29results about How to "Achieve synthesis" patented technology

The invention discloses a composition with an anti-aging effect and a preparation method and application thereof, and belongs to the technical field of cosmetics. The composition is prepared by compounding a traditional Chinese medicine active component, a moisturizing and permeation promoting component and a repairing and anti-aging auxiliary component, and the traditional Chinese medicine active component is composed of three zymolytes and three fermentation extracts which are respectively prepared from six medicinal and edible traditional Chinese medicine raw materials through differentiated composite enzymolysis and probiotic anaerobic fermentation processes. The problems that traditional Chinese medicine extracts are low in transdermal absorption rate, poor in bioavailability and insufficient in cosmetic system stability are solved, active ingredients are small-molecularized through process optimization, a multi-target synergistic anti-aging system is formed by matching with functional components, the anti-aging and repairing composition has excellent anti-aging and repairing effects, physical and chemical stability and skin safety, and the anti-aging and repairing composition has a good application prospect. The composition is suitable for various skin types and can be widely applied to preparation of anti-aging repair cosmetics.

The present application relates to the technical field of porphyrin-based covalent organic framework material preparation, in particular to a mild preparation method of acetaldehyde-based porphyrin covalent organic framework and application thereof, which comprises the following steps: step one: dispersing ligand 2', 5'-bis((ethyl sulfide) methyl)-[1,1':4',1''-triphenyl]-4,4''-diamine in acetonitrile solution to obtain solution A, and dissolving acetaldehyde-based porphyrin in dichloromethane to obtain solution B; step two: mixing solution A and solution B; step three: adding ferric chloride and acetic acid as catalysts to react under mild conditions to obtain acetaldehyde-based porphyrin covalent organic framework material, which has excellent gaseous iodine adsorption performance. The synthesis method provided by the present application has mild conditions, simplifies the high-temperature time-consuming shortcomings of traditional porphyrin-based covalent organic framework material synthesis, and realizes the synthesis of special ligand covalent organic framework.

This invention discloses a chiral monophosphine ligand, its preparation method, and its application in asymmetric synthesis. The ligand preparation method involves mixing an N,N',1,2-tetrasubstituted ethane-1,2-diamine compound, phosphorus trichloride, triethylamine, and solvent under a nitrogen or argon atmosphere at -80 to -70°C, and reacting at 60 to 80°C for 6 to 8 hours. The resulting reaction mixture is then cooled to room temperature, and an alcohol, phenol, or Grignard reagent is added dropwise, reacting at 60 to 80°C for 8 to 12 hours. The resulting mixture is then post-treated to obtain the chiral monophosphine ligand. The application involves stirring a nickel catalyst, a chiral monophosphine ligand, a solvent, a diene, and an aldehyde under an argon or nitrogen atmosphere at a specified temperature for 12 to 15 hours. The mixture is then post-treated to obtain the target product. This method utilizes widely available and inexpensive raw materials, and the operation is simple, achieving high stereoselectivity and enantioselectivity in the synthesis of alcohol compounds containing chiral conjugated dienes through a one-step reaction.

The invention relates to a method for synthesizing trans-isopentenyl substituted indolone under the catalysis of transition metal nickel. Specifically, a metal nickel catalyst (Ni (cod) 2) and tricyclohexylphosphine (PCy3) are used as ligands, C3 unsubstituted indolone is used as a nucleophilic reagent to react with isoprene, and a trans-isopentenyl substituted indolone product is obtained. And then taking the product as a reaction raw material, and carrying out nucleophilic substitution reaction on the product and halogenated alkane under an alkaline condition to obtain the 3, 3-disubstituted indolone with divergent functional groups. According to the invention, isoprene is used as a reaction precursor, a trans-isopentenyl substituted indolone product is obtained with high activity and selectivity, a nucleophilic substitution reaction is relayed, and a new strategy is provided for flexibly and conveniently introducing functional groups with different steric hindrances and electrical properties.

The invention discloses a method for synthesizing chiral morpholine from propargyl alcohol ester. Chiral morpholine is an important drug molecular skeleton and is widely applied to the aspects of analgesia, anesthesia, tumor resistance, heart treatment and the like as a drug active ingredient, but an efficient synthesis method is lacked. According to the method disclosed by the invention, under the regulation and control of arylboronic acid and a specific chiral ligand, propargyl alcohol ester and an affinity reagent react to obtain optically pure (87-97% ee) morpholine. The method has the characteristics that the catalyst and the ligand are wide in source, and the substrate is cheap and easy to obtain; the chiral morpholine has excellent enantioselectivity and good functional group compatibility, can be suitable for structural modification of bioactive molecules and intermediates, and is a simple and efficient asymmetric catalysis strategy for synthesizing chiral morpholine.

This invention provides a training method and apparatus for a synthesis model of facial mask images. The method includes: acquiring an image of a face without a mask and an image of a mask; training a generator to obtain spatial transformation coefficients for the mask image; deforming the mask image based on the spatial transformation coefficients; fusing the deformed mask image with the image of the face without a mask to obtain a preliminary facial mask image; judging the preliminary facial mask image using a discriminator to obtain a discrimination score W; if the discrimination score W is within a preset threshold range, the network parameters in the generator and discriminator are qualified, and the generator and discriminator are used as the synthesis model for the final facial mask image. The synthesis model in this application can quickly and massively synthesize facial mask images.

This invention discloses a method for the selective synthesis of 4-amino-N-(hetero)arylsulfonamide compounds. Using bipyridine as a ligand and nickel as a catalyst, and inexpensive and readily available low-activity (hetero)aryl chlorides and 4-aminobenzenesulfonamides as substrates, 1,8-diazabicycloundec-7-ene and other organic bases are used, along with sodium iodide and other additives. The synthesis of various 4-amino-N-(hetero)arylsulfonamide compounds is achieved through a photo-driven nickel-catalyzed selective C-N coupling reaction of (hetero)aryl chlorides and 4-aminobenzenesulfonamides under an argon atmosphere. This invention features a simple reaction system, convenient operation, mild reaction conditions, and simple post-processing. It exhibits good selectivity for target compounds and high yields, avoiding the problems of complex catalytic systems and poor functional group compatibility caused by the use of traditional expensive metal catalysts and inorganic bases. Therefore, it has significant application value and market prospects.

This invention provides a method for preparing deuterium-labeled 4-alkylphenol compounds, enabling the synthesis of deuterium-labeled products of various common 4-substituted alkylphenols, such as deuterium-labeled nonylphenol and deuterium-labeled octylphenol. The method is novel, and all deuterium-labeled intermediates involved in the design are new compounds. This method successfully achieves directional deuteration substitution of hydrogen atoms on saturated carbon chains through D-H exchange (deuterium hydrogen exchange) and deuteration reduction. By adjusting the synthesis strategy, such as selectively using deuterium-labeled reducing agents or ordinary reducing agents, and selectively executing the D-H exchange step, target products with different labeling units, such as D4, D6, and D8, can be selectively obtained. The products can be used not only for the quantitative detection of the main alkylphenol component but also for the quantitative detection of its metabolic fragments.

The invention relates to the technical field of rail traffic testing, and discloses a train aerodynamic force and wheel-rail force distributed measuring device and method.The device comprises multiple sets of rail roadbed modules detachably arranged on the ground of a wind tunnel test section in sequence, and the rail roadbed modules comprise multiple sets of roadbeds connected in sequence; each group of subgrade is provided with a first track matched with a train model, and at least one group of subgrade of each group of track subgrade module is provided with a mounting groove; the sensor module comprises a sensor mounting seat and a sensor, the sensor mounting seat is detachably arranged in the mounting groove, and a second track matched with the train model is arranged on the sensor mounting seat; wheels of the train model are fixedly connected with the second track. According to the invention, a specific distributed sensor arrangement scheme is adopted to be integrated with a modularized track roadbed module, and a special system calibration and data processing method is combined, so that the accurate distributed measurement and synthesis of the train load are realized.

This invention relates to a recombinant bacterial cell for de novo synthesis of xanthocyanin WGX-50 using glucose as a carbon source, its construction method, and its applications. The recombinant bacterial cell uses *Escherichia coli* as the host strain and integrates the following three heterologous biosynthetic modules: a 3,4-dimethoxyphenylethylamine de novo synthesis module, which contains an enzyme system catalyzing the generation of dopamine from L-tyrosine and further stepwise methylation of dopamine to 3,4-dimethoxyphenylethylamine; a cinnamoyl-CoA synthesis module, which contains an enzyme system catalyzing the generation of cinnamoyl-CoA from phenylalanine or glucose metabolic intermediates; and an amidation module, which contains an acyltransferase capable of catalyzing the condensation of 3,4-dimethoxyphenylethylamine and cinnamoyl-CoA to generate xanthocyanin WGX-50. This invention achieves, for the first time, the de novo biosynthesis of xanthocyanin in microorganisms, completely eliminating dependence on the expensive exogenous precursor 3,4-dimethoxyphenylethylamine and significantly reducing raw material costs.

This invention discloses a genetically engineered strain of *Saccharomyces cerevisiae* and its application in cholesterol synthesis. The strain was obtained through multiple genetic engineering steps, starting with *Saccharomyces cerevisiae* SquP1: DHCR24 gene was integrated at the YPL062W site to achieve 7-dehydrocholesterol synthesis; the ERG6 promoter was replaced with the ERG7 promoter and the DWF5 gene was integrated to achieve cholesterol synthesis; the TGL3, TGL4, and ROX1 genes were knocked out to enhance cholesterol accumulation; the FLX1 and ZWF1 genes were integrated to strengthen cofactor supply; the HXK1 promoter was replaced and the ERG11 gene was integrated to optimize the synthesis pathway; and auxotrophic genes were reintroduced to obtain the CC37N strain. This strain achieved a maximum yield of 6.23 g / L in a 5L bioreactor fermentation, providing an excellent strain for efficient cholesterol biosynthesis.

This invention discloses a method for heterologous production of 7-aminodeacetoxycephalosporanic acid using *Aspergillus nidulans*. This invention targets a *Aspergillus nidulans* strain that heterologously produces 7-aminodeacetoxycephalosporanic acid. Genes derived from the biosynthetic gene clusters pcbAB / C, isopentine N-acetyltransferase gene, and cefE gene, or their mutants, are assembled into a *Aspergillus nidulans* expression vector. Co-expression is performed in a *Aspergillus nidulans* basal cell strain to obtain a recombinant strain, successfully achieving heterologous expression of 7-aminodeacetoxycephalosporanic acid in filamentous fungi. Experiments show that the yield can reach 0.13 g / L at the shake-flask level. The strain constructed in this invention provides a good heterologous expression system for studying the synthesis and regulatory mechanism of 7-aminodeacetoxycephalosporanic acid.

The application relates to a preparation method of a lithium battery diaphragm and belongs to the technical field of lithium battery preparation. The method is as follows: epoxy resin, a diluent, a curing agent 1 and an oleophilic emulsifier are uniformly mixed to obtain dispersion liquid 1; an electrolyte solution is constantly dropped into the dispersion liquid 1, constant-temperature high-speed stirring is carried out, and a water-in-oil emulsion is obtained; under constant temperature, deionized water, a hydrophilic emulsifier and a curing agent 2 are uniformly mixed to obtain dispersion liquid 2; the water-in-oil emulsion is added into the dispersion liquid 2, high-speed emulsification is carried out, and a water-in-oil-in-water emulsion system is obtained; the water-in-oil-in-water emulsion system is subjected to temperature rising and curing; after curing, centrifugal separation, washing and drying are carried out, and a solid nanometer adhesive is obtained; the solid nanometer adhesive is ground, then is uniformly coated in a mold and is subjected to high-temperature treatment, and the lithium battery diaphragm is obtained. The electrolyte solution is selected as the inner water phase of the water-in-oil emulsion, the internal osmotic pressure of the emulsion can be increased, fusion between the emulsions can be prevented, and the particle size is increased.

The invention discloses a regionally structured polymer chain with asymmetric monomers as elements on a solid surface and a synthetic method thereof, and the synthetic method comprises the following steps: taking a metal substrate, cleaning the metal substrate, placing the cleaned metal substrate in an ultrahigh vacuum environment, preheating the metal substrate to a temperature of 300-580K, and maintaining the temperature for a period of time; the asymmetric monomer is deposited on the preheated metal substrate, the deposition distance, time and temperature are controlled, heating is stopped immediately after deposition is completed, and cooling is conducted; and rapidly cooling the substrate to a liquid nitrogen temperature to obtain the regional regular polymer chain. The synthesis method is simple, synthesis of an asymmetric polymer chain with a regular region is realized only by depositing asymmetric molecules on a solid surface and regulating and controlling deposition conditions and surface temperature, an asymmetric covalent polymer chain with high coverage is obtained, a covalent product is clear in structure, a connection structure of each molecule can be distinguished, and the method is suitable for industrial production. The method has wide application in the aspects of single-molecule research, regulation and control of preparation of complex polymers and the like.

The application provides a chiral carbene ligand, a preparation method thereof and application in asymmetric synthesis, the chiral carbene ligand catalyzes asymmetric hydroarylation reaction of various kinds of olefin substrates such as aryl olefin, alpha-olefin and diene, and aryl bromine or aryl chloride, and synthesizes four kinds of drug molecules or drug molecule intermediates in one step. The chiral carbene ligand has a flexible chain structure, is self-adapting, can effectively adapt to different transition metal centers and substrate configurations, and improves the universality and selectivity of the catalytic system; the raw material used in the preparation method of the chiral carbene ligand is easy to obtain, the synthesis route is short, and post-treatment is simple; various reagents can exist stably at normal temperature and pressure without special treatment; only by regulating the nickel catalyst and the new chiral carbene ligand, high regioselectivity and enantioselectivity of the chiral benzyl-containing compound can be realized; the asymmetric synthesis method can obtain the target product in one step, and greatly reduces the production cost of synthesizing the compound.

The invention discloses a synthesis method of (Z) type conjugated enol phosphate, which comprises the following steps: (1) synthesis of enol phosphate: reacting 4-chloroacetoacetate with phosphite ester, ending LC-MS (liquid chromatography-mass spectrometry) detection, and separating and purifying the product to obtain enol phosphate; and (2) synthesis of (Z) type conjugated enol phosphate: mixing enol phosphate, triethylamine and acetonitrile, stirring at room temperature for reaction, ending LC-MS detection, and separating and purifying the product to obtain the (Z) type conjugated enol phosphate. The method has the advantages of milder reaction conditions, higher efficiency, higher yield and better selectivity.

This invention belongs to the field of nanomaterials and catalytic chemistry, and discloses a chiral high-entropy ceramic electrocatalyst prepared based on a ligand-controlled collapse mechanism. In the synthesis of this catalyst, multiple transition metals are first introduced into a zeolite imidazole ester (ZIF) precursor to construct high-entropy nodes, and then grafted with sterically hindered chiral functional organic ligands exhibiting thermal retardation effects. Through a unique kinetic retardation effect, the metal aggregation rate is slowed down during pyrolysis, allowing the carbon-nitrogen framework to complete directional helical assembly before metal melting, ultimately forming a ceramic structure with atomically high-entropy active sites and macroscopic chiral channels. The catalyst prepared by this invention exhibits high specific surface area and enantioselectivity, making it particularly suitable for the in-situ synthesis of chiral intermediates under extreme aerospace environments.

This invention belongs to the field of drug synthesis and relates to a highly efficient hydrogen-borrowing reaction strategy for the preparation of ferroquinone (FQ). This strategy uses commercially available ferrocene as a starting material, constructs the key precursor ferrocene diol through two-step conversion, and then proceeds through two hydrogen-borrowing reactions, successfully inventing a highly efficient method for the preparation of FQ in four steps with an overall yield of 69%. Compared with previously reported routes, this method shortens the reaction steps, increases the reaction yield (the overall yield of the existing ferroquinone synthesis route in the background art is 39%), is simpler to operate, and is environmentally friendly (the only byproduct in the hydrogen-borrowing reaction is water). It can be widely used, laying a solid foundation for in-depth pharmacological and physiological activity research of FQ, and providing a novel and universal strategy for developing new scaffolds for candidate drug molecules with high activity and high selectivity of FQ derivatives.

The application relates to the field of nanomaterial synthesis, and provides a high-entropy alloy and a preparation method thereof, steps of which are preferably as follows: a) precursor synthesis: ascorbic acid is used as a reducing agent to realize reduction of chloroauric acid, Au nanoparticles are obtained, and the Au nanoparticles are cleaned and dispersed in water to form Au colloid; b) high-entropy alloy synthesis: four or more metal salts with certain concentrations are respectively added into the Au colloid in step a), the solution is ultrasonically dispersed to be uniformly mixed, and then laser irradiation is carried out to obtain a high-entropy alloy; c) sample treatment: the sample prepared in step b) is centrifugally separated, cleaned with water and ethanol, and dried to obtain the high-entropy alloy. The method provides a scheme for effectively preparing the high-entropy alloy, overcomes the problem that phase separation is prone to occurring in a traditional method and it is difficult to obtain the high-entropy alloy, and has the advantages of simple process and short time consumption, and is suitable for scale expansion to industrial production.

The invention provides a method for constructing a salidroside efficient biosynthesis engineering strain with enhanced glycosyl donor and cofactor supply and application of the salidroside efficient biosynthesis engineering strain. The method comprises the following steps: firstly, integrating genes of phenylpyruvate decarboxylase (ARO10) and ethanol dehydrogenase (Adh1) which are derived from yeast in a host, then integrating genes of 3-deoxy-7-phosphoenanthate synthase (aroG), 3-phosphoshikimic esterate-1-carboxyl vinyl transferase (AroB), shikimic acid kinase (AroD) and pre-benzoate dehydrogenase (tyrA), and knocking out tyrosine transaminase (TyrB) and phenylacetaldehyde dehydrogenase (feaB); constructing a high-yield strain of key precursor tyrosol in a salidroside production way; secondly, a gene for coding glucosyltransferase (UGT85A1) is integrated in a host, and a genetic engineering strain capable of stably inheriting and producing salidroside is constructed; and finally, integrating a gene for coding nucleoside diphosphate kinase (Ndk) and knocking out a lactic dehydrogenase (ldhA) gene to construct a genetic engineering strain with enhanced UDP-Glc and NADH supply, thereby getting rid of the unstable influence on the production of the engineering strain caused by the application of plasmids and reducing the cost.

The application provides a preparation method of 4-trifluoromethylaniline, comprising the following steps: introducing ammonia into a raw material system comprising 4-chlorobenzotrifluoride, formaldehyde and a dehydrating agent to perform a first reaction; after the 4-chlorobenzotrifluoride is completely converted, the introduction of ammonia is stopped, and a dilute acid solution is added to the reaction system to perform a second reaction, thereby obtaining 4-trifluoromethylaniline. The preparation method of 4-trifluoromethylaniline provided by the application does not need to use expensive copper salt catalysts and trifluoromethylation reagents, and 4-trifluoromethylaniline can be prepared in a high yield by one-pot method with low-cost 4-trifluoromethylaniline as a raw material, thereby greatly reducing the preparation cost.

This invention discloses a universal method for preparing two-dimensional metal nanosheets via an in-situ electrochemical reduction process: first, metal tellurides or metal selenides are subjected to freeze-sonic liquid-phase exfoliation to obtain two-dimensional metal telluride nanosheets or two-dimensional metal selenide nanosheets; then, the two-dimensional metal telluride nanosheets or two-dimensional metal selenide nanosheets are reduced in an H-type electrolytic cell system to obtain the two-dimensional metal nanosheets. The preparation method of this invention is simple to operate, requires no complex equipment, and operates under mild conditions. The prepared two-dimensional metal nanosheets have broad prospects for applications such as the electrochemical C-N coupling synthesis of urea.

The application discloses a composition with anti-aging efficacy and a preparation method and application thereof, and belongs to the technical field of cosmetics. The composition is compounded by a traditional Chinese medicine active component, a moisturizing and penetration promoting component and a repair and anti-aging auxiliary component, wherein the traditional Chinese medicine active component is composed of three kinds of enzymolysis products and three kinds of fermentation extracts prepared respectively by differential complex enzymolysis and probiotic anaerobic fermentation process of six kinds of medicinal and edible traditional Chinese medicine raw materials. The application solves the pain points of low transdermal absorption rate, poor bioavailability and insufficient stability of the traditional Chinese medicine extract in the cosmetic system, realizes the small molecule of the active ingredient through process optimization, forms a multi-target point synergistic anti-aging system by matching the functional components, has excellent anti-aging repair efficacy, physical and chemical stability and skin safety, is suitable for various skin qualities, and can be widely applied to the preparation of anti-aging and repair cosmetics.

The method for synthesizing a benz [c, g] carbazole compound through gold-light synergistic catalysis belongs to the technical field of organic gold catalysis and photocatalysis, and comprises the following steps: gold catalyst and Lewis acid catalyst are added into a mixed toluene solution of a nitrogen methyl pyrrole and a diphenylacetylene compound; the obtained reaction liquid is reacted at 60 DEG C for 10 hours; after the reaction is completed, the obtained product is separated and purified, dissolved in cyclohexane, and I2 is added into the obtained solution under the irradiation of an ultraviolet lamp; the obtained solution is stirred at room temperature for 6 hours; after the reaction is completed, the benz [c, g] carbazole compound is separated and purified. The synthesis and characterization of a bis-benz [c, g] carbazole compound and a bis-olefin precursor are realized for the first time, the reaction condition is simple, the adaptability of the substrate is relatively wide, and the method is a very excellent synthesis strategy.

The invention provides a power synthesis method, a power synthesis device and radio frequency power supply equipment, the power synthesis method is applied to the power synthesis device, the power synthesis device comprises a power amplifier gating module and an impedance module, and the power amplifier gating module is used for selectively connecting or disconnecting a connection path between each radio frequency power amplifier device and the impedance module. The power synthesis method comprises the following steps: controlling connection paths between the at least two radio frequency power amplification devices and the impedance module to be conducted, so that at least two paths of radio frequency electric energy respectively output by the at least two radio frequency power amplification devices correspondingly passing through the power amplification gating module are mixed in the power amplification gating module to obtain synthesized radio frequency electric energy. And determining a target impedance value of the impedance module according to the power value of the radio frequency electric energy correspondingly passing through the power amplifier gating module. And the impedance value of the impedance module is controlled and adjusted to be a target impedance value, so that the synthesized radio frequency electric energy is output through the impedance module with the target impedance value. According to the invention, rapid power synthesis of radio frequency electric energy can be realized.

Embodiments of the present application provide a method for NPU-based streaming speech synthesis vocoder and related products. The method includes obtaining input features to be processed for the streaming speech, wherein the input features to be processed are of fixed length; processing the input features of fixed length based on a vocoder model deployed on the NPU to output audio information; and determining a synthesis result for the streaming speech based on the audio information. By deploying the vocoder model on the NPU to perform synthesis of the streaming speech, the high performance of the NPU (especially the advantages in neural network inference, etc.) is combined to ensure high-quality speech synthesis while effectively reducing latency and real-time rate to meet actual market demand. In addition, the present application also provides a device and a computer-readable storage medium.

The invention relates to a deuterated difluoromethyl compound as well as a preparation method and application thereof, and belongs to the technical fields of organic synthetic chemistry, medicinal chemistry and organic fluorine chemistry. The structural formula of the deuterated difluoromethyl compound is shown as a formula I. Compared with the prior art, a deuterium source and other reagents are cheap and easy to obtain, no transition metal is used, and the deuterated difluoromethyl compound is suitable for synthesizing drugs sensitive to heavy metal residues; the whole preparation process of the deuterated difluoromethyl compound is simple in step, easy to operate, high in product yield and high in deuteration rate; the deuterated difluoromethyl compound provided by the invention is wide in functional group application range in synthesis of other deuterated difluoromethylation reactions, is suitable for later modification of drugs, and is beneficial to grafting to modification of existing drugs. The preparation process of the deuterated difluoromethyl compound is simple and economical, the structure is stable, the reaction activity is high, and deuterated difluoromethylation reaction of different types of compounds can be realized.

The invention relates to artificial board processing, in particular to a preparation method of an indoor anti-corrosion ecological board. The preparation method comprises the following steps: step a, adding toluene diisocynate, polyether polyol and dimethylolpropionic acid, heating in a water bath, and stirring; step b, reducing the water bath temperature, adding triethylamine, and stirring to generate a prepolymer; step c, further reducing the temperature of the water bath, adding deionized water and tebuconazole in the stirring process, adding ethylenediamine after the prepolymer is completely dispersed in the water, and stirring for a time period; step d, coating the prepared waterborne polyurethane on the veneers, and assembling the veneers after gluing; e, cold pressing is conducted, specifically, the combined plate blanks are subjected to cold pressing; and f, hot pressing is conducted, specifically, the plate blank obtained after cold pressing forming is subjected to hot pressing. Waterborne polyurethane synthesis and tebuconazole corrosion prevention modification are integrated, segmented temperature control and segmented forming are coordinated, and unification of the three properties of indoor ecological board cementing, corrosion prevention and environmental protection is achieved.

The application discloses a method for preparing difluoromethyl compounds by using a photocatalytic LMCT strategy and belongs to the technical field of catalytic synthesis, in particular to a method for preparing difluoromethyl compounds by using a photocatalytic LMCT strategy. The application solves the problems of the existing synthesis method, such as being too complicated, needing pre-activation and a stoichiometric oxidant. The method comprises the following steps: adding olefin compounds, difluoroacetic acid, 2,4,6-triisopropylbenzenethiol and Fe(acac)3 into a solvent to obtain a reaction mixed solution, irradiating the reaction mixed solution by using an LED light source under room temperature and in an inert gas atmosphere, and obtaining difluoromethyl compounds. The application embodies the green reaction and the mild reaction. The method is very simple to operate, various raw materials are commercially available, olefins are easy to prepare, and the reaction can be efficiently realized by using a catalytic amount of a cheap metal catalyst through a one-pot method, so that the method has potential industrial application value. The application can be applied to the field of organic synthesis.