125 results about "Phthalimides" patented technology

The invention discloses a high-strength moisture-proof gypsum board and a preparation method thereof, and relates to the technical field of gypsum board preparation. The high-strength moisture-proof gypsum board is prepared by dipping the surface paper in the composite dipping liquid and then pouring the surface paper and the gypsum core with the waterproof agent, the composite dipping liquid comprises the methoxy vinyl ether copolymer and the epoxy polyoxymethylene dimethyl ether, and the methoxy vinyl ether copolymer is 2, 3, 5-trimethyl-1, 3-pentanediol monoisobutyrate. According to the present invention, epoxy polyoxymethylene dimethyl ether is prepared by reacting 2, 4-dimethoxymethoxyphenylacetic acid with 2-hydroxyethyl vinyl ether, and the epoxy polyoxymethylene dimethyl ether is prepared by terminating polyoxymethylene dimethyl ether with allyl and then reacting with phthalimide hexperoxy acid, such that the waterproofness and the mechanical property of the gypsum board are improved; the waterproof agent is prepared by reacting hydrogen-containing silicone oil and fluorine-containing hyperbranched amide polyurea urethane, so that the moisture resistance and bonding strength of the gypsum board surface paper are enhanced, and additional mechanical support is provided for the gypsum board.

The invention relates to a green preparation method of fluopyram intermediate 3-chloro-5-(trifluoromethyl)-2-ethylaminopyridine, which comprises the following steps: step 1, Ullmann reaction: coupling 3-chloro-2-methyl-5-trifluoromethylpyridine (C1) and N-bromomethyl phthalimide (C2) in the presence of a copper catalyst and potassium tert-butoxide to generate an intermediate (C3); and step 2, hydrolysis reaction: hydrolyzing the intermediate (C3) in the presence of hydrazine sulfate and an alkaline condition to generate the fluopyram intermediate 3-chloro-5-(trifluoromethyl)-2-ethylamino pyridine. The method has the advantages of short synthesis steps, easily available raw materials, no use of high-toxicity cyanogen compounds, low catalyst cost, difficult poisoning, recycling, simple post-treatment process, and less waste liquid generation, greatly reduces the production cost, improves the production safety, reduces the waste liquid discharge amount, and accords with the idea of green synthesis.

The invention relates to the technical field of UV coatings, and discloses an environment-friendly UV curing coating for a thin film aluminum plating process and a preparation method thereof.The preparation method comprises the steps that polyethylene glycol diglycidyl ether, N-(4-carboxyl phenyl) phthalimide and acryloyl chloride serve as raw materials, acrylate phthalimide polyethylene glycol containing two alkenyl groups is prepared, and then the environment-friendly UV curing coating for the thin film aluminum plating process is prepared; the modified epoxy resin is used as a reactive diluent, is subjected to a photocuring reaction with epoxy acrylate, contains a flexible polyether molecular chain, and is crosslinked and cured into epoxy resin, so that a very good toughening effect is achieved, and the flexibility, impact resistance and bending strength of a coating are improved. According to the present invention, the aluminum sheet is adopted as the base material, the thermal stability phthalimide structure is contained, such that the coating maintains the good thermal decomposition temperature and the good heat resistance, the aluminum sheet is adopted as the base material, the coating has the good adhesion and the good adhesion property, and the good practical application in the film aluminum plating process is provided.

The invention discloses a synthetic method of an indaziflam intermediate, which comprises the following steps: by taking (1S, 2S)-2, 6-dimethyl-1-hydroxyindane and phthalimide as initial raw materials, firstly carrying out Mitsunobu reaction in the presence of an azo reagent and a phosphine reagent to obtain the intermediate; the preparation method comprises the following steps: (1) preparing an intermediate, namely (1R, 2S)-2, 6-dimethyl-1-aminoindane, removing phthalimide from the intermediate obtained in the step (1) by hydrazine hydrate to obtain (1R, 2S)-2, 6-dimethyl-1-aminoindane, and finally salifying to obtain the indaziflam intermediate (1R, 2S)-2, 6-dimethyl-1-aminoindane hydrochloride. The synthesis method has the advantages of cheap and easily available initial raw materials and reaction reagents, low production cost, simple reaction operation, mild reaction conditions, high reaction safety, especially high reaction selectivity and resolution selectivity, two-step reaction yield of more than 70%, ee value of more than 98%, and suitableness for industrial mass production.

The present invention provides a water-based dispersion comprising (a) nitrogen compound selected from 3a,4,7,7a-Tetrahydro-1H-isoindole-1,3(2H)-dione and 1,3- Dihydro-2H-isoindole-1,3-dione and (b) sulfonate-based dispersant, and further provides a process for producing phthalimide based fungicide which comprises (1) preparing a water-based dispersion comprising (a) nitrogen compound such as 3 a, 4, 7,7a- Tetrahydro- 1H-isoindole-1,3 (2H)-dione and 1, 3 -Dihydro-2H-i soindole-1,3- dione and (b) sulfonate-based dispersant, (2) reacting the dispersion of step (1) with aqueous alkaline solution, (3) reacting the resulting salt with mercapto-based compound selected from perchloromethyl mercaptan (PCMM) and pentachloro ethyl mercaptan (PCEM) to obtain phthalimide based fungicide such as folpet, captan and / or captafol.

The invention discloses a method for producing N-(2-hydroxyethyl)-phthalimide by the aminolysis of phthalic anhydride slag by ethanolamine, and belongs to the technical field of phthalic anhydride slag recycling. The method can convert phthalic anhydride and other components in phthalic anhydride slag into organic chemical and pharmaceutical intermediate N-(2-hydroxyethyl)-phthalimide. The present invention utilizes the aminolysis reaction of ethanolamine and phthalic anhydride, and the phthalic anhydride waste residue aminolysis product can be separated and purified by recrystallization through water while hot, and the product N-(2-hydroxyethyl)-phthalimide purity can reach more than 95%, and the conversion rate of phthalic anhydride in phthalic anhydride slag can reach more than 95%. The process conditions of the present invention are mild, the separation is simple, the product added value is high, the large-scale resource recycling of industrial phthalic anhydride slag can be realized, and a new synthetic route is opened up for the production of N-(2-hydroxyethyl)-phthalimide.

The invention relates to the technical field of pesticide synthesis, and discloses a synthesis method of captan. The preparation method comprises the following steps: respectively dropwise adding an aqueous solution of an alkali metal compound and perchloromethyl mercaptan into an aqueous solution of 1, 2, 3, 6-tetrahydrophthalimide, and controlling the pH value of a reaction system to be 7-11 in the dropwise adding process; and reacting after dropwise adding to obtain captan. According to the method, the alkali metal compound aqueous solution and the perchloromethyl mercaptan are dropwise added, and the pH value of a reaction system is controlled within a specific range in the dropwise adding process, so that decomposition of 1, 2, 3, 6-tetrahydrophthalimide and perchloromethyl mercaptan in an alkaline environment can be effectively avoided, the occurrence of series side reaction can be effectively reduced, and the yield of 1, 2, 3, 6-tetrahydrophthalimide and perchloromethyl mercaptan is improved. The utilization rate of the raw materials and the product yield are improved under the condition of not using a catalyst.

The present disclosure provides for polymers and modified polymers and methods of depolymerization of polymers and modified polymers. The present disclosure provides for an efficient approach for the depolymerization of polymers pendent group activation. The present disclosure includes polymers that include a low mol% of thermolytically labile groups (e.g., phthalimide ester-containing monomers). The polymers can be synthesized via conventional radical polymerization to produce polymers that are colorless, transparent and closely resemble the unfunctionalized polymer.

Disclosed is a method for preparing oxetan-2-ylmethanamine, which belongs to the field of organic synthesis. [2-(1-ethoxyethoxy)methyl]propylene oxide is used as an initial raw material, and reacted in the presence of potassium tert-butoxide and trimethylsulfoxonium iodide; the resulting product is reacted with a sulfonyl compound and triethylamine; the resulting product is reacted with a compound of phthalimide; the resulting product is reacted with an amino group-containing compound, to obtain oxetan-2-ylmethanamine. The method according to the disclosure allows for an overall yield of not less than 30% in scale-up production (kilogram level), which is higher. Moreover, compared with the traditional method for preparing oxetan-2-ylmethanamine, a palladium-carbon catalytic hydrogenation step is not required, and dangerous chemical-sodium azide is not required in the method according to the disclosure. Thus, the method has high safety, low production cost, simple operations, and thereby is suitable for industrial production.

This invention provides a method for preparing a foamed copper-based composite organic compound layer catalytic material, comprising the following steps: forming 8-hydroxyquinoline molybdenum (Mo(C)) on the surface of a foamed copper matrix. 9 H 6 NO) 4 Organic compound layer; 8-hydroxyquinoline molybdenum (Mo(C)) 9 H 6 NO) 4 The organic compound layer is converted into phthalimide 8-hydroxyquinoline molybdenum (C). 8 H 4 NO 2 ) 2 (C 9 H 6 NO) 2 ; Phthalimide 8-hydroxyquinoline molybdenum Mo(C) 8 H 4 NO 2 ) 2 (C 9 H 6 NO) 2 Conversion to copper phthalimide / 8-hydroxyquinoline molybdenum Cu(C) 8 H 4 NO 2 ) 2 / Mo(C 9 H 6 NO) 2 The foamed copper-based composite organic compound layer catalytic material is finally obtained. The catalytic material prepared by the method of this invention can effectively improve the Faradaic efficiency, ammonia selectivity, production rate, and nitrate removal rate of the electrochemical reduction of nitrate to ammonia technology.

The present disclosure provides for polymers and modified polymers and methods of depolymerization of polymers and modified polymers. The present disclosure provides for an efficient approach for the depolymerization of polymers pendent group activation. The present disclosure includes polymers that include a low mol% of thermolytically labile groups (e.g., phthalimide ester-containing monomers). The polymers can be synthesized via conventional radical polymerization to produce polymers that are colorless, transparent and closely resemble the unfunctionalized polymer.

The present application relates to the technical fields of UV coating, and discloses an environment-friendly UV curing coating for thin film aluminum plating process and a preparation method thereof, the present application uses polyethylene glycol diglycidyl ether, N-(4-carboxyl phenyl) phthalimide and acryloyl chloride as raw materials to prepare acrylate phthalimide polyethylene glycol containing two alkenyl groups, which is used as an active diluent to carry out a photocuring reaction with epoxy acrylate, contains a flexible polyether molecular chain, is crosslinked and solidified into an epoxy resin, has a good toughening effect, and improves the flexibility, impact resistance and bending strength of the coating. Moreover, the phthalimide structure has thermal stability, so that the coating has a good thermal decomposition temperature and heat resistance. The aluminum sheet is used as a base material, the coating has good adhesion and bonding properties, and has good practical application in the thin film aluminum plating process.

The present invention discloses a derivative of phthalimide-conjugated 3-hydroxy-pyridin-4-one and its application, and synthesizes a class of monoamine oxidase B inhibitors with iron ion chelating activity. Innovatively, a hydroxy-pyridone derivative with iron ion chelating activity is organically combined with a phthalimide derivative with hMAO-B inhibitory activity, which has significant advantages in the treatment of neurodegenerative diseases such as Alzheimer's disease and Parkinson's disease with complex pathogenesis.

The present invention relates to an N-benzyl phthalimide derivative compound of formula I, a pharmaceutical composition comprising the same, a medicament, its use, combination, and methods for treating acute and chronic pain, primarily focusing on neuropathic disorders and syndromes associated with neuropathic pain.

The invention relates to the technical field of oral care compositions, in particular to an oral care composition and a preparation method and application thereof.The oral care composition comprises a first composition and a second composition, the first composition comprises an anti-sensitive agent, a cosolvent, a first thickening agent, a surfactant and a first auxiliary, and the second composition comprises an anti-sensitive agent, a cosolvent, a second thickening agent, a surfactant and a second auxiliary; the first composition comprises phthalimide peroxyhexanoic acid, a cosolvent, a first thickening agent, a first auxiliary agent and deionized water, the second composition comprises phthalimide peroxyhexanoic acid, a cosolvent, a second thickening agent, a second auxiliary agent and deionized water, at least one of the cosolvent, the first auxiliary agent and the second auxiliary agent contains a flavoring agent, and the first composition and the second composition are separately stored before use. The anti-sensitive agent is prevented from being in contact with the phthalimide peroxyhexanoic acid before use. According to the invention, the first composition and the second composition are respectively and independently stored, so that natural decomposition and activity attenuation of phthalimide peroxycaproic acid in the shelf life of the product are inhibited, and the product is ensured to retain high effective active oxygen content after being stored for a long time.

The application belongs to the field of organic synthesis chemistry and relates to a method for preparing alkyl-substituted glycine derivatives by using a visible light-driven decarboxylation alkylation reaction. The method comprises the following steps: mixing glycine derivatives, N-hydroxyphthalimide (NHPI) ester, 2D-COF-4 and an organic solvent, reacting under a blue LED lamp for 24 hours in an argon environment, and obtaining alkyl-substituted glycine derivatives. The method avoids the use of noble metal photocatalysts, the heterogeneous photosensitizer in the reaction is easy to recycle and reuse, the scope of the substrate is wide, and the functional group compatibility is good; the method can be successfully applied to a kilogram-scale amplification experiment, has a good industrial application prospect, and uses a green solvent, ethanol, which is conducive to reducing production cost and production risk and meets the requirements of developing green and environment-friendly chemistry.

The present invention discloses a D-A type molecule with phthalimide as the acceptor, a preparation method, an evaluation method for excited state dynamics and uses thereof. The D-A type molecule with phthalimide as the acceptor is based on phthalimide as the acceptor and carbazole and its derivatives as donors to prepare three compact D-A binary groups. Through structural characterization and related performance analysis and testing of the D-A type molecule with phthalimide as the acceptor, the photoexcited state dynamics of dense electron donor-acceptor compounds is deeply understood, which is of great significance for designing highly efficient heavy-atom-free triplet photosensitizers and developing high-performance organic sensors, dye-sensitized solar cells and other materials. A D-A type molecule with phthalimide as the acceptor, a preparation method and an evaluation method for excited state dynamics disclosed by the present invention provide several D-A type molecules with phthalimide as the acceptor, and study the influence of the electron-donating ability and solvent polarity on the excited state dynamics of the D-A type molecules.

The present invention relates to the technical field of coatings, and discloses an environmentally friendly coating for green building exterior walls and a preparation method thereof. In the present invention, toluene-2,4-diisocyanate and hydroxypropionate phthalimide alkylamide are reacted, then reacted with epoxy resin, and neutralized; finally, water, emulsifier, defoamer, dispersant, pigment and filler are added to obtain the environmentally friendly coating for green building exterior walls. The water-based coating is clear and transparent, does not delaminate, has good dispersibility and excellent storage stability. And grafting flexible alkyl long chains into the epoxy resin can play a good toughening role, which is beneficial to improving the bending strength and impact strength of the epoxy resin casting body. Grafting the high-temperature resistant phenylimide ring group into the epoxy resin molecular chain can increase its initial thermal decomposition temperature, and has broad application prospects in the fields of high-performance heat-resistant, anti-ultraviolet and weather-resistant coatings, building exterior walls, etc.

The application discloses a synthesis method of 3,3-difluorocyclopentylamine hydrochloride, and particularly relates to the technical field of chemical synthesis. The synthesis method comprises the following steps: taking 2-cyclopentenone and phthalimide as raw materials, and sequentially performing a Michael addition reaction, deoxygenation fluorination, removal of a phthaloyl protecting group, Boc protection and deprotection and salt formation reaction to obtain 3,3-difluorocyclopentylamine hydrochloride. The synthesis route and process design of the application are reasonable, the starting raw material is 2-cyclopentenone, the required reaction condition is mild, the post-treatment method is simple, the operability is strong, the raw material and reagent are cheap and easy to obtain, and the total yield can reach 43.6%, so the synthesis method has large-scale preparation value.

The present invention relates to an insecticidal composition comprising of N-(phenylthio) phthalimide (NPP), neem oil and chitosan and method of preparation thereof. The composition of the present invention is useful against insects selected from Helicoverpa armigera, Mythimna separata, Spodoptera frugiperda and other Lepidopteran species of insects. The composition can serve as a formulation that possesses a lower probability of acquiring resistance.

The invention relates to an organic compound, an organic light-emitting device and a display panel. The organic compound has a structural formula as shown in a formula (1): # imgabs0 #. The conjugate length and electron distribution of molecules are effectively adjusted in a nitrogen atom para-position connection mode, so that a higher first singlet excited state energy level is favorably formed, the structure is also favorable for constructing good coplanarity, and a higher glass transition temperature is further realized; in addition, a benzene ring of the phthalimide is easy to introduce a plurality of functional groups, which is beneficial for obtaining a lower refractive index; when a film layer formed by the organic compound and a high-refractive-index film layer are combined to form a covering layer, and the covering layer is applied to the organic light-emitting device, the light-emitting efficiency and the color purity of the organic light-emitting device can be remarkably improved.

The invention discloses a synthesis method of 9, 9-bis (trifluoromethyl)-2, 3, 6, 7-xanthene tetracarboxylic dianhydride, which comprises the following steps: (1) carrying out condensation reaction on N-methyl-4-nitrophthalimide and hexafluoroacetone trihydrate under the catalysis of trifluoromethanesulfonic acid to obtain a first intermediate; (2) performing catalytic etherification reaction on the first intermediate in the presence of sodium nitrite to obtain a second intermediate; (3) carrying out hydrolysis reaction on the second intermediate under an alkaline condition to obtain a third intermediate; and (4) dehydrating the third intermediate into anhydride to obtain 9, 9-bis (trifluoromethyl)-2, 3, 6, 7-xanthene tetracarboxylic dianhydride. According to the method, raw materials are low in price and easy to obtain, the reaction yield and the product purity are high, particularly, the situation that potassium permanganate oxidation or nitric acid oxidation is insufficient in the prior art is avoided, and the method is higher in safety, more environmentally friendly and suitable for large-scale industrial production.

The present invention provides A silsesquioxane of formula: (R1SiO1,5)x (R2SiO1,5)y, wherein x ≥ 2, y ≥ 2, and x + y = 6,8,10 or 12; R1 is L1-phthalimide, wherein L1 is a residue selected from the group consisting of saturated or unsaturated C2-C8 hydrocarbon radicals which may be straight, branched or cyclic; and the phthalimide is optionally substituted by one or more halogen, C1-C6 alkyl, -COOH, -OH or -NO2; and R2 is a residue selected from the group consisting of saturated or unsaturated C1-C8 hydrocarbon radicals, which may be straight, branched or cyclic, phenyl and vinyl; wherein the hydrocarbon radicals, phenyl and vinyl are optionally substituted by one or more halogens.

The application provides a synthesis method of N-substituted phthalimide compounds and relates to the technical field of organic synthesis. The synthesis method comprises the following steps: under the condition of having or not having a solvent, using a copper salt as a catalyst and a peroxide as an additive, synthesizing N-substituted phthalimide compounds by reacting phthalic acid compounds I with amide compounds II; the reaction raw materials of the synthesis method are cheap and easy to obtain, are safe and environmentally friendly, have good tolerance and resistance to various substituents and functional groups, are beneficial to large-scale industrial production, and provide an efficient, convenient, green, environmentally-friendly and low-cost synthesis path for N-substituted phthalimide compounds.

The invention relates to the technical field of solar cells, in particular to a phthalimide-based self-assembly modifier and a preparation method and application thereof, the structural formula is shown as any one of formulas I, II and III, in the formula, R1, R2, R3 and R4 are independently selected from one of F, Cl, Br, CN, Ph and H, and n is selected from an integer from 1 to 4. The phosphate group in the modifier can anchor the surface of the perovskite to reduce various defects on the interface, and the phthalimide can provide a template for a subsequently deposited charge transport layer (such as C60) to realize uniform film formation, so that the defects on the perovskite interface are reduced to the greatest extent, and non-radiative recombination is reduced. The compound can be applied to the field of batteries as a passivator, and can better hinder interface reaction and improve the stability of devices. The perovskite solar cell can be applied to the field of cells as a transmission layer, and can perform electron selective transmission on the surface of perovskite and optimize interface carrier distribution, thereby reducing non-radiative recombination and effectively increasing the open-circuit voltage of a device.

The application provides a preparation method of a UiO-66-NH2-based mixed matrix membrane, which comprises the following steps: 3,3',4,4'-diphenyltetracarboxylic dianhydride is prepared by adding 4-chloro-N-methyl phthalimide, a catalyst A, a reducing agent and an additive into an aprotic solvent; then UiO-66-NH2 is added into the reaction system to obtain anhydride-capped UiO-66-NH2 (BPDA); UiO-66-NH2 (BPDA), BPDA and ODA are added into DMAC, a dehydrating agent and a catalyst B are added to obtain BPDA-ODA type polyimide containing UiO-66-NH2; and the BPDA-ODA type polyimide containing UiO-66-NH2 and DMAC are configured into a casting solution to obtain a mixed matrix membrane UiO-66-NH2 / BPDA-ODA-N. Compared with the traditional direct doping method for preparing the mixed matrix membrane, the preparation method greatly improves the doping amount of UiO-66-NH2, which makes the permeation flux of CO2 further improved while the selectivity of retaining CO2 is reserved, and the CO2 separation performance is more excellent.

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 invention discloses a preparation method of L-2, 4-diaminobutyric acid dihydrochloride, which comprises the following steps: (1) taking L-homoserine as an initial raw material, and reacting with concentrated hydrochloric acid in the presence of a zinc chloride / ferrous chloride synergistic catalyst to prepare L-2-amino-4-chlorobutyric acid hydrochloride; (2) after neutralization, carrying out an acylation reaction with ethyl chloroformate to generate N-ethoxycarbonyl-L-4-chlorobutyric acid; (3) carrying out esterification with ethanol so as to obtain N-ethoxycarbonyl-L-4-chlorobutyl amino acid ethyl ester; (4) under the catalysis of sodium iodide, carrying out nucleophilic substitution reaction with phthalimide potassium salt, and cooling, crystallizing and purifying the key intermediate by dropwise adding water to obtain L-2-[(ethoxycarbonyl) amino]-4-phthalimide ethyl butyrate; and (5) finally, hydrolyzing for deprotection, and concentrating and crystallizing to obtain the L-2, 4-diaminobutyric acid dihydrochloride. The method has the advantages of mild reaction conditions, simplicity and convenience in operation, high total yield and the like, and is suitable for large-scale industrial production.

The invention discloses a detection method of a rubber scorch retarder and a conversion product thereof, and belongs to the technical field of chemical detection. According to the technical scheme, the method comprises the following steps: extracting a rubber sample to be detected by using an extracting solution, and then carrying out quantitative analysis on N-cyclohexyl-thiophthalimide and phthalimide by using a liquid chromatograph, a liquid chromatograph adopts a gradient elution mode, a mobile phase in 0-2 min is acetonitrile: water = (30-50): (50-70), a mobile phase in 2-5 min is subjected to gradient from the acetonitrile: water = (30-50): (50-70) to the acetonitrile: water = (80-99): (1-20), and the acetonitrile: water = (80-99): (1-20) is kept in 5-8 min; the ratio of acetonitrile to water is (80-99): (1-20), and the ratio of acetonitrile to water is (30-50): (50-70) in 8-11 min, and the ratio of acetonitrile to water is kept (30-50): (50-70) in 11-13 min. The method has the advantages of simple pretreatment steps, short analysis period and high sensitivity, is suitable for quality control and product inspection in the production process, and can provide a reliable detection means for formula optimization and performance evaluation of rubber products; by adopting the detection method disclosed by the invention, the linear range of CTP and PHT is 0.1-100 mg / L, the detection limit of the method is 0.02-0.04 mg / L, the adding standard recovery rate is 98-103%, the analysis result is accurate, and the sensitivity is high.

The invention discloses an N-hydroxyphthalimide compound and an application of the N-hydroxyphthalimide compound in a neutral aqueous flow battery. The N-hydroxyphthalimide compound is a novel positive active molecule based on an aromatic imide skeleton, and the molecular structure of the N-hydroxyphthalimide compound is that a hydroxyl group is connected to an imide nitrogen terminal in a covalent manner. The compound has extremely high oxidation-reduction potential (-1.15 V vs.SHE) and rapid dynamics, and when the compound is applied to a flow battery, the voltage, power and rate performance of the battery can be greatly improved. The novel positive electrode compound provided by the invention is remarkable in application effect, a new solution is provided for constructing a neutral aqueous organic flow battery with high voltage, high power density and high efficiency, and commercial application of the aqueous organic flow battery is promoted.