438 results about "Enol" patented technology

The invention relates to the technical field of photoresist, in particular to a modification method suitable for photoresist. The photoresist is a positive photoresist and comprises phenolic polymer resin, a diazo naphthoquinone type photoinitiator, a solvent and an additive. According to the invention, a multi-carbon-based enol compound is used as a precursor to prepare a diazo naphthoquinone sulfonate type photosensitive compound, an aldehyde group carried in the diazo naphthoquinone sulfonate type photosensitive compound and an amine additive are used for grafting a photoinitiator-phenolic resin coupling product through a Schiff base reaction, and the dissolution inhibition effect of the photoinitiator-phenolic resin coupling product is adjusted; therefore, key characteristics such as resolution, etching resistance, edge roughness after exposure and development and the like of the photoresist are enhanced.

The invention relates to the technical field of pigment synthesis, and particularly discloses a synthetic method of ornamental blue. According to the synthetic method, 5-hydroxy-3-iminopyridine-2, 6-diketone is adopted as a raw material, enol interconversion is performed on the raw material under the alkaline condition (under the action of an alkali catalyst), heating is performed, and chemical condensation reaction is performed to obtain the ornamental blue. The synthetic method of the ornamental blue provided by the invention is simple in process and high in reaction selectivity, the yield and purity of the product are high, the yield of the ornamental blue product is more than or equal to 80%, the purity of the ornamental blue product is more than 99%, the synthetic method has obvious advantages, no potential safety hazard exists in the process, and industrial production can be realized.

The invention relates to a plasma metabolite composition for auxiliary diagnosis of sub-clinical mastitis of dairy cows and application of the plasma metabolite composition. The plasma metabolite combination is a first combination and / or a second combination, and the first combination is composed of glyceryl monolinoleate, 2-methylthiophene, L-cystine, (S)-(+)-citramalic acid, 9-hydroxy-10, 12-octadecadienoic acid, 16-hydroxyhexadecanoic acid, tyrosine hydroxyproline, stearoyl serotonin and histamine; the first composition is composed of 4, 5-dimethyl-2, 4, 5-trimethyloxazole, 12, 13-epoxy octadecadienoic acid, 2-cyclotetradecene-1-ketone, 4 [alpha]-carboxyl-5 [alpha]-cholest-8-ene-3 [beta]-alcohol, N-arachidonyl dopamine d8, 9 (Z) and 11 (E)-conjugated linoleic acid, and the second composition is composed of 2, 5-dihydro-2, 4, 5-trimethyloxazole, 12, 13-epoxy octadecadienoic acid, 2-cyclotetradecene-1-ketone, 4 [alpha]-carboxyl-5 [alpha]-cholest-8-ene-3 [beta]-alcohol, N-arachidonyl dopamine A product prepared based on the plasma metabolite composition and used for auxiliary diagnosis of cow subclinical mastitis is simple in use method and high in accuracy, can be used for assisting a milk somatic cell number method to diagnose cow subclinical mastitis, and reduces the probability of false negative and false positive.

The invention relates to a multi-carbonyl enol compound which has a structure as shown in a general formula I. The compound has a plurality of carbonyl enol structures. The invention further provides a synthesis method of the compound, the multi-carbon-based enol compound is prepared through an acylation reaction, a Willgerodt-Kindler reaction, a Vilsmeier-Haack-Arnold reaction and a hydrolysis reaction, the intermediate reaction step does not involve a noble metal catalyst, and the synthesis route is economical and efficient. The invention also provides a diazo naphthoquinone photoinitiator prepared by esterification and condensation of the compound as a monomer and diazo naphthoquinone sulfonyl chloride, and an application of the photoinitiator in I-line photoresist configuration. The compound disclosed by the invention is highly symmetrical in structure, has a unique enol interconversion and multi-carbonyl and hydroxyl functional group coexisting structure, and has an extremely wide application prospect.

The invention belongs to the field of flexible piezoelectric polymer materials, and discloses a polyvinylidene fluoride based ferroelectric polymer and a preparation method thereof. The preparation method comprises the following steps: (1) adding an inorganic alkaline reagent into a polyvinylidene fluoride-trifluoroethylene ferroelectric polymer solution, carrying out dehydrofluorination and nucleophilic addition-elimination reaction to generate a polymer with an enol structure, and then washing, precipitating and purifying a reaction product; and (2) re-dissolving by using an organic solvent, then forming a film by using a tape casting method, and carrying out ketone-enol tautomerization reaction in the film forming process of the tape casting method to finally prepare the polyvinylidene fluoride based ferroelectric polymer film. According to the effective modification and preparation method disclosed by the invention, an enol structure is promoted to be converted into a more stable ketone structure through a ketone-enol tautomerization reaction by utilizing a high-temperature environment in a film forming process, so that C = O double bonds are introduced into a polymer chain, and the piezoelectric property of the polymer is remarkably enhanced.

The invention relates to the technical field of microorganisms, in particular to a bacterial strain for producing cholest-5, 7, 24-triene-3beta alcohol and application of the bacterial strain. The invention provides a gene engineering strain for producing cholest-5, 7, 24-triene-3 beta alcohol, an ERG4 gene, an ERG5 gene and an ERG6 gene are knocked out, and the yield of the cholest-5, 7, 24-triene-3 beta alcohol of the strain reaches 360 mg / L and is increased by 300% or above compared with the prior art; in addition, the fermentation time is shortened to 20 hours, and compared with other strains, the fermentation time is saved by 70 hours.

The present invention discloses a method for preparing enol by selective hydrogenation of alkynol. By adding an acidic substance to adjust the pH value of the reaction system and adding crown ether to inhibit the two main side reactions of self-coupling and over-hydrogenation of terminal alkyne, the purpose of improving low selectivity is achieved. The product has a pure odor and mild reaction conditions.

The invention discloses a preparation method of regenerated polyester fibers, and relates to the technical field of polyester fibers. According to the invention, (4-formylphenyl) phosphonic acid and 2-(3-nitroaniline) acethydrazide are combined to form a Schiff base structure, so that an antibacterial effect is realized, and meanwhile, phosphorus is introduced, so that flame-retardant and anti-wear effects are realized; then, a modified wear-resistant agent with a cross-linked network structure is formed with butanediol, so that the wear-resistant effect of the fiber is remarkably enhanced; then 1, 7-octadiene-3-alcohol and octylene trichlorosilane are copolymerized to prepare a modifier, a cross-linked network structure is formed, the wear-resistant effect is enhanced, meanwhile, flame combustion can be inhibited, and the flame-retardant effect is achieved; then, the hydroxylated carbon nanotubes attract a modifier to be subjected to in-situ polymerization on the surfaces of the hydroxylated carbon nanotubes to prepare modified carbon nanotubes, so that the dispersity of the carbon nanotubes is improved, fiber falling is prevented, and the wear resistance of the material is improved; finally, the regenerated polyester fibers, the modified wear-resistant agent and the composite modified carbon nanotubes are mixed, melted and spun, so that the wear-resistant, antibacterial and flame-retardant effects are achieved.

The invention discloses a construction method and application of an ultra-sensitive self-enhanced electrochemical luminescence biosensor, and belongs to the technical fields of biochemical analysis, nano materials and life science. According to the preparation method disclosed by the invention, Cu < 2 + > is introduced into luminous ZrEu-MOF, and a co-reactant K2S2O8 is catalyzed by the Cu < 2 + > to generate more active free radicals, so that ZrEuCu-MOF with a self-enhancement function is prepared; resorcinol-formaldehyde resin with an egg yolk structure is further synthesized as a quenching probe, and effective quenching of a light-emitting signal is realized based on electrochemical luminescence (ECL) resonance energy transfer between the resorcinol-formaldehyde resin and ZrEuCu-MOF, so that the detection sensitivity is improved. The constructed ECL biosensor realizes efficient and sensitive detection of neuron-specific enolase, and has the advantages of low detection limit, wide detection range, good stability and industrial application prospect.

This present disclosure provides various diamine centered PEG-saccharide-lipid conjugates. In various embodiments, the conjugates can safely be used as water solubility or bioavailability enhancers.. In one aspect, the present disclosure provides a PEG-saccharide- lipid conjugate having the structural formula (I) wherein m has a number-average value in the range of 2-10; S is a mono-, di- or trisaccharide group, in which each saccharide unit is a sugar, a sugar alcohol, an amino sugar or a sugar acid; L is -C(O)-R1 in which R1 is an alkanyl or alkenyl group having a number-average number of carbons in the range of 6-22, and / or is a steroid acyl group; P is -(CH2-CH2-O)nR2 in which "n" has a number-average value in the range of 5-50 (e.g., 8-45) and R2 is hydrogen and / or alkanyl and has a number average number of carbons in the range 0-4.

The invention relates to the technical field of detection methods, and discloses a method for determining the content of triterpene alcohol in camellia oil, which comprises the following steps: (1) saponifying and extracting a camellia oil sample, and loading on a machine to be detected; then carrying out silanization derivation treatment, and loading to be detected again; (2) beta-amyrin, butyryl whale alcohol and lupeol are respectively prepared into standard solutions, the standard solutions of the beta-amyrin and the butyryl whale alcohol are directly put on a machine to be detected, and the standard solution of the lupeol is put on the machine to be detected after being subjected to silanization derivation treatment; (3) gas chromatography detection: the temperature rise mode of the column temperature is that the temperature is kept at 180-190 DEG C for 1-5 min, then the temperature is raised to 260-300 DEG C at the rate of 10-15 DEG C / min, and the temperature is kept for 20-40 min; the split ratio is (20-40): 1. According to the method, the triterpene alcohol is measured by adopting a gas chromatography external standard method, and the result is more scientific, advanced, accurate and reliable.

The invention relates to the technical field of high polymer materials, and discloses a high-enthalpy-value non-molten-drop nylon 66 filament and a preparation method thereof. The preparation method of the high-enthalpy-value non-molten-drop nylon 66 filament comprises the following steps: reacting epoxy modified boron nitride with 1-amino-3-butene-2-alcohol to obtain functionalized boron nitride; phase change microcapsules are prepared by taking octadecane as a core material and functionalized boron nitride as a wall material additive; grafting the nylon 66 to obtain grafted modified nylon 66; combining the phase change microcapsules with the grafted nylon 66 to obtain phase change modified nylon 66; the preparation method comprises the following steps: mixing phase change modified nylon 66 and a functional additive, carrying out melt extrusion, carrying out melt spinning, and carrying out water cooling, oiling, hot drafting and air cooling winding to obtain the high-enthalpy-value non-molten-drop nylon 66 filament. The high-enthalpy-value non-molten-drop nylon 66 filament disclosed by the invention is high in enthalpy value and has excellent flame retardance, molten-drop resistance and water resistance.

The invention provides a preparation method of pregnanolone, which comprises the following steps: 1) under the action of a first catalyst, progesterone and anhydride react to obtain a compound as shown in a formula (I); 2) under the action of a dehydrating agent and a second catalyst, diol reacts with the compound shown in the formula (I), and a compound shown in a formula (II) is obtained after deprotection; 3) under the action of a ligand and a third catalyst, selectively reducing the compound as shown in the formula (II) by hydrogen to obtain a compound as shown in a formula (III); and 4) reacting the compound as shown in the formula (III) with a reducing agent, and deprotecting to obtain pregnanolone. According to the present invention, progesterone is adopted as the starting material, enol esterification reaction, ketal protection, ester group hydrolysis, hydrogenation and reduction hydrolysis are performed to obtain pregnanolone, the method has characteristics of mild condition, conventional reagent, simple operation and suitableness for industrialization, the obtained product has characteristics of good quality, purity of more than 99.0%, and total yield of about 90.0%.

The invention relates to a synthesis method of a diunsaturated ester compound catalyzed by N-heterocyclic carbene, and belongs to the field of organic synthesis. According to the preparation method, the synergistic effect of N-heterocyclic carbene and light is utilized, gamma-oxo unsaturated aldehyde and Katritzky salt are taken as starting raw materials, the Katritzky salt generates alpha-ester free radicals through a single electron transfer process under the illumination condition, the free radicals react with a nucleophilic trienol intermediate generated through catalysis of the N-heterocyclic carbene, and the alpha-ester free radicals react with the nucleophilic trienol intermediate to generate the gamma-oxo unsaturated aldehyde. Target products are obtained with good yield and high regioselectivity, so that a series of epsilon-alkylated diunsaturated ester compounds are efficiently synthesized. The method is simple and convenient to operate, green and efficient, has the advantages of no transition metal participation, wide substrate applicability and the like, provides a new way for synthesis of the diunsaturated ester compound, and has a wide application prospect.

The invention discloses a catalyst for synthesizing 3-methyl-3-butene-1-alcohol as well as preparation and application of the catalyst. The preparation method of the catalyst comprises the following steps: (S1) mixing acrylic acid, acrylate, a dispersing agent, a flatting agent and a light curing agent to obtain a photosensitive resin mixed solution; (S2) mixing first powder with the photosensitive resin mixed solution obtained in the step (S1), sequentially adding a suspending agent, a soaking and washing agent and second powder, standing, and then adding an anti-sticking agent and a soaking and washing agent to obtain printing slurry; and (S3) loading the printing slurry obtained in the step (S2) into a liquid carrying device, carrying out 3D printing according to a set program, and carrying out post-treatment to obtain the catalyst with a three-dimensional cuboid grid skeleton structure. The catalyst is high in mechanical strength and long in service life, and is used for the process of generating 3-methyl-3-butene-1-alcohol from isobutene and formaldehyde, and the formaldehyde conversion rate and the 3-methyl-3-butene-1-alcohol selectivity are greatly improved.

The invention provides a 2-succinyl-5-enol acetonyl-6-hydroxy-3-cyclohexene-1-carboxylic acid (SEPHCHC) synthase mutant, which is characterized in that on the basis of a bacillus subtilis SEPHCHC synthase gene MenD, 12 SEPHCHC synthase mutants are obtained by virtue of a site-specific mutagenesis PCR (Polymerase Chain Reaction) technology, and the SEPHCHC synthase gene MenD is used as a base. Recombinant bacteria of bacillus subtilis or bacillus natto or bacillus licheniformis or bacillus amyloliquefaciens for expressing the mutant are respectively constructed, and the yield of heptaene menadione fermented by the recombinant bacteria is 74%-203% of the yield of heptaene menadione fermented by the recombinant bacteria of bacillus subtilis for expressing wild type SEPHCHC synthase MenD.

The invention relates to the technical field of chemical engineering, and discloses a catalyst, a preparation method and application of the catalyst in preparation of isopentenal. According to the catalyst for catalyzing isomerization rearrangement of 2-methyl-3-butyne-2-alcohol to prepare isopentenal, provided by the invention, the lanthanide metal oxide is utilized to modify the supported vanadium catalyst, so that the selectivity of the catalyst can be improved, and the yield of isopentenal is increased. According to the synthesis process of the isopentenal, 2-methyl-3-butene-2-alcohol can be isomerized and rearranged into the isopentenal by adopting a reactive distillation mode without using a toxic solvent, efficient and continuous production of the isopentenal is realized, meanwhile, under the catalytic action of the catalyst, the raw material can be converted into the isopentenal with high selectivity, the yield of the isopentenal is increased, and the yield of the isopentenal is increased. And under proper process conditions, hydrogen ions can be provided in the presence of a proper amount of water, so that the raw materials are promoted to be subjected to isomerization rearrangement reaction quickly, the surface temperature of the catalyst is reduced, and the carbon deposition phenomenon of the catalyst is relieved to a certain extent.

The invention discloses a hyperbranched polyether branching agent with an adjustable structure and a preparation method and application thereof.According to the branching agent, 3-butene-1-alcohol serves as an initiator, a hyperbranched skeleton is constructed through anion ring-opening polymerization reaction and diglycidyl ether, then esterification and end capping are conducted through anhydride, and the hyperbranched polyether branching agent with the adjustable structure is obtained. The tail end of the hyperbranched polyether contains vinyl double bonds, and the ester group structure of the hyperbranched polyether can be regulated and controlled. Different diepoxy compounds are selected to control a main chain structure, and different anhydrides are used for regulating and controlling the chemical composition of branched chains, so that accurate design of molecular weight, polarity and number of functional groups of the branching agent is realized. The branching agent has excellent dissolvability in common organic solvents, and solves the problem of poor dissolvability of the traditional polydiene branching agent. When the star-shaped branched butyl rubber is applied to the synthesis of star-shaped branched butyl rubber, the distribution and number of branched points can be accurately regulated and controlled, the weight-average molecular weight and molecular weight distribution index of the rubber are remarkably improved, and the side reaction of gel is avoided.

The application provides a catalyst for preparing an enol from an alkyne alcohol, a preparation method and a method for preparing the enol by using the catalyst. By precisely controlling the particle size, specific surface area and added toxicant of the Lindlar catalyst, the catalytic efficiency can be significantly improved, and the catalyst performance is quantified with each parameter, so that the catalyst can be widely applied in industrial production.

The invention provides an alkali metal modified catalyst as well as a preparation method and application thereof, alkali metal is used for modifying metal oxide with a spinel structure, the alkali metal affects the oxygen vacancy property in the spinel structure, non-dissociation adsorption of CO is promoted, formation of long-chain alpha-olefin and enhigher alcohol is facilitated, and the catalyst has the advantages of being simple in preparation process and low in cost. The catalyst is high in selectivity of long-chain olefin and high-carbon alcohol, high in CO conversion rate and low in selectivity of by-products (CH4 and the like). The preparation process of the alkali metal catalyst is simple, convenient and efficient, firstly, Prussian blue PB is synthesized, then PB serves as a template agent and reacts with other metal salts to synthesize nanocubic metal oxide MFe2O4, M can be Co, Mn, Zn, Mg and the like, and then dipping modification is conducted through alkaline metal. The alkali metal oxide prepared by the method disclosed by the invention is used as a catalyst, shows relatively excellent enol selectivity and reaction stability in a reaction for synthesizing enol through CO hydrogenation, and has a potential industrial application prospect.

An antifungal composition including a first essential oil, and a second essential oil, where the composition is configured to reduce disease onset, pathogen spread, or a combination thereof. Further, an antifungal compound including one or more aroma compounds selected from 4-(4-hydroxyphenyl)-2-butanone, furaneol, ethyl methylphenylglycidate, ethyl hexanoate, ethyl butanoate, beta-ionone, alpha-ionone, (R)-(+)-limonene, (S)-(-)-limonene, cis-3-Hexen-1-ol, nerol, linalool, 2-heptanone, alpha-terpineol, beta-damascenone, β-caryophyllene, ethyl 2-methylbutanoate, β-myrcene, gamma-octalactone, alpha-humulene, nerolidol, (E,E)-2,4-decadienal, (E,E)-α-farnesene, vanillin, phenylethyl acetate, citral, 3-methylbutan-1-ol, or a combination thereof.

The invention belongs to the field of organic synthesis, and particularly relates to a method for constructing a high-crystallinity covalent organic framework material by melting a nucleophilic catalyst, which comprises the following steps of: mixing a construction monomer and a pyridine-containing nucleophilic catalyst under a solid-phase condition or grinding slurry, directly placing in a reaction container, and reacting for 1-2 hours to obtain a covalent organic framework material with high crystallinity; and raising the temperature to a melting temperature, and polymerizing the monomer to obtain the COFs material. According to the method, the existing synthesis method of a covalent organic framework material with vinyl connection, imide connection, imine bond connection or ketone-enol connection is optimized, reaction monomers are expanded, the material cost is reduced, the use of a high-toxicity catalyst and a solvent is avoided through solvent-free synthesis, the energy consumption is reduced, and the method is suitable for industrial production. The crystallinity and the specific surface area of the covalent organic framework are improved; and the method has excellent universality.

The invention relates to a photosensitive compound suitable for G / I line photoresist. The main structure of the photosensitive compound is composed of a multi-carbonyl enol compound and diazonaphthoquinone sulfonyl. The invention also provides a synthesis method of the photosensitive compound, the diazo naphthoquinone sulfonate type photosensitive compound with excellent performance can be prepared by using the method, and the component proportion of the photosensitive compound can be adjusted at will. The invention also provides an application of the photosensitive compound in photoresist configuration, and the prepared photoresist has good performance.

The invention relates to the technical field of photoresist, in particular to G / I line photoresist suitable for manufacturing liquid crystal display panels and semiconductors. The photoresist is a positive photoresist and comprises phenolic polymer resin, a diazo naphthoquinone type photoinitiator, a solvent and an additive. According to the invention, the multi-carbon-based enol compound is used as a precursor to prepare the diazo naphthoquinone sulfonate type photosensitive compound, and the photosensitive compound is matched with the phenolic polymer resin, the solvent and the additive, so that the prepared photoresist has high resolution, good sensitivity, excellent thermal stability and etching resistance.

The invention discloses a chain dienol carboxylate compound and a preparation method thereof, alkynyl allyl ester is used as a substrate, in the presence of a nucleophilic catalyst, alkynyl allyl ester, a carboxylic acid compound and an active methylene compound are subjected to a biaddition reaction, and a product containing a chain dienol carboxylate structure is obtained with high double bond cis-trans selectivity. The compound with the chain diene carboxylic ester structure is a chain compound with alternating single and double bonds, and has obvious and important application value in the fields of medicinal chemistry, analytical chemistry, synthetic chemistry and the like. The compound containing the chain-like dialkenyl carboxylic ester structure is a dienol ester compound, and has extremely wide and important application value in many fields such as choline active drug development, fluorescence detection and diagnosis molecular research, natural product synthesis and the like; according to the invention, an efficient synthesis means and a series of candidate compounds for further development can be provided for the development of diene alcohol ester functional molecules with high similarity.

According to the method for preparing the methyl heptenone through the Saucy-Marbet reaction of the 2-methyl-3-butene-2-alcohol and the 2-methoxypropene, by controlling the content of the key impurities tert-amyl alcohol and water in the raw materials, the reaction conversion rate can be larger than or equal to 99.5%, and the reaction selectivity can be larger than or equal to 98.5%. The method has the advantages of cheap and easily available catalyst, mild reaction conditions, simple operation and high reaction yield, and solves the problems of more three wastes, complex side reaction, difficult product purification and the like in the prior art.

The invention belongs to the technical field of energy storage materials, and particularly relates to an aqueous ammonium ion battery electrode material based on perylene diimide, a preparation method and application. Firstly, a perylene diimide compound and a preparation method are provided, the material is stable, the material is rich in carbonyl structures, and enol type conversion can be carried out in the charging and discharging process to combine / release ammonium ions to complete charge storage; the invention also provides a water-based battery prepared from the perylene diimide compound and a preparation method, and the water-based battery has reversible specific capacity of 190.62 mAh / g in 1M (NH4) 2SO4 solution and current density of 1A / g, and shows excellent rate capability. After 1000 cycles of continuous charging and discharging in a 1M (NH4) 2SO4 solution and at the current density of 10A / g, the lithium ion battery still has the specific capacity of 101.67 mAh / g, and the lithium ion battery is simple in preparation process, low in cost and wide in market application prospect.

The invention discloses a molecular recovery type SBS modified asphalt regeneration agent and a preparation method thereof, which is prepared from a toughness recovery agent, a rigidity recovery agent, a plasticizer, a reaction auxiliary agent, and a network former; the toughness recovery agent is a mixture of aliphatic cyclic ether and aliphatic enol in a mass ratio of 4:1, the rigidity recovery agent is an aromatic cyclic ether, the plasticizer is activated by biological heavy oil and waste rubber powder in a mass ratio of 5:1, the reaction auxiliary agent is a tertiary amine compound, and the network former is a polyvalent primary amine compound. The regeneration agent of the invention can not only restore the component composition of the aged asphalt, but also balance the rigid-flexible block ratio of the SBS molecule after regeneration through the toughness recovery agent and the rigidity recovery agent, solve the problem of significant decrease in the high temperature performance of the regenerated SBS, and use the network former to fully restore the cross-linked network structure of the SBS, thereby improving the comprehensive road performance of the regenerated SBS modified asphalt. The formula is unique, the performance is excellent, and the application prospect is broad.

The invention relates to a water-soluble ultraviolet absorbent 4-disubstituted aminobenzyl subunit camphorsulfonic acid and a synthesis method and application thereof, and the synthesis method comprises the following steps: in a toluene-methanol mixed solvent, carrying out heating reflux reaction on camphorsulfonic acid and 2 equivalent weight of sodium methoxide, and after enolation conversion is completed, carrying out reduced pressure distillation to obtain the 4-disubstituted aminobenzyl subunit camphorsulfonic acid. Slowly dropwise adding a corresponding 4-disubstituted aminobenzaldehyde solution with the molar weight equal to that of camphorsulfonic acid, continuously heating and stirring to react for 6-12 hours, adding water to terminate the reaction, acidifying the reaction solution by using hydrochloric acid or sulfonic acid type cation exchange resin, separating to remove methylbenzene, adjusting the pH value of a water phase to about 6.5, performing rotary evaporation dehydration under reduced pressure, and extracting a crude product by using a conventional method; a target product can be obtained through column chromatography purification, and the target product not only has water solubility, but also has the characteristic of absorbing UVA and UVB ultraviolet light at the same time; the composition can be applied to sun-screening agent products, cosmetics or home care products, and also can be applied to various industrial products such as paint, varnish, plastics, textiles and rubber to improve the light resistance of the industrial products.

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.