297 results about "Heptene" patented technology

The invention is for a process for producing propylene and hexene (along with ethylene, pentenes, product butenes, heptenes and octenes) by metathesis from butenes (iso-, 1- and cis and trans 2-) and pentenes and then aromatizing the hexenes (along with higher olefins, such as heptenes and octenes) to benzene (along with toluene, xylenes, ethylbenzene and styrene). Since the desired products of the metathesis reaction are propylene and hexene, the feed to the metathesis reaction has a molar ratio for 1-butene:2-butene which favors production of propylene and 3-hexene with the concentration of hexenes and higher olefins in the metathesis product being up to 30 mole %. An isomerization reactor may be used to obtain the desired molar ratio of 1-butene:2-butene for the feed composition into the metathesis reactor. After the metathesis reaction, of hexene and higher olefins are separated for aromatization to benzene and other aromatics.

The present invention provides a system, method and catalyst for olefin hydration. The method includes hydrating the olefin using a base treated, sulfonated, halogenated and acid regenerated thermally stable catalyst. In several variants, the olefin hydration comprises butene hydration, propene hydration, hydration of cyclohexene, propylene hydration, pentene hydration, hexene hydration, and heptene hydration. The present invention also provides a method of making a catalyst for olefin hydration, and provides alcohols manufactured by the catalyst(s), systems and methods described herein.

Disclosed herein are azeotrope and near-azeotrope compositions comprising 1,1,1,2,2,4,5,5,6,6,7,7,7-tridecafluoro-3-heptene (HFC-162-13mczy, CF₃CF₂CH═CFCF₂CF₂CF₃) and 1,1,1,2,2,3,5,5,6,6,7,7,7-tridecafluoro-3-heptene (HFC-162-13mcyz, CF₃CF₂CF═CHCF₂CF₂CF₃) and hydrogen fluoride (HF) and to azeotrope and near-azeotrope compositions comprising 1,1,1,2,2,3,4,5,5,6,6,7,7,7-tetradecafluoroheptane and hydrogen fluoride (HF). These compositions are useful in processes to produce and purify HFC-162-13mcyz, HFC-162-13mczy and HFC-63-14mee.

The invention provides a Hyphantria cunea Drury attractant composition, its application and attracting core. The Hyphantria cunea Drury attractant composition includes Hyphantria cunea Drury sex pheromone and its synergistic agent. The synergistic agent contains one or more of the following plant source smell components: beta-ocimene, hexanal, cis-3-hexenal, diacetone alcohol, diisopropylcarbinol, 6-methyl-5-heptene-2-one, trans-3-hexenol, o-xylene, hemimellitene, trans-2-hexenal, and limonene. The attractant composition provided in the invention can be prepared into an attracting core so as to be used cooperatively with the existing Hyphantria cunea Drury sex pheromone. The invention provides the attracting core containing the Hyphantria cunea Drury attractant composition to prevent, control and detect Hyphantria cunea Drury, so that the defects of high cost and difficult popularization of imported and domestic Hyphantria cunea Drury sex pheromone attracting cores in the prior art are solved. The attracting core provided in the invention has the advantages of low cost, flexible use, and higher trapping efficiency.

The invention improves a preparation method of 3, 5-dihydroxy heptyl-6-gadoleic acid derivative. Asymmetric reduction is performed on intermediate 3-hydroxy-5-oxo-6-heptenoic acid ester derivative, alkali hydrolysis is performed on the obtained 3, 5-dihydroxy heptyl-6-heptenoic acid ester derivative crude product which is treated by alkali hydrolysis to obtain 3, 5-dihydroxy heptyl-6-gadoleic acid sodium salt derivative which is extracted and purified to obtain 3, 5-dihydroxy heptyl-6-gadoleic acid sodium salt derivative solution, then 3, 5-dihydroxy heptyl-6-gadoleic acid sodium salt derivative is converted into 3, 5-dihydroxy heptyl-6-gadoleic acid derivative, and 3, 5-dihydroxy heptyl-6-gadoleic acid sodium salt derivative is again converted into 3, 5-dihydroxy heptyl-6-gadoleic acid ester derivative with high yield, and purification methods such as recrystallization are performed to obtain purified 3, 5-dihydroxy heptyl-6-gadoleic acid ester derivative. The purified 3, 5-dihydroxy heptyl-6-gadoleic acid ester derivative is then hydrolyzed into 3, 5-dihydroxy heptyl-6-gadoleic acid sodium salt derivative which is finally converted into 3, 5-dihydroxy heptyl-6-gadoleic acid calcium salt derivative. 3, 5-dihydroxy heptyl-6-gadoleic acid derivative with high quality is obtained.

The invention discloses a method for discriminating the truth of fermented beef ham through detecting the compositions of a flavor substance by a gas chromatography-smelling method/a gas chromatography-mass spectrometry method. The method comprises the following steps: when a sample of a flavor substance of fermented beef ham to be detected is prepared through dynamic headspace purging and trapping, the suitable purging time of nitrogen gas is 30 minutes; when the flavor substance is detected by utilizing the gas chromatography-mass spectrometry method, the fermented beef ham contains fifteen flavor substance compositions: namely, 2-propylene-1-mercaptan, dimethyl benzene methanol, 3-methyl butyraldehyde, benzaldehyde, methyl-5-heptene-2-ketones, acetophenone, alpha-pinene, beta-pinene, styrene, dipentene, biphenyl, naphthalene, 2-methyl naphthalene, phenol, eucalyptus essential oil and anethole; and when the compositions of the smelling flavor substance are detected by the chromatography-smelling method, the fermented beef ham contains trimethyl butyraldehyde, benzaldehyde, dimethyl disulfide, naphthalene, alpha-pinene and benzothiazole. The method can be widely applied to quality detection and discrimination; and the process design, improvement and management of the fermented beef ham.

The present invention proposes a method for synthesizing clethodim, comprising 3,5-heptadiene-2-one (formula II) and ethanethiol for nucleophilic addition to prepare clethodim intermediate 6-ethylthio ‑3‑heptene‑2‑ketone (formula III); formula III reacts with dimethyl malonate and propionyl chloride to prepare (±)‑3‑[propionyloxy]‑5‑[ 2-(Ethylthio)propyl]-6-[methoxyformyl]cyclohex-2-enone (Formula V); Formula V is then rearranged, hydrolyzed and decarboxylated to obtain (±)-2- [Propionyl]-3-[hydroxyl]-5-[2-(ethylthio) propyl]cyclohex-2-enone (formula VIII); formula VIII reacts with chloroallyloxyamine to obtain alkene Clethodim (formula I), the method for preparing clethodim by using intermediate 3,5-heptadiene-2-one (formula II) in the present invention is proposed for the first time, and the clethodim (formula I) prepared by this method is generally The yield is high, the product quality is good, and the method has low production cost and little environmental pollution, and is suitable for large-scale production.

The invention discloses an oxygen bridge bicyclo-[2.2.1]-heptene compound containing different functional side chain structures, as well as preparation and application thereof. The preparation comprises the following steps that furan derivatives which contain different functional side chain structures (2,3-glycol butyl, N,N-diethoxy ethylamino, 2-pyrrolidinyl ethyl, 2-piperidine ethyl and alkyl acid) and are synthesized from 3,4-bis(4-methyoxy-phenyl)furan reacts with vinyl sulfonamide derivatives at 90 DEG C for 12 hours in one step without solvent or catalyst to prepare the oxygen bridge bicyclo-[2.2.1]-heptene compound containing basic side chains and other functional side chain groups. In-vitro experiments indicate that, compared with an existing anti-breast cancer drug tamoxifen, thenovel sulfamide type oxygen bridge bicyclo-[2.2.1]-heptene compound has stronger inhibiting activity on MCF-7 cells, and has excellent protein degrading activity and equivalent degrading performance as that of existing drug fulvestrant.

The present invention discloses a method for synthesizing delta-dodecalactone, which comprises the following steps: (1) condensating and dehydrating: under the present of a phase-transfer catalyst under an alkaline condition, causing aldol condensation between cyclopentanone and heptanal, and dehydrating for generating 2-heptene cyclopentanone under the function of an acid catalyst; (2) hydrogenating: causing the 2-heptene cyclopentanone to hydrogenate under the presence of ion exchange resin for obtaining 2- heptyl cyclopentanone; (3) oxidizing: causing a Baeyer-Villiger oxidation reaction between the 2- heptyl cyclopentanone and hydrogen peroxide for obtaining a crude product; and (4) refining: obtaining a pure product from the crude product through molecular distillation. The method for synthesizing delta-dodecalactone has the following advantages: easy method application, simple operation, higher yield, and easy available raw material. The yield of the target product delta-dodecalactone is improved, and the purity is greatly improved. The product purity is larger than 99.0%, and the yield is above 80%. The catalyst used in the method has the characteristics such as capability of being used repeatedly.

The invention provides a method for preparing methyl heptenone by using 3-methylcrotonaldehyde, which comprises the steps of condensation and selective reduction, wherein the step of condensation comprises the sub-steps of adding acetone and a catalyst, and dropwise adding 3-methylcrotonaldehyde; and the step of selective reduction comprises the sub-steps of adding materials and carrying out hydrogenation reaction; and the sub-step of adding materials, namely adding 1 part of methyl diheptenone, 0-10 parts of a solvent, and 0.001-0.05 part of transition metal Pd/Rh catalyst precursor compounds and diphosphine ligand compounds into a reaction kettle. According to the invention, through two-step reaction, the mole yield of the methyl diheptenone to 3-methylcrotonaldehyde is high, and the methyl heptenone product content reaches 98.0-98.7%; in the step of selective reduction, the conversion rate of methyl diheptenone is greater than or equal to 99.0%, and the selectivity reaches 90.8-94%; and in the step of condensation, the conversion rate of 3-methylcrotonaldehyde is 99.0%, and the mole yield of the methyl diheptenone to 3-methylcrotonaldehyde reaches 89.8-92.7%.

A method of recovering acrylic acid from a mixture comprising acrylic acid, water and acetic acid is disclosed, which includes: (a) extracting acrylic acid from the mixture with a solvent mixture comprising ethyl acrylate as the preponderant component thereof and an organic co-solvent selected from the group consisting of toluene, heptane, 1-heptene, methylcyclohexane, cycloheptane, cycloheptadiene, cycloheptatriene, 2,4-dimethyl-1,3 pentadiene, methylcyclohexene and methylenecyclohexene to form an extracted composition; and (b) azeotropically distilling the extracted composition to recover acrylic acid. Also disclosed is an alternate method of recovering acrylic acid which includes: (a) providing a feed stream containing acrylic acid, water, acetic acid, ethyl acrylate and an organic co-solvent selected from the group consisting of toluene, heptane, 1-heptene, methylcyclohexane, cycloheptane, cycloheptadiene, cycloheptatriene, 2,4-dimethyl-1,3 pentadiene, methylcyclohexene and methylenecyclohexene to a distillation column, wherein the weight ratio of ethyl acrylate to the organic co-solvent is from about 80:20 to about 95:5; and (b) azeotropically distilling said feed stream to provide an acrylic acid residue stream.

This invention relates to a catalyst system for bicyclo [2.2.1] hept-2-ene and its derivatives, its preparation method and its application. The catalyst system comprises: carrier, major catalyst and auxiliary catalyst. The carrier is MgCl2.xROH (x = 1-3, ROH is C3-C8 alcohol) or silica gel. The auxiliary catalyst is methylaluminoxane. The major catalyst is nickel complex with ligands containing nitrogen and oxygen. The catalyst system is prepared by supporting nickel complex with spherical MgCl2 carrier or silica gel carrier. This invention has such advantages as simple process, abundant raw materials and high catalytic activity.

The invention provides a synthetic method of terbinafine. Monomethylamine, 1-chloromethyl naphthalene and 1-chloro-6,6-dimethyl-2-heptene-4-alkyne are subjected to a one-step reaction to generate theterbinafine. Particularly, the monomethylamine is slowly added into a solvent, and then an acid-binding agent is added; the 1-chloromethyl naphthalene and the 1-chloro-6,6-dimethyl-2-heptene-4-alkyneare simultaneously slowly dropwise added, and a dropwise adding speed is controlled so as to enable both the 1-chloromethyl naphthalene and the 1-chloro-6,6-dimethyl-2-heptene-4-alkyne to be simultaneously dropwise added up; a temperature control reaction is performed for 2 to 3 hours at a temperature of 10 to 20 DEG C; chloroform is added to extract reaction liquid, vacuum concentration is carried out on an organic layer to a dry state, and ethyl acetate is added into residues to carry out crystallization to obtain the terbinafine. The synthetic method is high in yield, simple in step and convenient to operate, generates few byproducts, and is beneficial to industrial production.

Melt-blown fiber having an average diameter of not more than 5.0 [mu]m, said fiber comprises at least 85 wt% of a propylene copolymer, wherein DEG said melt blown fiber and/or said propylene copolymer has/have a melt flow rate MFR2 (230 DEG C) measured according to ISO 1133 of at least 200 g/10min, DEG said propylene copolymer has a comonomer content of 0.5 to 5.5 wt%, the comonmers are ethylene and/or at least one C4 to C20 a-olefin selected from the group consisting of 1-butene, 1-pentene, 1-hexene, 1-heptene, and 1-octene, DEG the propylene copolymer has 13C-spectroscopy, and DEG said melt blown fiber and/or said propylene copolymer fulfill(s) the equation (1).; wherein Tm [DEG C] is the melting temperature [given in DEG C] of melt blown fiber said and/or of said propylene copolymer measured according to ISO 11357-3, C2 [wt%] is the amount [given in weight percentage] of comonomers within said melt blown fiber and/or within said propylene copolymer determined with Fourier transform infrared spectroscopy (FTIR).

The invention relates to the technical field of fluorine-containing cleaning agents, and provides a halogenated olefin combined solvent containing 1-chloro-2, 3, 3-trifluoropropene. The halogenated olefin combined solvent is prepared from the following components in parts by mass: 3 to 90 parts of 1-chloro-2, 3, 3-trifluoropropene, 5 to 95 parts of trans-1, 2-dichloroethylene; and 0.2 to 5 parts of methyl perfluoroheptene ether. According to the invention, the synergistic effect of the three substances is utilized; azeotrope or approximate azeotrope can be formed, the obtained combined solventis stable, free of flash point, low in toxicity and corrosivity, good in material compatibility, good in dissolving and removing capacity for pollutants and high in volatilization drying speed, the ODP value (ozone consumption potential value) is zero, and the GWP value (global warming potential value) is extremely low. The invention also provides an application of the halogenated olefin combinedsolvent in a cleaning agent, a diluent and an aerosol.

The invention discloses a synthesizing method of 2, 6-dimethyl-5-heptene aldehyde, which comprises the following steps: 1) dissolving 6-methyl-5-heptene-2-ketone and aluminium isopropoxide with molar rate at 1:0.35-1 into benzene or toluene solution; reducing under 60-120 deg.c; hydrolyzing into 6-methyl-5-heptene-2-alcohol; 2) halogenating 6-methyl-5-heptene-2-alcohol and halogenating agent with molar rate at 1:0.35-2 under -10-80 deg.c to produce 2-chlorine-6-methyl-5-heptene or 2-bromine-6-methyl-t-heptene; 3) reacting 2-chlorine-6-methyl-5-heptene or 2-bromine-6-methyl-t-heptene and magnesium to produce Grignard reagent; allocating the composition and formic ether with molar rate at 0.5-1:1 under -10-30 deg.c to do Grignard additional reaction; hydrolyzing; decompressing; distilling; obtaining the product.

The invention discloses an oxo-bridged bicyclo-heptylene sulfonamides compound containing different alkyl chain lengths, as well as a preparation method and application thereof, and belongs to the technical field of medicines. 3-(4-hydroxycyclohexyl phenyl)-4-(4-alkoxy phenyl)-furan and a phenylethylene sulfonamide derivative are adopted as raw materials, no catalyst is needed, the raw materials are reacted at 90 DEG C for 8 hours, and the oxo-bridged bicyclo-heptylene sulfonamides compound containing the different alkyl chain lengths is obtained through one-step preparation. The action mode of the oxo-bridged bicyclo-heptylene sulfonamides compound is different from the action mode of existing anti-breast cancer drug tamoxifen, and the compound not only can be used for effectively inhibiting the growth of a breast cancer cell MCF-7, but also has favorable estrogen receptor alpha down-regulation activity equivalent to fulvestrant, and shows an application prospect of the compound in breast cancer therapy.

The invention discloses application of a para-position phenyl-containing alpha-nickel diimine (II) complex to catalysis of 3-heptene for chain walking polymerization. The para-position phenyl-containing alpha-nickel diimine (II) complex is used as a chain walking catalyst for catalyzing the monomer 3-heptane for a polymerization reaction; through the conjugate effect of phenyl, the chain walking speed of nonterminal olefin is accelerated; and under the activation of cocatalyst dried and modified methylaluminoxane (dMMAO), the 3-heptene is catalyzed for a chain walking polymerization reaction through the chain walking catalyst, wherein the structural general formula of the para-position phenyl-containing alpha-nickel diimine (II) complex and a relevant polymerization process are shown in the description. A catalysis system involved in the invention realizes the polymerization of the 3-heptane through chain walking behaviors; and an amorphous polymer with a stable branching degree (about139 branch chains/1000 carbon; and Tg is about minus 68 DEG C) is generated. It is shown, by the NMR (Nuclear magnetic resonance) analysis of the polymer, that obtained poly(3-heptene) has ethyl, propyl and butyl branch chains and a small number of methylene sequences with long chains isomerized by monomers.

The invention discloses a method for preparing spice 5-methyl-2-hepten-4-one with nutty aroma. The method comprises the following steps of: reacting acetoacetate serving as a raw material with 2-methylbutyryl chloride to obtain an intermediate of 2-methylbutyryl acetate; and condensing the intermediate with acetaldehyde to prepare the product of 5-methyl-2-hepten-4-one. The used acetoacetate, 2-methylbutyryl chloride and acetaldehyde are commercial products, and the reaction raw materials are readily available, namely the raw materials are low in cost. In addition, the method avoids a Grignard reaction and stoichiometric oxidation, and is environmentally-friendly, easy to operate and suitable for industrialization.

A method of recovering acrylic acid from a mixture comprising acrylic acid, water and acetic acid is disclosed, which includes: (a) extracting acrylic acid from the mixture with a solvent mixture comprising ethyl acrylate as,the preponderant component thereof and an organic co-solvent selected from the group consisting of toluene, heptane, 1-heptene, methylcyclohexane, cycloheptane, cycloheptadiene, cycloheptatriene, 2,4-dimethyl-1,3 pentadiene, methylcyclohexene and methylenecyclohexene to form an extracted composition; and (b) azeotropically distilling the extracted composition to recover acrylic acid. Also disclosed is an alternate method of recovering acrylic acid which includes: (a) providing a feed stream containing acrylic acid, water, acetic acid, ethyl acrylate and an organic co-solvent selected from the group consisting of toluene, heptane, 1-heptene, methylcyclohexane, cycloheptane, cycloheptadiene, cycloheptatriene, 2,4-dimethyl-1,3 pentadiene, methylcyclohexene and methylenecyclohexene to a distillation column, wherein the weight ratio of ethyl acrylate to the organic co-solvent is from about 80:20 to about 95:5; and (b) azeotropically distilling said feed stream to provide an acrylic acid residue stream. A further embodiment of this invention involves directing the recovered acrylic acid stream to a distillation tower wherein a vapor or liquid side stream is obtained having a purity level of acrylic acid of at least 99%. This material can be subsequently further purified to obtain glacial acrylic acid having a purity of at least 99.8%.

This invention relates to a composition and procedure for manipulating the behaviour of codling moth larvae, Cydia pomonella (L.) (Lepidoptera: Olethreutidae). In particular, this invention relates to the use of specific pheromone components for manipulating the behaviour of C. pomonella larvae. A composition of chemicals for manipulating the behaviour of Cydia pomonella larvae, said composition comprising two or more chemicals in all possible combinations and ratios selected from the group consisting of: 1) heptanal; 2) 6-methyl-5-hepten-2-one (sulcatone); 3) myrcene; 4) octanal; 5) 3-carene; 6) (+)-limonene; 7) (E)-2-octenal; 8) nonanal; 9) (E)-2-nonenal; 10) decanal; 11) geranylacetone.