101 results about "Phenyl Ethers" patented technology

The invention discloses an unsaturated phenyl ether monomer, a holographic recording medium, a preparation method and a related device, the structural general formula of the monomer is as shown in G1 and G2, R1 represents any one of R2, A1 and A2 independently represent any one of hydrogen and phenyl, A3 represents hydrogen or methyl, A4 represents C1-C4 alkyl or phenyl, n is a positive integer and n = 1-5. The unsaturated phenyl ether monomer provided by the invention has high refractive index and is in a liquid state, and the holographic recording medium with high sensitivity, high diffraction efficiency and high refractive index modulation degree can be obtained by applying the unsaturated phenyl ether monomer to preparation of the photopolymer type holographic recording medium.

The application discloses an influenza virus extraction diluent and application thereof, and the diluent comprises Na2HPO4*12H2O, NaH2PO4*2H2O, NaCl, Proclin 300, ethylenediaminetetraacetic acid disodium salt dihydrate, polyoxyethylene-8-octylphenyl ether and alkylphenol polyoxyethylene ether. The polyoxyethylene-8-octylphenyl ether and the alkylphenol polyoxyethylene ether added in the diluent improve the virus extraction capacity, enhance the stability of the product, save the cost and time, provide a reference value for other products, prolong the product service life for customers, reduce the limitation, are more suitable for the temperature, and have greater market value.

The invention discloses high-wettability reactive nano-silver ink for flexible electronics and a preparation method and application thereof.The preparation method comprises the following steps that S1, silver citrate is weighed and placed in a container, ammonia water is added, and a mixture A is obtained; s2, adding a citric acid solution and organic alcohol into the mixture A to obtain a mixture B; s3, adding ascorbic acid into the mixture B, performing ultrasonic treatment, and filtering to obtain filtrate which is a mixture C; and S4, a surfactant is added into the mixture C, the surfactant is one or more than two of a polyoxyethylene acid ester surfactant, a polyether modified siloxane surfactant and a phenyl ether surfactant, and the ink is obtained after ultrasonic filtration. The prepared ink has excellent stability, can realize low-level rapid sintering, and shows excellent wettability on a silicon substrate.

The invention provides a self-assembled surfactant as well as preparation and application thereof. The preparation method comprises the following steps: adding an anionic surfactant and a nonionic surfactant into a buffer solution, uniformly mixing, and heating until the anionic surfactant and the nonionic surfactant are completely molten, so as to obtain the self-assembled surfactant. Wherein the anionic surfactant is one or more of lignosulfonate, secondary alkyl sulfonate and alpha-olefin sulfonate; the nonionic surfactant is one or more of polyethylene glycol, fatty alcohol-polyoxyethylene ether, polyoxyethylene alkyl ether and polyoxyethylene nonyl phenyl ether. The specific anionic surfactant and the nonionic surfactant are compounded, self-assembly is completed through heating, and the obtained self-assembly surfactant can remarkably improve the enzymolysis efficiency of lignocellulose.

The invention belongs to the technical field of polyimide materials, and particularly relates to an interpenetrating network type polyimide material as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out first polycondensation on pyromellitic dianhydride and 4, 4 '-diaminodiphenyl ether to obtain first polyamide acid; performing first cross-linking on the first polyamide acid under the action of a first cross-linking agent to obtain a first cross-linked network; carrying out second polycondensation on the amino-terminated poly (dimethyl siloxane) and 4, 4 '-(hexafluoroisopropenyl) diphthalic anhydride to obtain second polyamide acid; mixing the first polyamic acid and the second polyamic acid for pre-reaction, and then adding a second cross-linking agent for second cross-linking to obtain a precursor solution; and carrying out imidization on the precursor solution to obtain the interpenetrating network type polyimide material. The interpenetrating network type polyimide material obtained by the preparation method provided by the invention realizes synergistic enhancement of strength and toughness.

The invention discloses a self-repairing mute tire and a preparation method thereof, and relates to the technical field of tires, the self-repairing mute tire comprises a tire body, and a self-repairing rubber layer and a mute material which are sequentially attached to the inner wall of the tire body from inside to outside; the self-repairing adhesive layer is prepared from the following components: epichlorohydrin rubber, acrylate rubber, a rosinyl phenyl phosphine oxide isoxazolyl functional polymer, 4, 4-chloroformyl phenyl ether, a catalyst, 2, 2-bis [4-(4-aminophenoxy) phenyl]-1, 1, 1, 3, 3, 3-hexafluoropropane, trithiocyanuric acid, a filler, an accelerant TMTD (Tetramethylthiuram Disulfide) and an auxiliary agent; the rosinyl phenyl phosphine oxide isoxazolyl functional polymer comprises structural units introduced through a condensation polymerization reaction of the following monomers: glycerol triabietate, bis (4-carboxyl phenyl) phenyl phosphine oxide and 3, 5-isoxazoledicarboxylic acid. The tire is remarkable in self-repairing effect, good in mute performance, sufficient in performance stability and long in service life.

The invention discloses a preparation method of phloroglucinol triglycidyl ether, which comprises the following steps: (1) under the action of a catalyst and at the temperature of 100-130 DEG C, performing ring-opening reaction on phloroglucinol and epoxy chloropropane to generate tris (3-chloro-2-hydroxy propyl) phenyl ether; (2) adding water accounting for 1% of the total amount of reactants at 30-80 DEG C, adding alkali metal hydroxides in batches, and carrying out dehydrochlorination reaction; (3) dissolving the crude product obtained in the step (2) in a water-insoluble solvent, and washing with a low-concentration alkali metal hydroxide aqueous solution at 30-100 DEG C; and (4) washing with a low-concentration sodium dihydrogen phosphate solution, and carrying out reduced pressure distillation on a solvent layer to remove the solvent, thereby obtaining the phloroglucinol triglycidyl ether. By adopting the mode, the phenol type glycidyl ether with close to three functionality degrees can be synthesized.

The invention relates to the technical field of chromatographic packing, in particular to phosphine-containing ligand modified silica gel chromatographic packing and a preparation method thereof.The preparation method comprises the steps that firstly, porous silsesquioxane microspheres containing diphenylphosphine ligands are designed and synthesized to serve as a functional unit, and modified bridged silane containing a phenyl ether structure serves as an alkali-resisting enhancing unit; then copolycondensation is carried out on the units and tetraethoxysilane through a sol-gel method, an organic-inorganic hybrid silica gel skeleton is constructed, and finally the pore channel structure of the filler is optimized through a two-step pore expanding technology. According to the method, a phosphine ligand is firmly embedded into a silica gel skeleton in a covalent bond form, and modified bridged silane containing a phenyl ether structure is used as a part of the skeleton to provide hydrophobic protection and space stabilization effects, so that long-term stability of the filler in a strong alkaline environment and high-capacity and high-selectivity adsorption of metal ions are synergistically realized.

The invention belongs to the field of organic synthesis, and particularly relates to a synthesis method of a 3-phenoxy substituted benzofuran compound. In an inert gas environment, a 2-fluorobenzyl phenyl ether compound as shown in a formula 1 and a methyl benzoate compound as shown in a formula 2 are mixed with an organic solvent tetrahydrofuran to react in the presence of bis (trimethylsilyl) caesium amino, and the 3-phenoxy substituted benzofuran compound as shown in a formula 3 is synthesized under a heating condition. According to the method, the raw materials which are easy to obtain are used, benzofuran is synthesized through a transition-metal-free method, and the method has potential application value in synthesis of active pharmaceutical ingredients.

The invention relates to the technical field of sol agents, in particular to a hot melt adhesive scavenger. The hot melt adhesive scavenger is specifically prepared from the following components in parts by weight: 10 to 15 parts of dodecylbenzene sulfonic acid, 15 to 20 parts of N-methyl pyrrolidone, 5 to 10 parts of dimethyl sulfoxide, 5 to 10 parts of crosslinked polystyrene resin, 10 to 20 parts of cyclohexanone, 15 to 20 parts of propylene glycol phenyl ether, 2 to 5 parts of modified fumed silica and 0.5 to 1 part of benzotriazole. Through the synergistic effect of the organic acid and the polar solvent, the internal structural force of the adhesive and the adhesive force with a screen are destroyed, and meanwhile, the hot melt adhesive scavenger with good cleaning efficiency and stability is obtained by compounding various components.

A polymer comprising pyridinium salt moieties, wherein the polymer has the following structure: In this structure, R1 and R6 are each N. At least a portion of R2 and R7 groups in the polymer are each negatively charged counterions selected from the group consisting of carboxylates, nitrates, nitrites, azides, metasilicates, tetraborate, perborates, boronates, oxalatob orates, metaborates, phosphorus-containing anions, halides, sulfates, SO4 -2, HSO4 -1, thiosulfate, dithionite, metabisulfite, persulfate, methanesulfonate, dioctyl sulfosuccinate, 3-sulfopropyl ethoxylate laurylphenyl ether, and combinations thereof. R3, R4, R8, R9, R11, R13, R14, R15, and R16 are each selected from the group consisting of H and groups including one or more carbon atoms. R5 and R10 are any group including one or more carbon atoms. The n is an integer from 2 to about 100,000.

The application provides a dyeing solution and a dyeing method for para-aramid. The dyeing solution comprises polyester paste, ethylene glycol phenyl ether, dye mother liquor, pH regulator and solvent. The dyeing solution is most favorable for dyeing under the synergistic effect of ethylene glycol phenyl ether, polyester paste powder and sodium carbonate, and the dyeing effect gradually improves with the increase of the ratio of the three. The dyeing method specifically comprises the following steps: soaking para-aramid fibers in water, adding polyester paste and pH regulator, then performing temperature raising and holding treatment, then adding ethylene glycol phenyl ether for treatment, and finally adding dye mother liquor for dyeing. The method can efficiently utilize the carrier, reduce the carrier dosage, and ensure the fiber dyeing effect. After the dyeing depth is improved, the excellent sunlight resistance of the vat dye is utilized.

The application relates to the technical field of anticorrosive paint and discloses long-acting aging-resistant acrylic anticorrosive paint and a production process thereof, wherein the long-acting aging-resistant acrylic anticorrosive paint comprises the following components by weight: 40-50 parts of acrylic emulsion, 4-8 parts of polyester resin, 4-8 parts of amino resin, 3-4 parts of film-forming aid, 20-25 parts of modified talcum powder, 10-12 parts of solvent and 4-5 parts of auxiliary agent; the modified talcum powder is obtained by modifying talcum powder with a modifier, wherein the modifier comprises 2-[(2-methoxy-4-nitrophenyl)amino]ethanol and / or hydroxybutyryl amide phenyl ether. The above technical scheme solves the problem of poor anticorrosive performance of the acrylic anticorrosive paint in the prior art.

The invention discloses a temperature-resistant polyurethane thermal insulation material and a preparation method thereof. The temperature-resistant polyurethane thermal insulation material is prepared from the following raw materials: polymerized MDI, phenyl ether type polyether polyol, bifunctional polyether, a foaming agent HFO-1336mzZ, cyclopentane, an organic silicon-fluorocarbon stabilizer, a catalyst, a phosphorus-nitrogen composite flame retardant, nano silicon dioxide and a hindered phenol antioxidant. The temperature resistance of the thermal insulation material is improved to 130 DEG C from the current 105 DEG C, and the retention rate of high-temperature compression resistance is greater than or equal to 60%; the compressive strength of the foam is improved to be greater than or equal to 0.3 MPa from the current 0.2 MPa; long-term aging test and residue detection are passed, the stability of foam at 130 DEG C is confirmed, and the problems of low mechanical strength and low temperature resistance level in the current polyurethane thermal insulation material industry are effectively solved.

A polymer comprising pyridinium salt moieties, wherein the polymer has the following structure: In this structure, R1 and R6 are each N. At least a portion of R2 and R7 groups in the polymer are each negatively charged counterions selected from the group consisting of carboxylates, nitrates, nitrites, azides, metasilicates, tetraborate, perborates, boronates, oxalatob orates, metaborates, phosphorus-containing anions, halides, sulfates, SO4 -2, HSO4 -1, thiosulfate, dithionite, metabisulfite, persulfate, methanesulfonate, dioctyl sulfosuccinate, 3-sulfopropyl ethoxylate laurylphenyl ether, and combinations thereof. R3, R4, R8, R9, R11, R13, R14, R15, and R16 are each selected from the group consisting of H and groups including one or more carbon atoms. R5 and R10 are any group including one or more carbon atoms. The n is an integer from 2 to about 100,000.

This invention relates to the field of building materials technology, and particularly to a viscosity-reducing polycarboxylate superplasticizer and its preparation method. The viscosity-reducing polycarboxylate superplasticizer uses polyethylene glycol dicyclopentenyl ether methacrylate as the macromonomer, combined with 2-methacryloyloxyethyl phosphocholine, 4-vinylphenylboronic acid, and polyethylene glycol phenyl ether methacrylate as small monomers, prepared via free radical polymerization. Finally, it undergoes freeze-drying and grinding to obtain the target powder product. When the prepared superplasticizer is added to concrete mixtures, it swells and unfolds into a comb-shaped polymer under mechanical stirring and alkaline conditions. Through PEG long side-chain lubrication and steric hindrance, the regulation of surface tension / interfacial energy by phosphocholine groups, and the selective adsorption of borate groups, the initial viscosity is significantly reduced, the viscosity increase over time is controlled, and segregation and bleeding are effectively suppressed, making it suitable for various cementitious systems.

The application discloses a near-infrared distinguishing and iron-apoptosis-enhancing functional fluorescent probe and a preparation method and application thereof. The structural formula of the near-infrared distinguishing and iron-apoptosis-enhancing functional fluorescent probe is as follows: firstly, the traditional boronic acid ether trigger unit is improved to be a cyclic diboronic acid ester, N-methyl imidodicarboxylic acid is introduced above the phenylboronic acid to improve the response threshold, and the benzyl ether structure is abandoned and replaced by a phenyl ether structure, which also plays a role in further increasing the oxidation threshold; secondly, the response threshold is adjusted, and in combination with the strong coordination function of the released Fe(III), the cancer environment selectively triggers and releases the functional probe for iron-apoptosis enhancement. The probe disclosed by the application increases the difference in the reaction threshold between the cancer cell environment and the normal cell environment, and through twice adjustment, the fluorescence trigger difference is increased, the iron-apoptosis intermediate is released at the same time of fluorescence triggering, the cancer cells are caused to undergo iron-apoptosis, and the probe is applied to the detection of tumor cells.

The present application relates to the technical field of chromatographic packing, in particular to a kind of phosphine ligand modified silica gel chromatographic packing and preparation method thereof, the present application first designs and synthesizes the porous silsesquioxane microspheres containing diphenyl phosphine ligand as functional unit, and the modified bridged silane containing phenyl ether structure as alkali-resistant reinforcing unit, then by sol-gel method, the above unit is copolymerized with tetraethyl orthosilicate, constructs organic-inorganic hybrid silica gel skeleton, finally, the pore structure of packing is optimized by two-step hole expansion process;The method makes phosphine ligand firmly embedded in the interior of silica gel skeleton in the form of covalent bond, and the modified bridged silane containing phenyl ether structure provides hydrophobic protection and space stabilization effect as part of the skeleton, so as to realize the long-term stability of packing in strong alkaline environment and high capacity, high selectivity adsorption of metal ions.

The invention relates to the technical field of functional resin, and particularly discloses an acrylic resin coated organic silicon elastomer PA (at) SE prepared through aqueous phase suspension emulsion polymerization and a preparation method and application of the acrylic resin coated organic silicon elastomer PA (at) SE. An inner core of the PA (at) SE is a polyorganosiloxane elastomer ViSE formed by hydrosilylation addition reaction of hydrogen-containing polysiloxane, ethylene polysiloxane and a third functional component, and the third functional component comprises vinyl acetate, allyl acetate, allyl phenyl ether, allyl benzyl ether, cyclohexyl vinyl ether, alpha-C8-18 olefin, 1, 6-hexadiene, 1, 2-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol and 1, 3-propylene glycol. The additive is one or a mixture of more of 1, 9-decadiene, (poly) ethylene glycol diallyl ether and (poly) propylene glycol diallyl ether. The acrylic resin coated organosilicon elastomer PA (at) SE provided by the invention can be mutually soluble with PC resin and the like, and can also realize toughening and reinforcing effects when being applied to materials such as PC resin and the like.

The application discloses trans-anethole nanoemulsion as well as a preparation method and application thereof, and belongs to the technical field of plant protection. The preparation of the trans-anethole nanoemulsion (TAN-NE) comprises the following steps: mixing polyethylene glycol octylphenyl ether, castor oil and anhydrous ethanol according to a mass ratio of 1:3:12 to prepare mixed surfactants; according to the mass percentage, 12.40% of trans-anethole is added into 28.93% of the mixed surfactants, and deionized water is supplemented to 100% to obtain the TAN-NE. The TAN-NE has a significantly better proliferation inhibition effect on Ralstonia solanacearum than free trans-anethole TAN, and has strong bacteriostatic activity. Indoor pot experiments show that on the 15th day after inoculation, the prevention effect of the TAN-NE is better than the treatment effect, and both are better than TAN and a commercial pesticide, thioconazole, and the TAN-NE has good biological safety to a soil environment.

This invention proposes a polyimide film, its preparation method, and its applications, relating to the field of thin film materials. By weight, it comprises the following raw materials: 50-100 parts dimethylformamide, 5-10 parts diaminodiphenyl ether, 10-20 parts phenylenediamine, 1-2 parts core-shell structured silica-alumina particles, 25-30 parts pyromellitic dianhydride, 1-2 parts organically modified montmorillonite, 1-2 parts aminated thermally conductive particles, 50-100 parts acetic anhydride, and 5-10 parts pyridine; wherein the core-shell structured silica-alumina particles are a composite material with polydopamine as the shell and nano-silica and nano-alumina as the core; the organically modified montmorillonite is obtained by intercalation modification of montmorillonite with an organic compound containing hydroxyl groups; the aminated thermally conductive particles are obtained by graft modification of nitrides with an organic compound containing amino groups. It exhibits good high-temperature resistance, high-pressure breakdown resistance, and thermal conductivity, as well as high mechanical strength and long service life.

The application discloses a non-aqueous electrolyte diluent, a non-aqueous electrolyte and a secondary battery, and belongs to the technical field of electrochemistry. The diluent comprises at least one of difluoro-substituted phenyl ether compounds shown in structural formula (1) to structural formula (3), wherein R1 is selected from C1-C5 alkyl, C1-C5 fluoroalkyl, C1-C5 fluoroalkoxy or C1-C5 fluoroalkenyl. By adding the difluoro-substituted phenyl ether compound shown in structural formula (1), structural formula (2) or structural formula (3) into the non-aqueous electrolyte, the application can serve as a diluent with good thermal stability, effectively reduce direct contact of high-reactivity solvent molecules with the positive / negative electrode interface, and reduce side reactions in the secondary battery which are not conducive to electrochemical cycles.

The application provides a sodium metal battery and an electric device, the sodium metal battery comprising a positive electrode sheet and an electrolyte, the electrolyte comprising: a non-aqueous solvent, the non-aqueous solvent comprising a phenyl ether solvent. Thus, the sodium metal battery provided by the application has good cycle performance.

The present invention belongs to the field of medicine, and specifically relates to a phenyl ether compound containing a hexahydrofuro[3,2-b]furan structure and use thereof. The compound is a phenyl ether compound containing a hexahydrofuro[3,2-b]furan structure represented by general formula I or a pharmaceutically acceptable salt thereof, wherein substituents R1, R2, and R3 have the meanings given in the description. The compound disclosed in the present invention has significant inhibitory activity against xanthine oxidase, and the phenyl ether compound containing a hexahydrofuro[3,2-b]furan structure and the pharmaceutically acceptable salt thereof can be used for preparing a drug for treating hyperuricemia or gout.

This invention provides an energy-storing, luminescent phase-change hot-melt road marking material and its preparation method, made from the following raw materials: C5 petroleum resin, glass microspheres, silane coupling agent, polyoxymethylene, polyoxyethylene, sodium sulfate, multi-walled carbon nanotubes, expanded graphite, oligomeric dopamine, isophorone diisocyanate, tetraethylenepentamine, perhydropolysilazane, N,N,N',N'-tetramethylbenzidine, 2,8-bis(diphenylphospho)dibenzo[b,d]thiophene, silica aerogel powder, nano-titanium dioxide powder, calcium carbonate powder, barite powder, lauric acid, palmitic acid, hexadecyltrimethylammonium bromide, polyethylene glycol octylphenyl ether, dioctyl phthalate, and acetic acid. While ensuring the visibility and durability of the road markings, this invention reduces high-temperature deformation and low-temperature cracking of the hot-melt road markings, minimizes the propagation of internal cracks, increases the service life of the hot-melt road markings, and reduces maintenance and repainting costs.

The invention provides a maleimide compound, a preparation method of the maleimide compound, a maleimide-cyanate ester compound and application of the maleimide-cyanate ester compound, and relates to the technical field of substrate material preparation. According to the maleimide compound, a triphenyl-s-triazine structure or a trifluoromethyl phenyl fluorene structure is selected as a main body structure of the maleimide compound, a phenyl ether structure is introduced to increase the flexibility of a molecular structure, and the prepared bismaleimide monomer can be used as a raw material for preparing BT resin; according to the invention, the bismaleimide monomer in the BT resin is added, the performance index of the BT resin is broadened, and the application range and the application prospect of the BT resin are expanded, so that the substrate material prepared from the BT resin has good heat resistance, mechanical property and dielectric property and relatively low water absorption rate. The invention also provides a preparation method and application of the maleimide compound.

This invention discloses a method for preparing a thermally stable multilayer battery separator, relating to the field of battery materials technology. The battery separator of this invention comprises a modified polyethylene film and a coating applied to at least one surface of the modified polyethylene film. The modified polyethylene film is obtained by mixing polyethylene, poly-2,6-dimethyl-1,4-phenyl ether, and maleic anhydride-grafted polyethylene in a mass ratio of 5-7:2-3:1-2, extruding the mixture into a film, and then subjecting it to corona treatment. The coating is obtained by mixing modified nano-titanium dioxide containing ester groups, a solution of 3-(3-(aminomethyl)phenyl)-2,2-difluoropropionitrile, and ethanol in a mass ratio of 1-3:5-8:1-3, adding a small amount of catalyst to obtain a coating solution, and then coating and drying the mixture, significantly improving the thermal stability of the battery separator.

The invention provides a silicon dioxide and amorphous indium tin oxide selective etching solution. The silicon dioxide and amorphous indium tin oxide selective etching solution comprises an alcohol substance, a fluorine-containing substance, a corrosion inhibitor, a surfactant and the balance of water. The alcohol is one or a combination of more of ethylene glycol, polyethylene glycol, glycerol, isooctanol or isopropanol. The fluorine-containing substance is one or a combination of more of hydrofluoric acid, ammonium fluoride or ammonium bifluoride. The etching inhibitor is one or a combination of more of N, N-diisopropylethylamine, 2-hexylbenzimidazole, hydroxyethylidene-1, 1-diphosphonic acid, 5-oxo-4, 5-dihydropyrazolo [1, 5-a] pyrimidine-3-formonitrile or 5-chloro-[1, 2, 4] triazolo [1, 5-a] pyrimidine. The surfactant is one or a combination of more of polyethylene glycol mono-p-tert-octylphenyl ether, polyethylene glycol-propylene glycol monobutyl ether or coconut oil fatty acid diethanolamide. The etching solution can quickly remove a silicon dioxide deposition layer on the premise that the etching rate of amorphous indium tin oxide is smaller than or equal to 0.03 nm / min, the etched surface of silicon dioxide is smooth after etching, and etching of silicon dioxide and amorphous indium tin oxide has a high selection ratio.

The application belongs to the technical field of organic synthesis, and discloses a method for preparing n-butyl ether and butyl phenyl ether simultaneously through etherification reaction. Phenol, n-butanol and a phosphoric acid catalyst are mixed, and then etherification reaction is carried out under a protective gas to obtain n-butyl ether and butyl phenyl ether. The method can prepare n-butyl ether and butyl phenyl ether simultaneously, the combined selectivity of n-butyl ether and butyl phenyl ether can reach 98-99%, the reaction has few by-products, the conversion efficiency of raw materials is high, the products obtained by the reaction are important chemical raw materials, and the method has high economic benefits. The preparation method does not need to add strong acid and strong base, the reaction condition is mild, the safety coefficient of the preparation process is high, there is no defect of damage and corrosion to the equipment, and the method belongs to a more green and environmental protection organic synthesis method.

This invention relates to the fields of pesticide chemistry and medicinal chemistry, and in particular to a coumarin derivative containing a substituted phenyl ether structure, its preparation method, and its applications. This invention organically combines a coumarin structure with a substituted phenyl ether fragment to synthesize a novel class of coumarin derivatives containing a substituted phenyl ether structure. These compounds exhibit excellent antifungal activity and broad-spectrum activity, demonstrating superior inhibitory activity against *Agropyron cristatum*, *Sclerotinia sclerotiorum*, *Botrytis cinerea*, and *Tricholoma matsutake*. This invention provides a foundation for the development of novel fungicides using coumarin derivatives containing substituted phenyl ether structures as active ingredients.