162 results about "Sulfuryl" patented technology

The invention discloses a preparation process of polyether-ether-ketone, and relates to the technical field of preparation of inorganic compounds. The preparation process comprises the following steps: reacting 4, 4 '-difluorobenzophenone, sodium carbonate and hydroquinone to generate polyether-ether-ketone, taking a polyaryletherketone block oligomer as an end-capping reagent, reacting 4, 4'-difluorobenzophenone with 4, 4 '-dimercaptodiphenyl sulfone, and then reacting with pentaerythritol phosphate to obtain the polyaryletherketone block oligomer. The thioester bond reversibly breaks at the polymerization temperature, exposed active sulfenyl reacts with hydroxyl at the tail end of the polyether-ether-ketone to form a more stable covalent bond, volatilization of the end-capping reagent is avoided, meanwhile, the initial decomposition temperature of the end-capped polyether-ether-ketone is increased, and the stability of the end-capping reagent is improved. The polyether-ether-ketone generated in the polyether-ether-ketone resin product is subjected to treatment procedures of crushing, organic solvent extraction, water washing, filtering, drying and the like, so that the product polyether-ether-ketone is obtained, less three wastes are generated, the solvent can be recycled, the atom economy is relatively high, and the preparation process of comprehensive utilization of resources is realized.

The invention provides a synthesis method of a thioether ligand and a palladium-catalyzed 2-aryl indole compound, and designs an application of the biphenyl thioether ligand and a palladium catalyst in preparation of the 2-aryl indole compound. Indole and arylboronic acid are subjected to a reaction under the action of a palladium catalyst and a biphenyl sulfide ligand, and the structural formula of the biphenyl sulfide ligand is shown in the specification. Ar is phenyl, furyl, thienyl, naphthyl or phenyl substituted by one or more substituent groups; r1 is methyl, methoxyl, fluorine atom, chlorine atom, bromine atom or methyl ester group; r2 is the same or different and is methyl, ethyl, isopropyl, isobutyl, cyclohexyl, benzyl, n-butyl or n-hexyl; r3 is alkoxy, alkylthio, substituted amino or halogen; the palladium catalyst is a divalent palladium compound.

The application discloses a biological electrochemical auxiliary sulfur conversion promoting sulfur-based denitrification and sulfate emission reduction method and belongs to the field of water treatment. ‑ Nitrogen-containing wastewater enters an elemental sulfur denitrification system, and NO3 0 is reduced to N2 by sulfur autotrophic denitrifying bacteria, and elemental sulfur (S 2‑ ) is converted into SO4 2‑ . Effluent enters a cathode chamber of an electrochemical auxiliary sulfate reduction system, and hydrogen autotrophic sulfate reducing bacteria utilize cathode hydrogen production to reduce SO4 ‑ to HS 2‑ , and meanwhile, alkalinity produced by cathode hydrogen production neutralizes acidity produced in the denitrification process in the elemental sulfur denitrification system. ‑ HS 2‑ / supernatant is returned to the elemental sulfur denitrification system to react with S 0 to generate polysulfide (S n 2‑ ), S n 2‑ , which is used as an efficient electron donor to participate in denitrification, thereby significantly improving denitrification efficiency. The application does not need to add an organic carbon source, sludge production is small, high-concentration nitrogen-containing wastewater is efficiently treated, and the content of sulfate in effluent is simultaneously reduced, thereby realizing sulfur resource recycling, and the application is an economic and environment-friendly autotrophic denitrification method.

This invention relates to the field of catalyst technology, specifically to a latent epoxy resin curing catalyst with precisely controllable activity and its preparation method. The catalyst is 1-(2-(N-tert-butyl-N'-phenylurea)ethyl)-3-(2-(phenyldithio)ethyl)imidazolium, which simultaneously possesses an imidazolium ring catalytic active center, a thermally hindered urea bond, a temperature-responsive dynamic disulfide bond, and an intramolecular hydrogen bond unit. Precise control of catalytic activity is achieved through the synergistic effect of these triple dynamic bonds. The catalyst exhibits excellent storage stability at room temperature, rapid curing at activation temperature, and is free of metal ions. The cured epoxy resin exhibits good dielectric properties. This invention's catalyst achieves a balance between excellent latency and rapid curing performance through the synergistic control of these triple dynamic bonds. It possesses excellent dielectric and mechanical properties, can be compounded with various curing agents, and its preparation method is simple and easy for industrial production.

The application discloses a method for preparing a composite sulfur-based catalyst from waste nickel-cobalt-manganese ternary material and application thereof, and belongs to the field of lithium-oxygen battery catalysts. The method comprises the following steps: (1) dispersing waste ternary positive electrode powder in an aqueous solution of an organic acid to obtain a dispersion liquid, heating, adding an aqueous hydrogen peroxide solution, stirring, and performing suction filtration to obtain a leaching solution; (2) mixing thiourea, a surfactant and the leaching solution to obtain a reaction liquid; and (3) placing the reaction liquid and carbon cloth in a sealed container, reacting, cleaning, and drying to obtain a composite sulfur-based catalyst. The composite sulfide of the three transition metals (Ni, Co and Mn) recovered by the method has a catalytic effect on the charging process of a lithium-oxygen battery, and can greatly improve energy efficiency.

The invention provides a preparation method of 2-acrylic acid 2-(2-naphthalenethio) ethyl ester, which comprises the following steps: (1) adding 2-thionaphthol, a first reactant and a catalyst into a first solvent, reacting at 110-140 DEG C for 4-10 hours, and washing with water to obtain 2-naphthyl sulfide ethanol; and (2) adding 2-naphthyl sulfide ethanol and a reaction aid into a second solvent, dropwise adding a second reactant, and reacting at 0-30 DEG C for 2-10 hours to obtain the 2-naphthyl sulfide ethanol, wherein the first reactant is 2-halogenated ethanol, ethylene oxide or ethylene carbonate and derivatives thereof; the second reactant is acryloyl chloride, alpha-methacryloyl chloride or a mixture of acrylic acid and phosphorus oxychloride. The preparation process is safe and simple, the cost is low, the reaction conditions are mild, the reaction polymerization can be effectively controlled, the post-treatment flow is simple, and industrialization is easy.

This positive electrode mixture contains a conductive auxiliary agent which is a carbon material, a sulfur-based active material, and a sulfide solid electrolyte. A relaxation time T1 derived by 7Li-NMR is longer than 0.23 s and shorter than 0.41 s.

The invention provides an indole compound and a solar cell. The indole compound has a structural formula as shown in a formula (I). At least one of R1-R7 has a structure as shown in a formula (Hy1): L1 is any one of substituted or unsubstituted C6-C30 arylene, substituted or unsubstituted C3-C30 heteroarylene, substituted or unsubstituted C1-C30 alkylene, substituted or unsubstituted C1-C30 alkyleneoxy and substituted or unsubstituted C1-C30 alkylenesulfenyl, and R8 is any one of a phosphate group, a carboxylic acid group and a sulfonic acid group; when R1-R7 do not represent the structure represented by formula (Hy1), R1-R7 represent the structure represented by formula (Hy1); a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C1-C30 alkoxy group, a substituted or unsubstituted C1-C30 alkylthio group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C6-C30 arylamino group, a substituted or unsubstituted C3-C30 heteroaryl group, a substituted or unsubstituted C3-C30 heteroarylamino group, a substituted or unsubstituted C3-, each independently selected from hydrogen, halogen, nitro, hydroxyl, substituted or unsubstituted C1-C30 alkyl group, substituted or unsubstituted C1-C30 alkoxy group, substituted or unsubstituted C1-C30 alkylthio group, substituted or unsubstituted C6-C30 aryl group, substituted or unsubstituted C3-C30 heteroarylamino group, substituted or unsubstituted C3- and C12 cycloalkyl is selected from any one of C12 cycloalkyl.

The present application relates to a process for the preparation of pyroxasulfone comprising reacting 3-[(5-difluoromethoxy-1-methyl-3-trifluoromethylpyrazol-4-yl) methylthio]-4, 5-dihydro-5, 5-dimethylisoxazole with hydrogen peroxide in the presence of a metal catalyst wherein the solvent comprises at least one carbonate and water.

The invention relates to cyclotrithio-tri (2-mercaptoethylthio) mercaptan as shown in a formula I and a preparation method and application thereof. A two-step method of thio reaction and nucleophilic substitution is adopted. In the step I, thiourea is used as a sulfur source, epoxy atoms in trioxymethylene are replaced by sulfur atoms one by one under the condition of strong acid, and 1, 3, 5-trithiacyclohexane is generated. In the nucleophilic reaction of acid catalytic activation in the step II, 1, 3, 5-trithioxane and Lewis acid are subjected to coordination complexation firstly, one sulfydryl in dithiol serves as a nucleophilic reagent to attack an electrophilic carbon center of a ring-opening intermediate, a new C-S bond is formed, and a linear intermediate containing sulfydryl is generated; according to the process, three thiol groups are introduced in sequence step by step, and sulfur alkylation substitution is completed. The obtained product has the characteristics of high purity, high light transmittance and large refractive index, and can be used for preparing optical materials with ultrahigh refractive index and high light transmittance.

The application provides an electrolyte and a battery comprising the electrolyte, wherein the electrolyte comprises a sulfuryl bipyridine compound as a first additive, the first additive has a lower LUMO orbital and a higher HOMO orbital, is easy to be oxidized and reduced, and generates an interface film on the surface of the positive and negative electrodes, the interface film has the characteristics of high inorganic component content, high stability, and rich in S atoms and N atoms, can improve the transmission efficiency of lithium ions, and thus can improve the cycle performance of the battery; meanwhile, the first additive and the pyridine derivative which has formed a film are easy to have a polymerization reaction under the limit working condition of thermal shock, delay the short circuit of the positive and negative electrodes, block the aggravation of the side reaction, and effectively improve the thermal shock performance.

Compositions including zinc salts of sulfur-based accelerators, combinations of zinc salts of sulfur-based accelerators, and golf ball cores made from such compositions are disclosed. The type and concentration of components in the composition affect the properties of cores made therefrom, including, for example, coefficient of restitution and compression, and, thus, can be used to produce golf balls having desirable performance characteristics.

The present invention addresses the problem of providing a light-emitting material which has a large band gap and exhibits thermally activated delayed fluorescence, and provides a fused ring compound which is characterized by being represented by general formula (1). Each R independently represents hydrogen or is selected from the group consisting of an alkyl group having 1-10 carbon atoms, an alkoxy group having 1-10 carbon atoms, an alkylthio group having 1-10 carbon atoms, an alkylamino group having 1-10 carbon atoms, an acyl group having 2-10 carbon atoms, an aralkyl group having 7-20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6-30 carbon atoms, and a substituted or unsubstituted aromatic hydrocarbon group having 3-3 carbon atoms and a monovalent substituent in the 30 aromatic 6-membered heterocyclic group and adjacent substituents may be integrated to form a ring.

The invention relates to the technical field of carbon monoxide catalysts, in particular to a water-resistant sulfur-resistant Pt-based catalyst and a preparation method thereof. The catalyst is prepared by the method. The method comprises the following steps: S1, preparing a CZ carrier; step S2, loading an active component Pt; s3, doping an auxiliary agent lanthanide oxide to obtain the sulfur-resistant Pt-based catalyst, and S4, performing hydrophobic modification to obtain the water-resistant and sulfur-resistant Pt-based catalyst containing the hydrophobic layer. According to the present invention, the water-resistant and sulfur-resistant Pt-based catalyst resistant to sulfur dioxide and water vapor can be prepared, and the active component Pt in the catalyst is uniformly and firmly combined on the CZ carrier so as to solve the problem of catalytic activity reduction caused by Pt nano-particle migration and agglomeration under the gas flow impact effect of the steel plant high-temperature sintering flue gas.

The present embodiment relates to a manufacturing method of a laminate and the like, and the manufacturing method of the laminate includes: a preparation step of preparing a processing object, the processing object being a laminate before processing provided with a light shielding film, and a carbonic acid water cleaning step of preparing a cleaned laminate by applying a carbonic acid water cleaning process of applying ultraviolet rays and carbonic acid water to the processing object; wherein the light shielding film contains a transition metal, and further contains oxygen, nitrogen, or carbon, the laminate has a residual ion content determined by ion chromatography, the residual ions include a sulfur-based ion and a nitric acid-based ion, the content of the sulfur-based ion is greater than 0 ng / cm 2 and equal to or less than 0.1 ng / cm 2 , the content of the nitric acid-based ion is greater than 0 ng / cm 2 and equal to or less than 0.1 ng / cm 2 . The present embodiment can minimize the performance variation of the laminate, remove particles and the like existing on the outer surface or surface of the laminate, and effectively suppress unexpected haze generated in the exposure process.

The invention relates to a composite comprising at least one reinforcing element having a surface comprising a copper-zinc alloy, said reinforcing element being embedded in an elastomeric composition based on at least one diene elastomer, a reinforcing filler, a sulfur-based crosslinking system comprising a metal oxide, stearic acid or one of its derivatives and a vulcanization accelerator, and a phenol-aldehyde resin based on: - at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functions in meta positions relative to each other, the two ortho positions of at least one of the hydroxyl functions being unsubstituted, and - at least one dialdehyde compound comprising two aldehyde functions, in which the phenol-aldehyde resin content ranges from 0.5 to 2 parts per million, and the mass ratio of metal oxide to stearic acid or one of its derivatives is greater than or equal to 8.

The invention relates to a polyamide composition as well as a preparation method and application thereof. The polyamide composition is prepared from the following components in parts by weight: 77 to 97 parts of polyamide resin, 3 to 23 parts of a toughening agent, 0.08 to 0.6 part of an antioxidant A, 0.08 to 0.6 part of an antioxidant B and 0.08 to 0.6 part of a copper salt heat stabilizer. The antioxidant A is a sulfur-containing antioxidant, and the sulfur-containing antioxidant has a thiocarbonyl thio group (-C (= S)-S-); the antioxidant B comprises a phosphite ester antioxidant and / or a hindered phenol antioxidant. According to the toughened polyamide composition, the sulfur-containing antioxidant with thiocarbonyl sulfenyl is introduced and is matched with the phosphite antioxidant and / or the hindered phenol antioxidant and the copper salt heat stabilizer, so that the thermo-oxidative aging resistance of the toughened polyamide composition is jointly improved.

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.

A method for preparing N-phenyl-N-trichloromethylthio phenyl sulfonamide by one-pot method, organic solvent, aniline and catalyst are added to phenylsulfonyl chloride, then slow addition of acid binding agent, incubation for 1-4 h to obtain a reaction solution containing intermediate N-phenyl phenyl sulfonamide; the system is cooled to 0-20℃, slow addition of per-chloromethylthio alcohol, after the end of feeding, continue to react for 1-4 h; then add water to separate the phases, add appropriate amount of water in the organic phase to distill the organic solvent, filter to obtain N-phenyl-N-trichloromethylthio phenyl sulfonamide. The method uses organic solvent as solvent, adopts two-step reaction one-pot method, the process is simple, improves the reaction conversion rate, effectively reduces the generation of by-products, the yield of the product is high, and the quality is good. The used organic solvent and acid binding agent can be recycled and used, which reduces the production cost and greatly reduces the three wastes, and is suitable for industrial production.

The utility model discloses a kind of sulfur autotrophy denitrification nitrogen-removal fluidized bed systems, relate to wastewater treatment technical field.The utility model includes the nitrogen-removal fluidized pool with first water inlet and first water outlet, the nitrogen-removal fluidized pool includes the fluidization chamber and flocculation chamber separated by partition, the lower portion of fluidization chamber and flocculation chamber is communicated, fluidization chamber and flocculation chamber are respectively provided with stirring mechanism, the upper portion of fluidization chamber is with the first water inlet and first dosing pipe being communicated with its inner cavity, the upper portion of flocculation chamber is with first water outlet and second dosing pipe, the first dosing pipe is set to the side adjacent to first water inlet, second dosing pipe is set to the side adjacent to partition, first water outlet is set to the side far away, flocculation chamber upper portion, first water outlet below is set to cover the first filter mechanism of its entire cross section.The lower portion of fluidization chamber and flocculation chamber in the utility model is provided with sulfur-based powder filler layer, and nitrate nitrogen and nitrite nitrogen in wastewater can be removed.

A positive electrode mixture comprising: a conductive additive that is a carbon material; a sulfur-based active material; and a solid electrolyte, wherein the solid electrolyte has diffraction peaks at 2θ = 25.7 ± 0.5° and 30.2 ± 0.5° in powder X-ray diffraction using CuKα radiation, and comprises an anion A having an ionic radius of 1.75 Å to 2.00 Å, and at least one of an anion B having an ionic radius of less than 1.75 Å and an anion C having an ionic radius of greater than 2.00 Å.

The application discloses a multi-sulfur-based heavy metal removal agent for steel plant ash washing wastewater, a preparation method thereof and a method for treating ash washing wastewater by using the same, and high-purity potassium chloride is produced by using high-salt solid waste ash generated by a steel enterprise. Meanwhile, based on the characteristics of the high-salt solid waste ash, such as high thallium, ammonia nitrogen and sulfate radical concentration in the water washing wastewater, a deep thallium removal idea based on weak reduction and complexation breaking, same ion effect precipitation and chelation thallium removal is first proposed, the multi-sulfur-based heavy metal removal agent is used to realize deep removal of thallium in the high-salt wastewater, and combined with the characteristics of the sintering flue gas purification and acid wastewater containing a large amount of sulfite ions and low acidity, the multi-sulfur-based heavy metal removal agent is used for removing sulfur, removing ammonia nitrogen and removing thallium in the ash washing wastewater, and the countercurrent evaporation and potassium and sodium separation are used for the synergistic effect, so that the collaborative treatment and resource utilization of the high-salt solid waste ash and the acid wastewater of the steel plant are realized, and the quality of the recovered potassium salt is greatly improved. Meanwhile, the technical scheme provided by the application also has the advantages of simple process conditions, low energy consumption, no wastewater discharge and the like.

Compounds of Formula I,are provided. In Formula I, M is Pd or Pt; each of X1 to X14 is C or N; one of Z1 and Z2 is C and the other is N; Y is selected from O, S, Se, N*R, CRR′, SiRR′, or GeRR′; K1 is a direct bond, O, or S; each R, R′, RA, RB, RC, and RD is independently hydrogen or a substituent; at least one of R, R′, RA, RB, RC, or RD is a substituent R*; and (i) R* comprises a 5-membered or 6-membered heterocyclic ring, or (ii) R* comprises Formula Ia:Formula Ia;wherein each of RY and RZ independently represents mono to the maximum allowable substitution, or no substitution;R1, R2, R3, R4, RY and RZ is independently hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, germyl, boryl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, boryl, selenyl, and combinations thereof;wherein at least one of R1, R2, R3, and R4 is not hydrogen. Formulations, OLEDs, and consumer products including the compound are also provided.

The present invention relates to a sulfur-based boron trifluoride salt electrolyte containing an unsaturated heterocycle, a preparation method therefor and the use thereof. The electrolyte comprises a boron trifluoride salt represented by general formula I as follows, wherein R' represents an unsaturated heterocycle at least containing one heteroatom and at least containing one unsaturated bond; M is a metal cation; E1 and E2 are independently nonexistent, a group, a chain structure or a ring-containing structure; and R is a substituent. The boron trifluoride salt in the present application can be used as an additive and also as a salt in an electrolyte, and a polymerizable monomer can also be used as a single-ion conductor polymer electrolyte and a polymer skeleton after polymerization. The boron trifluoride salt provided in the present application can be applied to a liquid battery, a solid-liquid hybrid battery, a semi-solid-state battery, a gel battery, a quasi-solid-state battery and an all-solid-state battery, and helps to improve the energy density, cycle stability and service life of a battery. Moreover, the boron trifluoride salt has a low raw material price, a simple synthesis process and good economic benefit.

This invention provides a non-aqueous electrolyte energy storage element and energy storage device equipped with a positive electrode containing a sulfur-based active material, which have a large discharge capacity during charge-discharge cycles, and a method for using a non-aqueous electrolyte energy storage element equipped with a positive electrode containing a sulfur-based active material that can increase the discharge capacity during charge-discharge cycles. [Solution] A non-aqueous electrolyte energy storage element according to one aspect of the present invention comprises a positive electrode containing a sulfur-based active material and a non-aqueous electrolyte containing a cyclic carbonate and a fluorinated carboxylic acid ester, wherein the upper limit charge potential of the positive electrode is 3.1V vs. Li / Li + More than 3.3V vs.Li / Li + The following applies:

This positive electrode mixture contains a carbon material, a sulfur-based active material, and an ion conductor containing lithium atoms, phosphorus atoms and halogen atoms, and has diffraction peaks at 2θ = 29.3 ± 0.5° and 2θ = 34.0 ± 0.5° according to X-ray powder diffraction using CuKα radiation.

The application relates to a preparation method of a mesotrione intermediate. S1, 3-chloro-2-methyl aniline, hydrochloric acid and pure water are placed in a reaction kettle, stirring, cooling, dropwise addition of a NaNO2 solution, after dropwise addition is completed, temperature control is carried out, CH3SNa aqueous solution is added, after dropwise addition is completed, slow temperature rising is carried out, and reaction is continuously carried out for 8 hours; extraction, water washing and distillation are sequentially carried out, and 1-chloro-2-methyl benzyl sulfide is obtained; S2, under the atmosphere of nitrogen, formylation reagent is added into a reaction kettle under the condition of 0-10 DEG C, a catalyst is dropwise added and stirring is carried out, 1-chloro-2-methyl benzyl sulfide is dropwise added, temperature rising is carried out, and 2-chloro-3-methyl-4-methylthio benzaldehyde is obtained through post-treatment; S3, under the atmosphere of nitrogen, methanol, 2-chloro-3-methyl-4-methylthio benzaldehyde and sodium tungstate dihydrate are added into a reaction kettle, hydrogen peroxide is dropwise added, the reaction temperature is controlled, and reaction is carried out, and the mesotrione intermediate is obtained through post-treatment.

The pigment of the present application is a compound represented by the following general formula (1) or the following general formula (2). (In the following formulae, M is Sn or Ge, X is C or N, R1 is an alkyl group or a phenyl group, Y1 and Y2 are each hydrogen, a halogen group, a methyl group, an alkoxy group, a phenyl group, a diphenyl amido group, a thio phenyl group, or a phenyl ethynyl group, Z is represented by a single bond or the following formula (3). R2 is an alkyl group or a phenyl group.)

Disclosed is a curable composition for use in sealing of an organic electroluminescent element part. The curable composition contains one or more compounds A that are represented by general formula (1) and have a point group of Cs or C2v, and a (meth)acrylic acid ester compound that has a molecular weight of 500 or less. At least one of the compounds A is a compound in which at least one of Ra to Rh is a (meth)acryloyl thioxy group. Also disclosed are: a cured product which is obtained from this composition; an OLED display element; and a method for sealing an OLED element part. In the formula, Ra to Rh each represent a hydrogen atom, an alkylsulfanyl group having 1 to 10 carbon atoms, or a (meth)acryloyl thioxy group.

This invention discloses a method for preparing sulindac. The method involves first performing an Arbuzov reaction and a Wittig-Horner reaction sequentially to obtain 6-fluoro-3-(p-methylthiobenzyl)-2-methyl-1H-indene. 6-fluoro-3-(p-methylthiobenzyl)-2-methyl-1H-indene undergoes a condensation dehydration reaction with glyoxylic acid, followed by double bond rearrangement under acidic conditions to obtain (Z)-5-fluoro-2-methyl-1-(p-methylthiobenzyl)-1H-indene-3-acetic acid. Finally, it undergoes a single oxidation reaction with an oxidant to obtain sulindac. The raw materials and excipients used in this invention are readily available, and the entire reaction route is short, the reaction conditions are mild, the operation is safe and simple, the yield is high, the purity is high, the production cost is low, and the emissions of waste are minimal, conforming to green industrial production standards. The total yield of the obtained sulindac product is over 75%, which is conducive to industrial production.