrocarbon stream, wherein the method comprises: S1, pre-extractive rectification of a deoxygenated C6-C8 single carbon fraction stream with a first complex extractant in a pre-extractive rectification column to obtain a pre-extractive rectification column bottom stream; S2, extractive rectification of the pre-extractive rectification column bottom stream with a second complex extractant in an extractive rectification column to obtain an extractive rectification column bottom stream; S3, de-extracting the extractive rectification column bottom stream to obtain an olefin mixture stream; S4, fine fraction de-heavy of the olefin mixture stream to obtain a 1-olefin stream and a fine fraction de-heavy column bottom stream; S5, contacting the fine fraction de-heavy column bottom stream with an isomerization catalyst to react to obtain a reaction material; and S6, returning the reaction material to S4 for the fine fraction de-heavy. The method provided by the present disclosure can make full use of the olefin resources in the hydrocarbon stream, effectively improve the yield of 1-olefin, and obtain olefin with high purity and low separation energy consumption.

The invention relates to a synthesis method of oseltamivir phosphate, which comprises the following steps: by taking (1R, 5R, 6R)-trans-5-(1-ethyl propoxy)-7-oxobicyclo [4.1. 0] hept-3-ene-3-carboxylic acid ethyl ester as a starting raw material, reacting with acetonitrile under the catalysis of indium chloride to synthesize (3aR, 4R, 7aR)-2-methyl-4-(pent-3-alcohol oxy)-3a, 4, 7, 7a-tetrahydrocyclohexene [2, 1-d] [1, 3] oxazole-6-ethyl formate; the preparation method comprises the following steps: synthesizing (3R, 4R, 5S)-4-(acetamido)-5-[(diphenylmethylene) amino]-3-(pent-3-oxyl) cyclohexene-1-ethyl formate by using ethyl acetate as a raw material, performing ring-opening reaction with benzophenonimine under the catalysis of cuprous iodide and cesium carbonate to synthesize (3R, 4R, 5S)-4-(acetamido)-5-[(diphenylmethylene) amino]-3-(pent-3-oxyl) cyclohexene-1-ethyl formate, hydrolyzing benzophenone to synthesize oseltamivir, and reacting with phosphoric acid to synthesize oseltamivir phosphate. The method has the advantages of short synthetic route, low cost, easily available initial raw materials, simple operation, few and controllable reaction impurities, and suitableness for industrial production.

This invention discloses a method for synthesizing (1S,4R)-4-amino-2-cyclopentene-1-carboxylic acid methyl tartrate and its analytical method. The synthesis method includes the following steps: using methanol as the reaction medium, (±)-2-azabicyclo[2.2.1]hept-5-en-3-one reacts with an acylation reagent to obtain cis-4-amino-2-cyclopentene-1-carboxylic acid methyl tartrate hydrochloride; using methanol solution as the reaction medium, cis-4-amino-2-cyclopentene-1-carboxylic acid methyl tartrate hydrochloride is mixed with a resolving agent for resolution, followed by crystallization to obtain the target product (1S,4R)-4-amino-2-cyclopentene-1-carboxylic acid methyl tartrate. The method of this invention is more environmentally friendly, effectively solves the hidden danger of hydrogen chloride leakage, and optimizes the amount of tartaric acid by the solubility difference between the tartrate salts of (1S,4R) and (1R,4S) chiral enantiomers. A specific reversed-phase chiral chromatography method is used to detect the chiral purity of the product.