165 results about "Phenylphosphine" patented technology

The invention relates to a molecular tag DMDPM compound, a preparation method thereof and application of the molecular tag DMDPM compound in assisting homogeneous synthesis of heptapeptide H6K, and belongs to the technical field of organic synthesis. The molecular tag DMDPM compound is 2, 4-dimethoxy-4 '-diphenylphosphinyl oxydiphenyl alcohol, and the molecular tag DMDPM compound is 2, 4-dimethoxy-4'-diphenylphosphinyl The method has the advantages of a liquid-phase synthesis method and a solid-phase synthesis method, H6K can be simply, quickly, economically and efficiently synthesized and prepared, and a 2, 4-dimethoxy-4 '-diphenylphosphinyloxy diphenyl alcohol small-molecule auxiliary group (also called as a carrier) can be recycled and directly reused, so that raw material waste is reduced, waste pollution is reduced, the cost is saved, and environmental protection is facilitated.

The invention discloses a preparation method of 3, 6-dichloropyridazine, and belongs to the technical field of chemistry. According to the method, 3, 6-dihydroxypyridazine is used as a raw material, an organic solvent and triphenylphosphine oxide are combined to form a dichlorotriphenylphosphine intermediate state which is used as a chlorinating agent, dihydroxyl is substituted to generate 3, 6-dichloropyridazine, triphenylphosphine oxide and solid light are used as raw materials, heating reaction is performed to prepare 3, 6-dichloropyridazine, meanwhile, a one-pot method can be adopted in the two-step reaction, and operation is easy and convenient. The novel preparation method for synthesizing 3, 6-dichloropyridazine provided by the invention has the advantages of low raw material cost, high yield, high gas phase purity and no pollution, is suitable for industrial production, can meet industrial requirements, provides a new idea for later preparation of 3, 6-dichloropyridazine, has the remarkable advantages of high gas phase purity and high yield, and is suitable for industrial production. Wide application prospects are realized.

The invention belongs to the technical field of light-emitting hybrid materials, and particularly discloses a preparation method and application of an efficient blue light emitting hybrid material. The preparation method comprises the following steps: dispersing cuprous halide, triphenylphosphine (tpp) and tetraethylammonium halide in N, N-dimethylformamide (DMF) according to a molar ratio of 1: 1: 1 to form a uniform solution, and performing ultrasonic treatment at room temperature to generate luminescent powder; and washing, centrifuging and drying in vacuum to obtain the hybrid material. The highest photoluminescence quantum yield is up to 70%, and the luminescence mechanism is thermally activated delayed fluorescence. The material can be used for a white light LED (CIE coordinate (0.33, 0.33)) and an X-ray scintillator (the light yield is 32537 photons / MeV, and the spatial resolution is 20lpmm <-1 >), and has the characteristics of simple preparation and excellent performance.

The invention provides a method for constructing an aryl C-P bond through a reaction of an Ar-F compound of a nickel catalysis electron donating group, which comprises the following steps: in the presence of a nickel catalyst, an additive and alkali, carrying out a coupling reaction on a substituted aryl compound in a formula B and a compound in a formula C diphenylphosphine oxide in an organic solvent to generate an aryl phosphine oxide compound in a formula A, the reaction formula is shown in the specification, Ar is or, and R is an electron-donating group. The method disclosed by the invention has the effects that the substrate has universality, the operation is simple, the condition is mild, a noble metal catalyst and a phosphine ligand are not needed, the cost is low, and the yield is high.

The application relates to the technical field of catalysts, and discloses a palladium / alumina catalyst and a preparation method and application thereof. A Schiff base phosphine cyclodextrin ligand is synthesized through two-step reactions of nucleophilic substitution and Schiff base condensation, the molecular structure of the ligand covalently bridges the hydrophobic cavity of beta-cyclodextrin and the strong coordination site of diphenylphosphine through a rigid Schiff base bond; subsequently, the phosphine group of the ligand is coordinated with a palladium salt under a specific pH, and a uniform and stable palladium-ligand colloid precursor is formed under the assistance of a directing agent and a stabilizing agent; finally, the colloid is mixed with an alumina carrier for impregnation, drying, and a palladium / alumina catalyst is obtained. Through molecular design and process innovation, the problems of low activity, poor selectivity and insufficient stability of traditional catalysts are solved. When the catalyst is used for preparing hydrogen peroxide by hydrogenating anthraquinone, the hydrogenation efficiency is significantly improved, the selectivity is extremely high, and the cycle stability is excellent, so the catalyst has important industrial application value.

The present invention relates to a method for preparing triphenylphosphine, comprising performing heat treatment on a chlorodiphenylphosphine raw material at a temperature of 280-480°C to prepare triphenylphosphine, wherein the content of dichlorophenylphosphine in the chlorodiphenylphosphine raw material does not exceed 35 wt%, based on the total weight of the chlorodiphenylphosphine raw material.

The invention provides a perovskite quantum dot compound and a preparation method and application thereof. The preparation method of the perovskite quantum dot compound comprises the following steps: preparing a mixture containing a triphenylphosphine halide copolymer, carrier particles, a first cationic precursor and a second cationic precursor; the A comprises one or more of CH3NH3 +, CH3CH2NH3 +, (CH3) 2CHNH3 +, CH (NH2) 2 +, Ar-CH3CH2NH3 +, Li < + >, Na < + >, K < + >, Rb < + > and Cs < + >; b comprises one or more of Pb < 2 + >, Sn < 2 + >, Be < 2 + >, Mg < 2 + >, Ca < 2 + >, Sr < 2 + >, Ba < 2 + >, Zn < 2 + >, Ge < 2 + >, Fe < 2 + >, Co < 2 + > and Ni < 2 + >; x comprises one or more of Cl <->, Br <-> and I <->; after the reaction is finished, a powdery or granular perovskite quantum dot compound is obtained, perovskite quantum dots are dispersed in a triphenylphosphine halide copolymer, and the triphenylphosphine halide copolymer coats the surfaces of carrier particles. The preparation method is low in cost, energy-saving and simple.

The invention relates to a synthesis method of triphenylphosphine, which belongs to the technical field of organic synthesis, and comprises the following steps: Step 1: adding a solvent, magnesium chips and an initiator into a reaction bottle, and heating to 50-60 DEG C; 2, dropwise adding a mixed solution of benzene halide and phosphorus trichloride, and after addition is completed, carrying out a heat preservation reaction; 3, after the reaction is finished, the temperature is reduced to the room temperature, water is added for washing and layering, an organic phase is concentrated, the solvent is recycled, and triphenylphosphine is obtained. According to the method, benzene halide and phosphorus trichloride are used as raw materials and react with magnesium chips through a one-pot method in a solvent to directly synthesize triphenylphosphine, compared with a traditional synthesis method, a Grignard reagent does not need to be prepared step by step, high energy consumption caused by low-temperature reaction conditions during subsequent Grignard reagent addition is not needed, the process is safer and more efficient, energy consumption can be effectively reduced, and the method is suitable for industrial production. Compared with a traditional synthesis method, the method has the advantages of no high risk of a sodium method process, safety and environmental protection pressure relief, simple overall process, high yield and suitability for industrial large-scale production.

The invention discloses a kind of recycling polypropylene to prepare high-impact material and preparation method thereof, relate to the field of materials. When the present invention uses recycling polypropylene to prepare high-impact material, first, polypropylene is grafted with vinyl diphenylphosphine, then reacted with 1-(3-chlorophenyl)-2-propyn-1-ol, and then reacted with 6-(methyl formate) pyridine-3-boric acid to obtain modified polypropylene; Secondly, calcium carbonate pretreated with 3-aminopropyltrimethoxysilane and 3-thiophene carboxaldehyde are reacted, and thiophene, 6-(thiophene-2-yl) pyridine-2-carboxylic acid, and 6-(3-thienyl) pyridine-2-carboxaldehyde are polymerized on the surface of calcium carbonate to obtain modified calcium carbonate; Finally, recycled polypropylene, modified polypropylene, modified calcium carbonate, sodium cyanide, and bismaleimide are melt-blended, and then extrusion granulation is performed to obtain high-impact material; The high-impact material prepared by the present invention has good impact resistance, anti-aging performance and antibacterial performance.

The invention relates to a method for preparing triphenylphosphine, which comprises the following steps: a diphenylphosphine chloride raw material is subjected to heat treatment at the temperature of 280-420 DEG C to prepare triphenylphosphine, and at least part of phenylphosphine dichloride is removed in the heat treatment process.

The application discloses preparation of carbazolyl 3,5-dicyanopyridine derivatives, room temperature phosphor and anti-counterfeiting performance thereof. The preparation method comprises the following steps: adding ortho-, meta- or para-carbazolyl benzaldehyde and malononitrile into a reaction bottle, stirring and reacting under room temperature conditions with sodium hydroxide as a catalyst and anhydrous methanol as a solvent, and obtaining ortho-, meta- or para-carbazolyl 3,5-dicyanopyridine by separating and purifying the reaction crude product. Crystals of the three compounds are obtained by a solvent diffusion method with dichloromethane-petroleum ether as a solvent, and the crystal state room temperature phosphor material is obtained. The crystals are doped with urea / triphenylphosphine at a weight ratio of 1:100, the doped crystals are uniformly ground and mixed, and then heated to be molten, so that the host-guest doped phosphor material is obtained, and the novel material is used in the field of anti-counterfeiting patterns.

The invention provides a green preparation method and application of diphenyl phosphine oxide. The preparation method comprises the following steps: step 1, mixing diphenyl alkoxy phosphine, water and Lewis acid, and fully stirring for reaction to obtain a reaction solution containing diphenyl phosphine oxide and alcohol; step 2, distilling the reaction liquid, washing with water, standing, separating liquid, collecting an organic phase, drying the organic phase, and cooling and crystallizing to obtain diphenylphosphine oxide; and step 3, rectifying and purifying the distilled alcohol, and pumping the distilled acid and water washing liquid into a reaction kettle for cyclic catalysis. The diphenylalkoxyphosphine is used as a raw material and is subjected to hydrolysis reaction with water under the catalysis of the lewis acid to generate diphenylphosphine oxide and alcohol, the lewis acid can be continuously returned to the reaction kettle to participate in the reaction after being subjected to subsequent distillation, the synthesis process is simple, the atom economy is high, the reaction principle is simple, the conditions are easy to control, and the method is green and environment-friendly and can be used for industrial production.

The application belongs to the technical field of lithium secondary batteries, and discloses a lithium secondary battery electrolyte with high and low temperature performance and a lithium secondary battery.The electrolyte comprises a non-aqueous solvent, a lithium salt, a triphenyl phosphine alkenyl compound and a compound with a carbonyl group.The electrolyte of the application is formed by the joint action of the triphenyl phosphine alkenyl compound and the compound with a carbonyl group, wherein the triphenyl phosphine alkenyl compound can be reduced in preference to the solvent, and the compound with a carbonyl group can form a thin and uniform SEI film on the positive and negative electrode surfaces of the lithium secondary battery through synergistic action, complex with positive transition metal ions, passivate the positive electrode surface, inhibit metal dissolution, improve the low-temperature rate discharge performance of the battery, and improve the normal temperature and high-temperature cycle life.

The invention provides a preparation method of a novel chiral thiourea / phosphine bifunctional organic catalyst with a cis-cyclic 1, 2-phosphinamine skeleton and application of the novel chiral thiourea / phosphine bifunctional organic catalyst in an asymmetric catalytic reaction. The chiral organic catalyst is prepared by taking cis chiral 2-(diphenylphosphine)-1, 2, 3, 4-tetrahydro-1-naphthylamine and an isothiocyanate compound as raw materials through a one-step reaction under a mild condition. The chiral thiourea / phosphine bifunctional organic catalyst is simple to prepare and stable in property, and shows excellent catalytic activity and stereoselectivity in an asymmetric hydrosilylation reaction of o-amido benzophenone.

The invention belongs to the technical field of polymer flame retardance, and relates to a fluoride-free anti-dripping functional flame retardant for polycarbonate as well as a preparation method and application thereof, in the chemical structural formula of the fluoride-free anti-dripping functional flame retardant for polycarbonate, n is 5-20, and M is Li, Na, K, Rb or Cs; the preparation method comprises the following steps: mixing a metal salt solution of 2, 2 '-disulfonic acid benzidine with an acid-binding agent, dropwise adding a phenylphosphonic dichloride solution, continuing to stir and react after dropwise adding, heating after reaction, dropwise adding a diphenyl silanediol solution, continuing to react after dropwise adding, and finally performing post-treatment to obtain the fluoride-free anti-dripping functional flame retardant for polycarbonate. According to the application of the flame-retardant polycarbonate, polycarbonate and the fluoride-free anti-dripping functional flame retardant for polycarbonate are subjected to melt blending, so that the flame-retardant polycarbonate is prepared. The functional flame retardant disclosed by the invention integrates multiple functions of flame retardance, molten drop resistance, carbon formation enhancement and the like, and flame-retardant polycarbonate prepared from the functional flame retardant realizes no molten drop by virtue of a self-enhanced ceramic carbon layer.

The application discloses a high-temperature-resistant polyvinyl chloride adhesive tape and a preparation method thereof, and belongs to the technical field of polymer materials and adhesive products. The high-temperature-resistant polyvinyl chloride adhesive tape comprises the following raw materials in parts by weight: synergistically modified polyvinyl chloride, diphenyl phosphine oxide, chlorinated polyethylene, diisononyl phthalate, antimony trioxide, calcium stearate, zinc stearate, an antioxidant and a leveling agent; the synergistically modified polyvinyl chloride is obtained by introducing catechol structures on the surface of polyvinyl chloride through dopamine self-polymerization deposition, forming a dynamic borate ester structure with 3-aminobenzoic acid, and constructing a Si-O-Si network structure through hydrolytic condensation reaction of octa(3-aminopropyl)silsesquioxane and N-(beta-aminoethyl)-gamma-aminopropyl triethoxysilane. The dopamine-borate ester-silicone synergistic network structure is constructed, and the diphenyl phosphine oxide is introduced for function regulation, so that the heat resistance, mechanical properties and dimensional stability of the polyvinyl chloride adhesive tape are significantly improved.

The invention relates to the field of composite soft plastic packaging, in particular to a dynamic self-repairing type high-toughness bio-based degradable film and a preparation method and application thereof. The film is composed of a lactic acid high polymer, a copolymer of butylene adipate and butylene terephthalate, a compatibilizer, a nucleating agent, a catalyst, an auxiliary agent and an antibacterial agent, the catalyst is formed by mixing a main catalyst and a co-catalyst, the main catalyst comprises any one of zinc acetylacetonate, ferric acetylacetonate, antimony trioxide and zinc oxide, and the co-catalyst comprises any one of zinc acetylacetonate, ferric acetylacetonate, antimony trioxide and zinc oxide. The cocatalyst is selected from any one of triethylamine, triphenylphosphine and aluminum acetylacetonate. The invention provides an effective scheme for solving the core contradiction that the strength, toughness, repairability and controllable degradability of a bio-based material are difficult to consider at the same time, is expected to replace traditional plastics in the fields of high-end environment-friendly packaging, intelligent agricultural mulching films and the like, and has great environmental benefits and industrialization prospects.

The application relates to a preparation method of (R)-5-chloromethyl-2-oxanone and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: under a protective atmosphere, S1, azidotrimethylsilane and (R)-epichlorohydrin are added into a solvent at -10 DEG C to 10 DEG C, and 1-azido-3-chloro-2-propanol is obtained through reaction; S2, triphenylphosphine and the 1-azido-3-chloro-2-propanol of S1 are added into an organic solvent at -10 DEG C to 10 DEG C, and a mixture is obtained through reaction under a carbon dioxide atmosphere; S3, the mixture of S2 is subjected to recrystallization and cold filtration, and (R)-5-chloromethyl-2-oxanone is obtained. According to the preparation method, (R)-epichlorohydrin is used as a starting material, and (R)-5-chloromethyl-2-oxanone is synthesized through ring-opening reaction and ring-closing reaction, and the purity (98%-99%) and the yield (more than 70%) are high. The route is short, the raw material is cheap and easy to obtain, the reaction is mild, no toxic reagent is used, and the ee value of the obtained product is high (98%-99%).

The application belongs to the technical field of metal-based catalysts, and discloses a metal Rh-based catalyst, a supported catalyst thereof, a preparation method and application. The metal Rh-based catalyst is formed by coordination of a metal Rh central atom with a butanedione oxime ligand and a triphenylphosphine and substituted derivative ligand, and has a structure shown in formula (1). The supported metal Rh-based catalyst is formed by loading the metal Rh-based catalyst on a porous carrier. The metal Rh-based catalyst and the supported catalyst thereof prepared by the application can realize efficient hydroformylation of isooctene to form iso-nonyl aldehyde, and show high isooctene conversion rate and iso-nonyl aldehyde selectivity.

The invention discloses a method for constructing an alpha-aza-aromatic hydrocarbon substituted propenone compound through dipole reversal alpha-position amination reaction of phosphine-catalyzed acetylenic ketone, and relates to a preparation method of the propenone compound. The reaction of the method can be carried out under the following conditions: small organic molecule triphenylphosphine is used as a catalyst, the temperature is 25-50 DEG C, dichloromethane is used as a solvent, acetylenic ketone and an N-heterocyclic aromatic compound are used as reaction substrates, the corresponding functionalized alkenyl ketone compound is obtained, and the highest conversion rate can reach 99%. The method has the advantages of mild reaction conditions, no use of a metal catalyst, environmental friendliness, wide substrate application range, high yield, simple operation, good regioselectivity and commercially available catalyst, and in addition, the target product alpha-aza-arene substituted propenone has potential biological activity and medicinal value.

The invention relates to the technical field of talcum powder, in particular to modified talcum powder for flame-retardant polycarbonate resin and a preparation method and application thereof.The preparation method comprises the following steps that 1, 3-aminopropyltrimethoxysilane and 3-hydroxyphenylphosphinopropionic acid are added, a reaction is conducted with methylbenzene as a solvent, separation and purification are conducted, and a siloxane modifier is obtained; the reaction formula is shown in the specification; and step 2, carrying out surface modification on talcum powder by using a siloxane modifier, fully heating and stirring the talcum powder, the siloxane modifier and the dispersion liquid, reacting, filtering, washing and drying to obtain the modified talcum powder.

The present invention relates to an improved process for preparing triphenylphosphine (TPP) by reacting triphenylphosphine oxide (TPPO) with a specific catalyst.

The present invention belongs to the technical field of organic synthesis, and particularly relates to a method for synthesizing thiosemicarbazone compounds. The method for synthesizing thiosemicarbazone compounds uses (isocyanimino) triphenylphosphine and one of thiophenol substances, thiol substances, and disulfide substances as reactants, and uses methanol or a mixed solution of methanol and water as a solvent for reaction. After separation and purification, thiosemicarbazone compounds are obtained. The synthesis method of the present invention has mild conditions, does not require additional metals and additives, the product is easy to separate and has a high yield, and the reaction is green and efficient.

The invention discloses a fluorescent probe for high-sensitivity monitoring of cell mitochondrial autophagy as well as a preparation method and application thereof. The structure of the fluorescent probe is as shown in formula I in the specification. According to the fluorescent probe provided by the invention, a phenol group is used as an electron donor and a pH response unit, hydroxyl tricyanopyrrole is used as an electron acceptor, triphenylphosphine is used as a mitochondrial targeting group, fluorine atoms are introduced to a benzene ring to improve the response rate and the fluorescence intensity, and meanwhile, a thiophene ring is introduced to further expand the fluorescence emission wavelength. The probe can rapidly target mitochondria and emit corresponding fluorescence signals based on pH differences of different autophagy stages, so that real-time, high-sensitivity and high-selectivity monitoring of the mitochondria autophagy process is realized. In addition, the fluorescent probe is simple in molecular structure, small in molecular weight and easy to synthesize, purify and subsequently modify. Cell experiment results show that the probe can accurately trace the mitochondrial autophagy process in cells, and has good application potential in the field of biological imaging and detection.

The invention discloses an antibacterial polyester fiber and a preparation method thereof, and relates to the technical field of high polymer materials. When the antibacterial polyester fiber is prepared, 1, 3, 5, 7-tetramethylcyclotetrasiloxane, solid super acid and 1, 3-bis (hydroxypropyl) tetramethyldisiloxane react to prepare hydroxyl-terminated methyl hydrogen-containing silicone oil, and then the hydroxyl-terminated methyl hydrogen-containing silicone oil reacts with dimethyl terephthalate and ethylene glycol to prepare polysiloxane copolyester; the preparation method comprises the following steps: carrying out phosphorus-hydrogen addition modification on polysiloxane copolyester and diphenyl (4-vinyl phenyl) phosphine, and then carrying out quaternary phosphonium modification on the modified polysiloxane copolyester and 4-bromine-butylamine hydrobromide to prepare antibacterial modified copolyester; preparing ZIF-8 powder and loading an anti-aging agent; and finally, mixing the antibacterial modified copolyester and the ZIF-8 loaded with the anti-aging agent, melting and spinning to prepare the antibacterial polyester fiber. The antibacterial polyester fiber prepared by the method has excellent antibacterial, flame-retardant and antioxidant properties and the like.

The present invention provides a modified lithium iron manganese phosphate material, a preparation method thereof, a positive electrode, and a lithium ion battery. The modified lithium iron manganese phosphate material includes an iron-based triphenylphosphine boride and a lithium iron manganese phosphate material, and the iron-based triphenylphosphine boride is located on the surface of the lithium iron manganese phosphate material. The chemical formula of the iron-based triphenylphosphine boride is FeCl 2‑x (BH4) x (PPh3)2, where the value range of x is 0 < x < 2. The provided modified lithium iron manganese phosphate material uses an iron-based triphenylphosphine boride to modify the lithium iron manganese phosphate material, which can effectively improve the electrochemical stability and electrical properties of the positive electrode material, and further improve the cycle performance and electrochemical performance of the battery.

The invention belongs to the field of chemical pesticides, and relates to an insecticide, in particular to benzo [e] [1, 3] thiazine-2, 4-diketone compounds, pharmaceutically acceptable salts and a preparation method thereof.The benzo [e] [1, 3] thiazine-2, 4-diketone compounds are prepared by stirring benzo [c] [1, 2] dithio-3-ketone compounds and triphenylphosphine in a solvent and then adding carbamic acid p-nitrophenyl ester compounds for a synthetic reaction. The compound is a 3, 3] thiazine-2, 4-diketone compound. Compared with a traditional synthesis method, the method has the advantages that raw materials are easy to prepare, the highest yield can reach 99%, reaction conditions are mild, operation is easy and the like, it is found through insecticidal activity screening that the synthesized benzo [e] [1, 3] thiazine-2, 4-diketone compound has good insecticidal activity, and the method has important significance on research of synthesis and application of the compound.

The invention discloses a synthesis method of (S)-3-aminotetrahydrofuran, which comprises the following steps: (1) reacting (R)-3-hydroxytetrahydrofuran with phthalimide, triphenylphosphine and diethyl azodicarboxylate in tetrahydrofuran to obtain a condensation product; and (2) reacting the condensation product obtained in the step (1) with a methylamine-ethanol solution, or reacting with hydrazine hydrate in methanol to obtain (S)-3-aminotetrahydrofuran. The method is efficient, low in cost and environmentally friendly, has the advantages of simple process, mild conditions, high yield, easily available raw materials and the like, provides a feasible technical scheme for industrial production of (S)-3-aminotetrahydrofuran, and has a good application prospect.

The present invention discloses a preparation method of a luminescent iodine adsorbent and its protective application, which relates to the technical field of radioactive waste gas and waste liquid treatment. The method comprises dissolving an organic ligand and a metal ion in a solvent to obtain a mixed solution, reacting the mixed solution at room temperature, and assembling a luminescent MSOFs adsorbent; wherein the organic ligand is a thiol ligand or a phenylphosphine derivative with a nitrogen heterocycle; and the central atom of the ligand comprises gold, silver, copper, platinum, palladium, iron, aluminum, nickel or cobalt. The iodine adsorbent and protective device prepared by the present invention have excellent adsorption capacity, low cost, can be quickly synthesized in large quantities, have a high adsorption rate, and are conducive to efficient treatment and real-time monitoring of iodine; and the preparation method of the present invention has simple steps, is easy to operate, and has low equipment requirements.

The invention provides a Tralopyril-triphenylphosphine derivative as well as a preparation method and application thereof, and belongs to the technical field of synthesis of pesticide compounds. According to the invention, Tralopyril is used as a parent structure, flexible chains with different lengths are coupled and spliced with triphenylphosphine cations to synthesize a series of new compounds, and the chemical structure is novel. Biological assay results show that in the aspect of nematode killing, toxicity of part of the compounds to caenorhabditis elegans is higher than that of a commercial medicament fosthiazate; in root-knot nematode potting activity determination, the root irrigation activity of the compound 5f is higher than that of a control agent trifluoropyridylamine. In the aspect of sterilization, the compounds have relatively high biological activity on rhizoctonia solani, sclerotinia sclerotiorum, gaeumannomyces graminis and pyricularia oryzae, and the activity of the compounds 5b, 5c, 5d and 5f on the sclerotinia sclerotiorum is higher than that of a commercial medicament azoxystrobin. The synthesized novel compound has a relatively high commercialization prospect.