62 results about "Cyclohexene" patented technology

The invention belongs to the technical field of molecular sieve synthesis, and discloses a preparation method of a TS-1 molecular sieve for phenol hydroxylation, which comprises the following steps: dropwise adding tetraethyl orthosilicate into an aqueous solution containing tetrapropylammonium hydroxide; after clarification, dropwise adding a solution containing tetrabutyl titanate and isopropanol into the solution; carrying out hydrothermal crystallization, centrifugation, drying and calcination; the preparation method comprises the following steps: adding silica gel into an aqueous solution of tetrapropylammonium bromide and ethanolamine; dropwise adding a solution containing tetrabutyl titanate and isopropanol into the solution; adding a seed crystal; carrying out hydrothermal crystallization, centrifugation, drying and calcination; dissolving in an aqueous solution of tetrapropylammonium bromide and ethanolamine; and carrying out hydrothermal crystallization, centrifugation, drying and calcination. The method is low in cost and simple to operate, a large number of mesopores are formed in the molecular sieve, the diffusion mass transfer rate is increased, the content of hexa-coordinated titanium is greatly increased, and the catalyst has good catalytic activity in 1-hexene epoxidation, cyclohexene epoxidation, propylene epoxidation and phenol hydroxylation reactions.

The invention discloses a method for preparing high-density aviation fuel by catalyzing turpentine with Bronsted acid. The method comprises the following specific steps: step 1, regulating the strength of Bronsted acid to catalyze the isomerization reaction of terpenoids in turpentine, firstly generating cyclohexene and cyclohexadiene intermediates, and then performing Diels-Alder dimerization addition reaction on the intermediates generated by isomerization under the catalysis of the acid to generate a polycyclic high-density fuel precursor with the carbon number of 20; and 2, carrying out hydrogenation on C = C double bonds in the double-ring structure of the high-density aviation fuel precursor with the carbon number of 20 under the catalysis of a hydrogenation catalyst so as to generate the high-density aviation fuel. The invention provides a novel method for preparing high-density aviation fuel from biomass platform compound turpentine, and the whole preparation process is simple and convenient to operate.

The invention discloses a preparation method of a near-infrared two-region fluorescently-labeled phospholipid molecule and a preparation method of a lipid nano-carrier of the phospholipid molecule, and relates to the field of preparation methods of cyanine dyes. The invention aims to solve the technical problems that the application of the organic cyanine dye in a living body is limited by the hydrophobicity of the organic cyanine dye and the fluorescence intensity is low due to the aggregation quenching effect of the organic cyanine dye. The method comprises the following steps: preparing a compound 2 from 1, 8-naphthalimide and iodohexane, and then preparing C6 from the compound 2, 2-chloro-3-(hydroxymethylene)-1-cyclohexene-1-formaldehyde and sodium acetate; then C6 and mercaptobenzoic acid are used for preparing C6-COOH; the preparation method comprises the following steps: preparing C6-Lipid from N, N-diisopropylethylamine, HBTU, C6-COOH and 4-(1, 2, 2-triphenylvinyl) aniline by virtue of a hydrothermal method; the preparation method comprises the following steps: preparing a lipid nano-carrier from C6-Lipid, DMPC (Dimethyl Pyrrolidone), DOPE (Dioctyl Olefin Polyethylene) and According to the phospholipid molecule and the lipid nano-carrier thereof prepared by the invention, effective imaging of fluorophores is realized, and aggregates such as J aggregation and the like are possibly generated, so that the fluorescence quantum yield is improved, and an efficient fluorescence imaging effect is achieved. The cyanine dye prepared by the invention is used for fluorescence imaging.

The invention discloses a preparation method and application of a high-purity cannabidiol heptyl derivative CBDP, and belongs to the technical field of organic synthesis compounds. In order to solve the technical problems of low purity, complex process and high cost of cannabidiol heptyl derivatives in the prior art, the invention provides a preparation method with high purity and simple preparation process. The key points of the technical scheme are as follows: (1) 5-heptylresorcinol and (1S, 4R)-1-methyl-4-(1-methylvinyl)-2-cyclohexene-1-alcohol are dissolved in a solvent and react under the action of a Lewis acid catalyst, and a cannabidiol heptyl derivative CBDP is obtained; (2) dissolving a cannabidiol heptyl derivative CBDP in a solvent, reacting with a derivatization reagent, and purifying to obtain an intermediate 7; and (3) dissolving the intermediate 7 in a solvent, and purifying through an enzyme hydrolysis reaction to obtain the high-purity cannabidiol heptyl derivative CBDP.

The invention discloses a preparation method of beta-carotene, which comprises the following steps: dissolving 3-methyl-5-(2, 6, 6-trimethyl-1-cyclohexene-1-yl)-2, 4-pentadienyl triphenylphosphine salt (C15 phosphine salt) cis-trans isomer and 2, 7-dimethyl-2, 4, 6-octtriene-1, 8-dialdehyde (C10) in water and a solvent system incompatible with the water, and carrying out wittig reaction under the action of alkali. The reaction system can prevent the byproduct inorganic salt from being wrapped in the product and reduce the content of inorganic salt impurities in the product. In addition, the proportion of cis-trans isomers of the C15 phosphonium salt is controlled, the hydrolysis side reaction of the C15 phosphonium salt is inhibited, and the reaction yield is increased.

The application discloses a kind of preparation of thin-layer Ti-MWW titanium silicalite and its application in epoxidation reaction, belong to inorganic chemical synthesis technical field.The application adds polycyclic aliphatic amine in the synthesis process of Ti-MWW molecular sieve, and reduces the crystallization temperature in the early stage of molecular sieve crystallization to delay the growth rate of molecular sieve C axis, obtain shorter C axis thin-layer Ti-MWW, greatly improve the diffusion performance of Ti-MWW molecular sieve by this method, increase the diffusion rate of reactant molecules in channel, so that the catalytic performance of molecular sieve is greatly improved, suitable for catalyzing propylene, butylene, hexene, cyclohexene, octene liquid phase epoxidation and the like.

The invention provides a low-melting-point nucleating agent and a preparation method thereof, and relates to the technical field of nucleating agents. The low-melting-point nucleating agent comprises the following raw materials in parts by weight: 100 parts of sorbitol, 150-220 parts of an aldehyde mixture, 800-1200 parts of an organic solvent, 2-4 parts of a catalyst and 25-35 parts of a silane coupling agent, wherein the aldehyde mixture is prepared from 2, 4-dimethyl-3-cyclohexene-1-formaldehyde, 3, 5-di-tert-butyl-4-hydroxy benzaldehyde and terephthalaldehyde, and the aldehyde mixture is prepared from 2, 4-dimethyl-3-cyclohexene-1-formaldehyde, 3, 5-di-tert-butyl-4-hydroxy benzaldehyde and terephthalaldehyde. According to the low-melting-point nucleating agent and the preparation method thereof, an alpha crystal form with better heat resistance is induced to be generated, polypropylene is induced to form a uniform and fine crystal nucleus, the mechanical property of the polypropylene is enhanced, the haze is greatly reduced, and the transparency is improved.

The present application relates to the technical field of catalyst, in particular to a preparation method of TS-1 molecular sieve for olefin epoxidation; the main preparation method is as follows: tetraethyl orthosilicate is added dropwise into an aqueous solution containing tetrapropylammonium hydroxide; after the solution is clarified, a solution containing tetrabutyl titanate and isopropanol is added dropwise; after hydrolysis is completed, guanidine acetate is added; the precursor solution is obtained after stirring at a certain temperature for a period of time; the obtained solution is loaded into a kettle, and the crystallization product is obtained after hydrothermal crystallization; finally, the sheet-shaped TS-1 molecular sieve is obtained through centrifugation, drying and calcination; the present application has low cost, simple operation, short synthesis period, small size in the b-axis direction, improved diffusion mass transfer rate, and good catalytic activity in 1-hexene epoxidation, cyclohexene epoxidation, propylene epoxidation, chloropropylene epoxidation and phenol hydroxylation reaction.

The present invention belongs to the technical field of organic synthesis, and particularly relates to a preparation method of agomelatine. In the present invention, a compound with the structure shown in Formula 1, an organic solvent, a first base reagent, nitromethane and silica gel are mixed for a condensation reaction to obtain a compound with the structure shown in Formula 2; an ammonia methanol solution, the compound with the structure shown in Formula 2, cyclohexene and a palladium catalyst are mixed for an aromatization reaction, and the obtained aromatization reaction solution is subjected to a reduction reaction in a hydrogen atmosphere to obtain a compound with the structure shown in Formula 3; the compound with the structure shown in Formula 3, an organic solvent, a second base reagent and an amidation reagent are mixed for an acetylation reaction to obtain the agomelatine. The present invention adopts a one-step method for aromatization and reduction, simplifies the operation, improves the reaction yield, reduces the three wastes, and at the same time avoids the dimer impurities generated during the reduction of the cyano group. The obtained agomelatine product has high purity and is suitable for industrial production.

The invention belongs to the technical field of carbocyclic compound synthesis, and particularly relates to a preparation method of cannabidiol, which comprises the following steps: S1, carrying out amidation reaction on 2, 4-dihydroxy-6-amyl benzoate and an amidation reagent to obtain an intermediate I; s2, the intermediate I and (1S, 4R)-1-methyl-4-(1-methylvinyl)-2-cyclohexene-1-alcohol are subjected to a Friedel-Crafts alkylation reaction under the catalysis of acid, and an intermediate II is obtained; s3, under the alkaline condition, the intermediate II is subjected to a decarboxylation reaction, and cannabidiol is obtained. The raw materials used in the method are simple and low in price, intermediates obtained in the preparation process can be purified through recrystallization, operation is easy, the purity of cannabidiol is finally improved by improving the purity of the intermediates, the cannabidiol production cost is low, operation is easier and more convenient, treatment of complex procedures is reduced, and the method is suitable for industrial production. The application range is wide; industrial production is easy to realize.

The invention provides a liquid crystal composition, a liquid crystal display device containing the liquid crystal composition and application of the liquid crystal display device. The liquid crystal composition comprises at least one compound as shown in a general formula I and at least one compound as shown in a general formula II. According to the liquid crystal composition disclosed by the invention, through mutual compounding of specific structures and contents of the compounds, the liquid crystal composition has relatively large elastic constant, relatively high penetration rate, relatively small rotary viscosity and relatively good Flicker value on the basis of maintaining proper dielectric anisotropy, relatively good optical anisotropy and relatively good clearing point; the performance advantages of a compound containing a cyclohexene structure are considered, the defects of low-temperature storage stability and the like can be overcome, and the low-temperature storage stability is relatively good; a liquid crystal display device comprising the liquid crystal composition has a relatively high response speed, a relatively large contrast ratio and a relatively wide temperature application range; the liquid crystal display panel is applied to a high-contrast fast-response NFFS liquid crystal display mode. # imgabs0 #

The invention provides a preparation method of an N-alkoxy hindered amine light stabilizer Tinuvin 152, which comprises the following steps of: performing one-step oxidation process on 2, 2, 6, 6-tetramethyl-4-piperidone serving as a raw material and hydrogen peroxide to obtain a free radical intermediate II, performing alkylation reaction on the free radical intermediate II and cyclohexene to obtain an N-alkoxy piperidone intermediate as shown in a formula III, and preparing the N-alkoxy hindered amine light stabilizer Tinuvin 152 by using the N-alkoxy hindered amine light stabilizer Tinuvin 152. The intermediate and n-butylamine are subjected to hydrogenation reduction under the catalysis of 10% palladium on carbon, and 1-cyclohexyloxy-4-(n-butylamino)-2, 2, 6, 6-tetramethylpiperidine shown in the formula IV is prepared. Then carrying out substitution reaction on the formula IV and cyanuric chloride to obtain a disubstituted intermediate V with high selectivity; reacting the intermediate V with ethanolamine at a high temperature to prepare an N-alkoxy hindered amine light stabilizer Tinuvin 152; the intermediate product obtained by the process is high in yield, good in purity, short in reaction time, simple in post-treatment and convenient to operate; the product can effectively absorb ultraviolet rays, material aging and discoloration are prevented, and the service life of the product is prolonged.

The invention relates to the technical field of nucleating agents, in particular to a modified nucleating agent, a preparation method and application of the modified nucleating agent in polypropylene. The modified nucleating agent is prepared from the following raw materials: 2, 4-dimethyl-3-cyclohexene-1-formaldehyde, a benzaldehyde compound, sorbitol, a solvent and a modifier. The modifier comprises an alkyl chain of C8 to C15; the modifier is limited to contain C8-C15 alkyl chains, so that the agglomeration rate of the nucleating agent can be effectively reduced, and meanwhile, the compatibility of the modified nucleating agent and polypropylene is improved; the modified nucleating agent prepared by the invention has a lower melting point (150-180 DEG C), and has a more excellent heterogeneous nucleation effect in application of polypropylene, so that the comprehensive performance of polypropylene is improved.

The invention discloses an asymmetric synthesis method of bicyclo [2.2. 2] octane-2, 5-diketone, which comprises the following steps: taking 2-cyclohexene-1-ketone as a reaction substrate to react with triphenylchlorosilane, reacting the obtained intermediate 1 with trifluoroethyl acrylate under the action of a pre-catalyst and trifluoromethanesulfonic acid to generate an intermediate 2, and reacting the intermediate 2 with trifluoroethyl acrylate under the action of a pre-catalyst and trifluoromethanesulfonic acid to generate the bicyclo [2.2. 2] octane-2, 5-diketone. Mixing and reacting the intermediate 2 with ethylene glycol and p-toluenesulfonic acid monohydrate to obtain an intermediate 3, reducing the intermediate 3 under the action of an organic reducing agent to generate an intermediate 4, reacting the intermediate 4 with reactants of oxalyl chloride and dimethyl sulfoxide, adding triethylamine, stirring to generate an intermediate 5, and carrying out oxidative deformylation and acid hydrolysis reaction on the intermediate 5 to obtain an intermediate 2; and reacting to generate the bicyclo [2.2. 2] octane-2, 5-diketone. The synthesis method is short in synthesis step, simple to operate and high in product generation rate.

The invention discloses a method for preparing delta-damascone by using an iodine catalyst, and belongs to the technical field of flavors and fragrances. Comprising the following steps: taking 1, 3-pentadiene and isopropylidene acetone which are cheap and easy to obtain as raw materials, taking iodine as a catalyst, performing D-A reaction to synthesize 4-acetyl-3, 5, 5-trimethyl cyclohexene, and condensing the 4-acetyl-3, 5, 5-trimethyl cyclohexene and ethyl acetate in the presence of a basic catalyst to obtain 1-(2, 6, 6-trimethyl-3-cyclohexene-yl)-1, 3-butanedione; according to the present invention, the iodine catalyst is adopted to replace the traditional Lewis acid catalyst, such that the waste acid water caused by the Lewis acid post-treatment is reduced, and the method has characteristics of simple operation, safety and environmental protection. In addition, the reaction is carried out under relatively mild conditions, so that the dangerousness of the reaction process is reduced, and industrial production is easy to realize.

This invention belongs to the field of heterogeneous catalyst technology. It provides a single-atom nitrogen-doped carbon catalyst, its preparation, and its application. Ammonium metavanadate is dissolved in hot water, melamine is added to the resulting solution, and the mixture is stirred until the water evaporates to obtain a powder. The powder is collected, ground to a particle size of less than or equal to 50 micrometers, and calcined to obtain a nitrogen-doped carbon material (VN@NC support). The nitrogen-doped carbon material is weighed and dispersed in methanol and / or an aqueous solution, a metal salt aqueous solution is added, and the dispersion is stirred at room temperature and then centrifuged and dried. The resulting solid is pyrolyzed for 1-5 hours to obtain the single-atom nitrogen-doped carbon catalyst. This invention solves the problems of unsafe storage and transportation of peroxides and low reaction selectivity in organic peroxide oxidation methods. This catalyst exhibits high activity, high selectivity, and good stability, and can be used for efficient catalysis of cyclohexene epoxidation to prepare cyclohexane oxide under mild reaction conditions.

The invention discloses an asymmetric synthesis method of bicyclo[2.2.2]octane-2,5-dione, wherein 2-cyclohexene-1-one is reacted with triphenylchlorosilane as a reaction substrate, the obtained intermediate 1 is reacted with trifluoroethyl acrylate under the action of a precatalyst and trifluoromethanesulfonic acid, and the generated intermediate 2 is mixed with ethylene glycol and p-toluenesulfonic acid monohydrate to obtain intermediate 3, which is reduced by an organic reducing agent to generate intermediate 4, which is reacted with the reactants of oxalyl chloride and dimethyl sulfoxide, and triethylamine is added and stirred to generate intermediate 5, which is oxidative deformylation and acid hydrolysis to generate bicyclo[2.2.2]octane-2,5-dione. The synthesis method has short synthesis steps, simple operation, and high product yield.

This invention discloses an isothiocyanate liquid crystal compound containing 2,5-difluorosubstituted benzene and its synthesis method. The general structural formula of the disclosed compound is shown in Figure I, wherein R is an alkyl or alkoxy group with 1-10 carbon atoms, an alkenyl or alkenoxy group with 2-10 carbon atoms, a cycloalkyl group with 3-8 carbon atoms, or an alkyl group substituted with a cycloalkyl group, wherein the hydrogen atom on the carbon atom can be substituted with fluorine; Z1 and Z2 are single bonds, -C≡C-, -CH=CH-, -CF=CF-, -CH2CH2; ring A and ring B are benzene rings or cyclohexane, cyclohexene, wherein the hydrogen atom on the benzene ring can be substituted with fluorine, chlorine, methyl, or ethyl; n = 0, 1, 2. The liquid crystal compound of this invention has the advantages of a wide nematic phase temperature range, low viscosity, and high birefringence.

The invention discloses a coal dressing compound collecting agent and a preparation method thereof. The coal dressing compound collecting agent comprises the following raw materials in parts by weight: 100 parts of non-polar hydrocarbon oil, 10-50 parts of fatty acid and 1-10 parts of a surfactant, wherein the surfactant is prepared from 2-hexadecyl octadecanoic acid amido betaine and a quaternized guar gum high-molecular surfactant, and the surfactant is prepared from the following raw materials in parts by weight; the non-polar hydrocarbon oil is one or more of diesel oil, paraffin oil, poly-alpha-olefin, cyclohexene and C10-C20 olefin; the fatty acid is one or more of stearic acid, oleic acid, octanoic acid, palmitic acid and lauric acid. The coal dressing compound collecting agent can form a more stable structure with low-rank coal under the action of acting force such as hydrogen bonds, so that the collecting performance of the collecting agent on the low-rank coal is improved, and the yield of clean coal is increased.

Methods are described for controlling growth of undesirable vegetation at a locus by treating the locus with a synergistic combination comprising glufosinate and at least one herbicide selected from nitrophenyl ether class herbicides; imidazolinone class herbicides; organophosphorous class herbicides; dicarboximide class herbicides; phenoxyacetic class herbicides; pyridine class herbicides; cyclohexene oxime class herbicides; aryloxyphenoxypropionic class herbicides; triazolone class herbicides, uracil class herbicides, and combinations thereof, wherein the undesirable vegetation is selected from group consisting of Spermacoce latifolia, Brachiaria decumbens, Eleusine indica, Glycine max.

The application discloses a liquid crystal composition with low viscoelastic ratio, large dielectric adjustability and low dielectric loss and a high-frequency component, and the liquid crystal composition comprises one or more compounds represented by a general structure I; wherein R is alkyl with 1-10 carbon atoms, alkoxy, fluorinated alkyl, alkenyl with 2-10 carbon atoms, alkenyloxy, fluorinated alkenyl, fluorinated alkenyloxy, cycloalkyl with 3-8 carbon atoms or cycloalkyl-containing substituted alkyl; Z1 and Z2 are single bond, -C=C-, -CH=CH-, -CF=CF-, -CH2CH2; ring A and ring B are benzene ring or cyclohexane, cyclohexene, wherein the hydrogen on the benzene ring can be substituted by fluorine, chlorine, methyl or ethyl; and n=0 or 1. The liquid crystal composition has the advantages of large dielectric tuning rate, extremely low dielectric loss, low rotational viscosity, large elastic constant, wide nematic phase working temperature range and large low-frequency dielectric constant.

The present application relates to the fine chemical technology field, specifically to a kind of HI catalytic preparation 2-phenyl benzene-1,3-thioxin cyclohexene-4-ketone method.The yield of 2-phenyl benzene-1,3-thioxin cyclohexene-4-ketone synthesized by conventional method is low.For the above technical problem, the present application provides a kind of HI catalytic preparation 2-phenyl benzene-1,3-thioxin cyclohexene-4-ketone method, which is to add thiosalicylic acid, benzaldehyde, HI into organic solvent, and stir at a temperature higher than room temperature to obtain 2-phenyl benzene-1,3-thioxin cyclohexene-4-ketone.The raw materials in the method are easy to obtain, the operation is simple, the equipment requirement is low, the yield is as high as 95%, and it has good application prospect.

The present invention relates to a low-VOC bio-based modified DCPD hydrogenated resin device and synthesis process and its application in pressure-sensitive adhesive hot melt adhesive. Using whole distillation cracked C5 as raw material, the alkynes in the whole distillation cracked C5 raw material are prepolymerized by controlling the low temperature and residence time to generate C15 to C20 polymers. The molecular weight of the generated resin is concentrated, which solves the problem of the excessively fast polymerization rate and high activity of alkynes to produce explosive polymers and insoluble slags that affect the system and products, and improves the utilization rate of raw materials. A continuous polymerization process is adopted to convert all dicyclopentadiene monomers into DCPD resin, and the content of unpolymerized monomers is low, which reduces the energy consumption generated by the large-scale application of unpolymerized monomers. The introduction of bio-based monomers in the polymerization process makes up for the disadvantage of the lack of polar groups in the molecular structure of DCPD resin. At the same time, the introduction of vinyl cyclohexene increases the grafting rate of bio-based monomers, solving the application problem of poor compatibility between DCPD resin and elastomer.

An electrochemical cell including an additive mixture for alleviating the symptoms of overcharge is disclosed. The additive mixture may include a combination of at least two of diethyl allylphosphonate, 4-fluorobiphenyl, and 1-phenyl-1-cyclohexene. For example, an electrolyte may include allylphosphonate and 4-fluorobiphenyl. In yet another example, an electrolyte may include 1-phenyl-1-cyclohexene.

The invention relates to the field of chemistry, in particular to a compound shown in a formula (I), a preparation method and application thereof. The compound as shown in the formula (I) has remarkable biological membrane inhibition activity, can be used for preparing antibiotic drugs, and has good development and application prospects.

A thermoplastic resin composition of the present invention comprises: about 100 parts by weight of a polycyclohexylenedimethylene terephthalate resin having a crystallization temperature (Tc) of about 140 to about 170 °C for 10-15 mg of a sample, as measured using a differential scanning calorimeter (DSC) at a heating rate of 10 °C / min and a cooling rate of -5 °C / min; and about 35 to about 110 parts by weight of a polycarbonate resin. The thermoplastic resin composition has low oxygen permeability and has excellent chemical resistance, excellent high-temperature stability, excellent transparency, and an excellent balance of these properties.

The present invention relates to an anisotropically conductive heat activated adhesive composition, comprising a) one or more thermoplastic resin; b) metal coated particles; and c) a solvent selected from the group consisting of l-methoxy-2- propanylacetate,2-butoxyethyl acetate, 2-(2-butoxyethoxy)ethanol, [2-(2-butoxyethoxy)-ethyl]acetate, 2-butoxyethanol, isophorone, 3, 3, 5-trimethyl-2-cyclohexene-l-one, dimethyl succinate, dimethyl glutarate, dimethyl adipate, acetic acid, l-methoxypropan-2-ol, 1- methoxy-2-propylacetat, dipropylene glycol (mono)methylether, toluene, ethanol, isopropyl alcohol, n-propanol, ethoxy propanol, ethylacetate, butyl acetate, n-propyl acetate, isopropyl acetate, methyl ethyl ketone, methyl isobutyl ketone, glycol ethers and mixtures thereof, wherein the one or more thermoplastic resin is dissolved into the solvent. The composition can be used in electronic devices.

The invention provides a composition for increasing medicinal herb fragrance characteristics of a low-coke cigarette as well as a preparation method and application of the composition, and the composition comprises alpha-angelica lactone, crocetin, 2-cyclohexene-1-ketone, isophorone and 2, 2, 6-trimethyl-1, 4-cyclohexanedione. The invention creatively finds that the five components, namely alpha-angelica lactone, crocin, 2-cyclohexene-1-ketone, isophorone and 2, 2, 6-trimethyl-1, 4-cyclohexanedione are matched for use, so that the composition can be used for obtaining a cigarette specific medicinal herb aroma base module from the inherent aroma components of the cigarette, and the cigarette specific medicinal herb aroma base module can be used for preparing the cigarette specific medicinal herb aroma base module. Moreover, the harmony among the components and the richness of the whole fragrance can be kept, the fragrance connotation of the herb fragrance is enriched, and the defect that the fragrance of a synthetic spice with a single component is monotonous and stiff is overcome.

The invention discloses a diacid compound preparation method, which comprises: mixing a cyclic organic matter solution with micro-nano inert polymer particles to obtain a mixed solution, introducing gas into the mixed solution to generate micron bubbles, forming a gas-water interface, and carrying out a bubbling reaction to obtain a diacid compound, the cyclic organic matter in the cyclic organic matter solution comprises one or more of cyclohexanone, cyclohexene, cyclohexane or cyclohexanol; a solvent in the cyclic organic matter solution comprises water. The cyclic organic matter is oxidized to generate the diacid compound by means of the special oxidation capacity of the microbubble gas-water interface and the contact electro-catalysis technology, the preparation method can be carried out at normal temperature and normal pressure, additional oxidizing agents and catalysts do not need to be added, and the method is environmentally friendly and low in preparation cost.