50 results about "Butylamine" patented technology

The invention belongs to the field of cultural relic protection, and relates to a cultural relic surface accessible acidity determination method, which comprises: 1) placing a cultural relic sample using palm leaves as a carrier in a chemical adsorption device, and pre-treating in an inert gas atmosphere; (2) after pretreatment is completed, mixed gas formed by n-butylamine and inert gas is introduced into a chemical adsorption device, and specific chemical adsorption is carried out through the n-butylamine and accessible acid sites on the surface of the cultural relic sample; (3) after adsorption is completed, heating the inner cavity of the chemical adsorption device at a constant rate, desorbing n-butylamine, and recording a desorption signal at the same time; and 4) calculating the acid site concentration according to the desorption signal peak area obtained in the step 3), and determining the acid intensity according to the peak position distribution.The invention provides the cultural relic surface accessible acidity determination method with good specificity and high sensitivity.

The invention belongs to the technical field of tert-butylamine preparation, and particularly relates to a preparation process for synthesizing tert-butylamine by adopting methyl tert-butyl ether. The preparation process comprises the following steps: preparing calcium alginate microspheres; preparing an SAPO precursor solution; performing composite crystallization; preparing an SAPO-11 carrier; preparing an ammonium type SAPO-11 carrier; preparing a metal supported catalyst; preparing an activated catalyst; methyl tert-butyl ether and liquid ammonia are used as raw materials, and tert-butylamine is prepared under the catalysis of an activated catalyst. According to the preparation process for synthesizing the tert-butylamine by adopting the methyl tert-butyl ether, the process of catalytically synthesizing the tert-butylamine by taking the methyl tert-butyl ether and the ammonia as raw materials follows an acid catalytic cracking nucleophilic addition coupling mechanism, and the prepared hierarchical pore CuZn / HSAPO11 catalyst remarkably reduces the reaction activation energy through the synergistic effect of B acid, L acid and metal active sites; high-activity and high-selectivity catalytic conversion at low temperature is realized, and high-purity tert-butylamine is prepared.

The application discloses a device and method for preparing tert-butylamine by directly ammoniating isobutene, which comprises sequentially connected raw material preparation unit, reaction separation unit, rectification separation unit and circulating recovery unit; the raw material preparation unit is used for storing, mixing and heating raw materials; the reaction separation unit is used for pressurizing reaction of the raw materials in the raw material preparation unit and gas-liquid separation of products; the rectification separation unit is used for rectification separation of liquid-phase products separated by the reaction separation unit and recovery of part of unreacted raw materials; and the circulating recovery unit is used for rectification recovery of part of raw materials of gas-phase products separated by the reaction separation unit. The application has the characteristics of low overall equipment investment, high energy utilization rate, simple product separation and purification, perfect overall device design and small environmental pollution.

The application belongs to the technical field of pharmaceutical chemistry synthesis, and specifically discloses a preparation method of oseltamivir and a phosphate thereof and an intermediate thereof, which comprises the following steps: (1) a compound of formula VII is reacted with VIII under the action of a base in a solvent to obtain an intermediate of formula VI, and then the intermediate of formula VI is reacted under the action of a strong base at high temperature to obtain formula V; (2) formula V is subjected to ring-opening reaction with tert-butylamine in a solvent under the catalysis of a Lewis acid to obtain formula IV; (3) formula IV is reacted with an acetylating agent in a solvent under the action of a base to obtain formula III; (4) formula III is reacted under the action of an acid at a certain temperature to obtain formula II; and (5) formula II is subjected to salt formation with phosphoric acid in a solvent to obtain oseltamivir. The preparation method has the characteristics of simple operation, low cost, high yield, high optical purity of the product, stable process and the like, and is suitable for industrial production.

A zeolite having a ferrierite framework structure produced using one or more of n-propylamine, n-butylamine, isobutylamine, and n-pentylamine as a structure directing agent.

The invention provides an engineering bacterium for producing spermidine and a preparation method of the engineering bacterium, and relates to the field of genetic engineering. According to the invention, arginine decarboxylase, aspartate kinase, aspartate-semialdehyde dehydrogenase, spermidine efflux protein (MdtI / MdtJ), carboxylaminopropyl agmatine dehydrogenase (CAPADH), carboxylaminopropyl agmatine decarboxylase (CAPADC) and aminopropyl agmatine urea hydrolase (APAUH) are subjected to overexpression in escherichia coli by using a gene engineering technology, and then the escherichia coli is subjected to enzyme deactivation, so that the escherichia coli is obtained. The genetically engineered bacterium capable of producing the spermidine can be obtained by simultaneously knocking out a spermidine transport system (PotBCAD), a spermidine-N-acetyltransferase (spermidine-N-acetyltransferase) and a homoserine dehydrogenase (homoserine dehydrogenase), so that the genetically engineered bacterium capable of producing the spermidine can be obtained. The engineering bacterium greatly reduces the production cost of spermidine, has a wide application prospect, and lays a foundation for green production of spermidine.

The invention discloses a chloride ion-doped micron-sized transverse-size porous CuO nanosheet and a preparation method thereof, and belongs to the technical field of micron / nano material preparation and electro-catalysis CO2 reduction. According to the preparation method, copper acetate is taken as a copper source, potassium chloride is taken as a chlorine source, organic alkali n-butylamine is taken as an alkali source, and a homogeneous precipitation-heat treatment method is adopted, so that the chlorine ion doped micron-sized transverse-size porous CuO nanosheet is prepared; the method is simple in process, low in cost, good in repeatability and easy to amplify production, when the product is used for electrocatalytic CO2 reduction, CO2 is efficiently catalyzed to be converted into high-added-value industrial raw material ethylene, and the product has wide application prospects in the fields of energy conversion and carbon dioxide resource utilization.

To provide a bee repellent in order to prevent damage to honeybees, which are not the intended target of pesticides applied to crops or pesticides used to control carnivorous bees such as hornets and paper wasps. [Solution] A bee repellent comprising one or more components selected from tetradecane, furfuryl alcohol, cinnamyl alcohol, cinnamaldehyde, 3-methyl-2-butenal, methyl cinnamate, geranyl formate, allyl cyclohexanepropionate, isoquinoline, borneol, carvacrol, δ-dodecalactone, β-ionone, quinoline, butylamine, and citronella oil as active ingredients.

The invention relates to a production method for improving photo-thermal stability of a chloromethyl ethyl ether industrial product, and belongs to the technical field of chloromethyl ethyl ether processing.The preparation of an intermediate 1 comprises the steps that 80-120 mL of ethyl alcohol, 20-25 g of 3, 5-di-tert-butyl-4-hydroxybenzaldehyde and 6-10 g of n-butylamine are added into a 250 mL four-opening bottle provided with a backflow water diversion device, the temperature is increased to 60 DEG C, a reaction is carried out for 1 h, and an intermediate 2 is obtained; cooling to 0 DEG C by adopting an ice salt bath, adding 1-3g of potassium borohydride in batches, keeping the temperature at 0 DEG C, continuing to react for 0.5 hour, and adding a 5% citric acid aqueous solution to adjust the pH value to 2.0-3.0; the special photo-thermal stabilizer is synthesized and compounded with the epoxidized soybean oil, a single stabilizer and a special formula free of chloromethyl ether are generally adopted in the traditional method, the photo-thermal stabilizer containing the hindered phenol and piperazine structure is synthesized by the method, synergistic protection of light shielding, thermal stability and acid capture is achieved after compounding, and the product performance is remarkably improved; and the purity retention rate is 95-97% after 168h of ultraviolet aging.

The application discloses a kind of lead sulfide quantum dots with adjustable light absorption range, preparation method and application thereof.Sulfur source is dissolved in short-chain amine solvent, lead source and organic small molecule ligand solution dissolved in organic polar solvent are added, and then sulfur source solution is added, and the reaction is stirred at a temperature of 0-100 DEG C to obtain a reaction product;anti-solvent is added, and the product is washed and dried to obtain lead sulfide quantum dots with uniform particle size and adjustable light absorption range.By adjusting the content of precursor, reaction solvent and temperature, and under the action of n-butylamine, PbS quantum dots with adjustable light absorption range are directly synthesized in one step, which solves the limitations of small light absorption range and low yield of quantum dot ink direct synthesis, and obtains quantum dots with a light absorption range of 1000nm-2000nm wavelength.The synthesized quantum dots have achieved preliminary application in photoelectric detector.

The application discloses a drying device for preparing buthionine, belongs to the technical field of buthionine preparation, and comprises an operating mechanism, a mixing mechanism for preparing raw materials is arranged on the operating mechanism, and a drying mechanism for drying solvents is arranged on the operating mechanism. When the lower pressing frame is pressed down, 2.6-diisopropyl-4-phenoxyphenyl isothiocyanate and toluene are mixed and then dropped into t-butylamine, and finally the three are mixed by standing, meanwhile, the intermediate product dried in the last preparation process is drawn into a crystallization box for crystallization; when the lower pressing frame is lifted up, the prepared raw materials enter a drying bottle for drying, and the buthionine prepared in the last preparation process is taken out, so that the application has high automation degree and good continuity; when the drying mechanism dries the drying bottle through a heater, the drying bottle rotates at the same time, so that the heating area is increased and uniform drying is realized.

The invention provides a synthesis method of 1-tert-butyl-3-ethyl carbodiimide, which comprises the following steps of: synthesizing 1-tert-butyl-3-ethyl carbodiimide; the method is mild in reaction condition, simple in step and environment-friendly, and high-yield and high-purity synthesis of a target product can be realized. The synthesis method comprises the following steps: (1) carrying out an addition reaction on ethyl isothiocyanate and tert-butylamine in an organic solvent I at 30-60 DEG C to obtain ethyl tert-butyl thiourea; the organic solvent I is selected from one or more of petroleum ether, normal hexane and normal heptane; (2) carrying out oxidative desulfurization reaction on the ethyl tert-butyl thiourea and a sodium hypochlorite aqueous solution with the concentration of 10-15wt% in an organic solvent II at the temperature of 0-10 DEG C; removing sulfur generated in the reaction, and then purifying the feed liquid to obtain 1-tert-butyl-3-ethylcarbodiimide; and the organic solvent II is selected from halogenated hydrocarbon.

The application discloses a battery chip back electrode passivation method and relates to the technical field of battery chips, which comprises the following steps: placing a battery chip in a reaction cavity, controlling the temperature and back pressure of the reaction cavity, pulse-injecting a steric slow-release precursor solution prepared by the coordination reaction of trimethylaluminum and tert-butylamine, performing chemical adsorption, introducing double-frequency resonance cascade working gas after purging, starting a high-frequency radio frequency power supply to perform processing, forming an initial-state sub-monolayer, keeping the high-frequency radio frequency power supply on, superimposing a low-frequency radio frequency power supply, controlling the low-frequency power by linear ramping, converting the initial-state sub-monolayer into a dense barrier layer by physical bombardment, shutting down the low-frequency radio frequency power supply, reducing the high-frequency radio frequency power supply to a low-power state, keeping the double-frequency resonance cascade working gas purging, and performing by-product desorption overflow processing. The application takes into account low-damage protection of a sensitive interface and high density of a film layer in a single vacuum process, effectively removes film layer impurities, and improves the corrosion resistance and long-term reliability of the battery chip.

The invention provides a method for preparing an adhesive by aminating polyvinyl chloride under a non-catalytic photo-thermal action, which is characterized by comprising the following steps of: putting a polyvinyl chloride polymer or a consumed polyvinyl chloride plastic waste material into a photo-thermal reaction system, and reacting under the condition of no additional catalyst; and reacting with an amination reagent (such as butylamine, aniline, imidazole and other organic amines) at a low temperature (lower than 80 DEG C) in a green solvent under the auxiliary action of illumination for 4-18 hours to directly generate the amination modified PVC-based adhesive. The adhesive prepared by the method can be used for bonding wood building materials, glass, resin and metal plates, and has good bonding strength, water resistance, weather resistance and flame retardance. Through the non-catalytic photo-thermal synergistic effect, the direct conversion from the polyvinyl chloride waste to the high-added-value adhesive is realized in one step, the process conditions are mild, the operation is simple and convenient, a new path is provided for green recovery and value-added utilization of polyvinyl chloride, and the method has good industrial application potential.

The invention discloses a synthesis method of 3-hydroxyazetidine hydrochloride, and belongs to the technical field of organic synthesis. According to the method, tert-butylamine and epichlorohydrin are used as starting raw materials, and a target product is prepared through three-step reaction of cyclization, acetylation and deacetylation in sequence. The method is characterized in that in the acetylation reaction step, a step-by-step strategy that hydroxyl is subjected to monoacetylation at low temperature, and then tert-butyl acetylation is carried out by heating under the conditions that Lewis acid is used for catalysis and sodium hydrosulfite is used as a binding agent is adopted; the binding agent can effectively capture fallen tert-butyl, and side reaction between the fallen tert-butyl and the intermediate is avoided. By optimizing the synthesis route and the purification process, the problems of high raw material cost, high hydrogenation deprotection safety risk, more side reactions, difficulty in intermediate purification, poor product crystallization effect and the like in the prior art are solved. The obtained product is high in purity (greater than or equal to 98%) and good in crystal form, and the whole process is good in safety, simple and convenient to operate and more suitable for industrial production.

The application provides a MWW structure molecular sieve and a preparation method and application thereof. The preparation method comprises the following steps: mixing an aluminum source, water, an alkali source, a first template agent, a second template agent, a silicon source and seeds to form a gel, and crystallizing the gel to obtain the MWW structure molecular sieve; wherein the first template agent comprises cyclohexylamine, and the second template agent comprises at least one of diisopropylamine, di-n-butylamine, diisobutylamine, 1,4-diazabicyclo[2.2.2]octane, 1,6-hexanediamine and N,N,N,N-tetramethyl-1,6-hexanediamine. The application further provides the MWW structure molecular sieve prepared by the above preparation method and the application of the MWW structure molecular sieve. According to the application, the MWW structure molecular sieve can be directly synthesized without using hexamethyleneimine, piperidine and homopiperazine by the method of seed and two template agents assisting crystallization.

The application discloses a method for synthesizing molecular sieve by using rice hull as a silicon source and a template, and comprises the following steps: (1) soaking rice hull powder in a hydrochloric acid solution, then heating the rice hull powder in an oil bath to remove impurities, then washing the obtained suspension with deionized water until neutral, and then drying the suspension in an oven; (2) grinding and mixing the material obtained in the step (1), a structure directing agent, NaAlO2 and NaOH uniformly, and then crystallizing, wherein the structure directing agent is tetrapropylammonium hydroxide and / or n-butylamine; (3) high-temperature calcining the material obtained in the step (2) to remove organic cellulose and template components, and thus the molecular sieve is obtained. The application effectively solves the problems of large wastewater discharge and high cost in the preparation process of traditional molecular sieve.

The invention relates to a wear-resistant artificial leather composition with excellent flame retardance and a preparation method thereof. The wear-resistant artificial leather composition comprises artificial leather and a flame-retardant layer, the artificial leather is prepared from the following components in parts by mass: 10 to 80 parts of volcanic ash, 23 to 30 parts of ceramic micro powder, 8 to 15 parts of sodium bicarbonate, 3 to 5 parts of flame retardant, 10 to 20 parts of hydrogenated rosin glyceride, 20 to 30 parts of tannic acid, 15 to 20 parts of n-butylamine, 30 to 50 parts of hexamethylene diisocyanate, 1 to 3 parts of bacteriostatic agent, 15 to 35 parts of thermosetting resin, 10 to 25 parts of red phosphorus, 7 to 15 parts of zinc stearate and 15 to 20 parts of flame-retardant fiber. The flame-retardant layer is formed by coating the surface of the artificial leather with a flame-retardant coating, and the flame-retardant coating comprises a flame-retardant nanofiller, ethylene propylene diene monomer, polyvinyl chloride, an acrylic emulsion, ammonium polyphosphate, dipentaerythritol and melamine. The flame retardant artificial leather has the effect of improving the flame retardant property of the artificial leather.

This invention relates to the field of catalysis, and discloses a bilayer gradient acidic core-shell molecular sieve catalyst, its preparation method, and its applications. The bilayer gradient acidic core-shell molecular sieve catalyst comprises a ZSM-11 core layer and a BEA shell layer covering its surface; the acid strength of the ZSM-11 core layer is 0.40–1.20 mmol / g, and its average thickness is 0.5–3 μm; the acid strength of the BEA shell layer is 0.10–0.40 mmol / g, and its average thickness is 20–300 nm. This catalyst possesses a bilayer gradient acidic core-shell structure. When applied to the catalytic synthesis of tert-butylamine from isobutylene or its precursors (alcohols / ethers), it can improve single-pass conversion while maintaining high selectivity, and significantly reduce the carbon deposition rate and bed pressure drop growth, achieving long-term stable operation.

The application relates to the field of postharvest preservation of flowers and cut flower vase planting and maintenance technology, in particular to a composite preservative liquid for prolonging the preservation period of cut rhododendron flowers and a preparation method thereof. The method comprises the following steps: taking part of deionized water, sequentially adding trehalose, sucrose and potassium nitrate, stirring and dissolving to obtain a sugar salt water phase; taking part of deionized water, adding citric acid and stirring and dissolving, then adding ferrous sulfate, stirring in the dark to obtain a ferrous salt acidification pre-solution; slowly adding the ferrous salt acidification pre-solution into the sugar salt water phase, mixing under stirring to obtain a composite water phase; dissolving gibberellin in ethanol to prepare a gibberellin mother liquor, and adding the gibberellin mother liquor into the composite water phase; adding diluted sec-butylamine into the obtained solution, stirring and mixing; adding the remaining deionized water to constant volume; filtering and sterilizing the adjusted solution, filling and sealing to obtain the composite preservative liquid. The application can inhibit the reproduction of botrytis cinerea and maintain the good state of cut flowers.

The invention discloses a catalyst for preparing tert-butylamine ethoxyethanol as well as a preparation method and application of the catalyst, and belongs to the technical field of catalysts. The preparation method comprises the following steps: respectively preparing a mixed solution containing 2-aminoterephthalic acid and polyvinylpyrrolidone and a cesium salt solution, mixing the mixed solution with the cesium salt solution, reacting at 120-180 DEG C for 4-16 hours to obtain a catalyst precursor, and calcining the catalyst precursor in an inert atmosphere to obtain the catalyst. The catalyst for preparing the tert-butylamine ethoxyethanol is obtained. The invention develops a heterogeneous catalyst based on a process for synthesizing TBEE through reductive amination of diethylene glycol and tert-butylamine. The catalyst is high in activity, has activity and selectivity comparable to those of a noble metal catalyst, and can realize efficient synthesis of TBEE; the preparation method is simple and has low requirements on reaction equipment; meanwhile, the catalyst is relatively good in stability, can be recycled for dozens of times, and has a good industrial prospect.

The application discloses a method for synthesizing salbutamol sulfate, and belongs to the technical field of organic chemical synthesis. The method comprises the following steps: (1) subjecting methyl salicylate to a Friedel-Crafts acylation reaction to generate an intermediate 1; (2) subjecting the intermediate 1 to a substitution reaction with t-butylamine to generate an intermediate 2; (3) subjecting the intermediate 2 to a reduction reaction to generate an intermediate 3, i.e. the synthesis of salbutamol; and (4) subjecting the salbutamol to salt formation with concentrated sulfuric acid to generate the salbutamol sulfate. The method for synthesizing the salbutamol sulfate has shortened process steps, simple and easily-obtained raw materials, and eliminates multi-step column chromatography, thereby reducing the cost and avoiding high-pressure hydrogenation reaction, so that a high-pressure kettle is not needed, common production equipment can be used, the reaction condition is mild, and the industrialized production is facilitated.

The application discloses a kind of molybdenum bis (dibutyl dithiocarbamate) oxide and preparation method thereof, comprising the following steps: molybdenum trioxide, phase transfer catalyst and water are uniformly mixed, are sent into first-stage mixing reactor, sodium hydrosulfide, sodium thiosulfate and water are uniformly mixed, also are sent into first-stage mixing reactor, and first reaction solution is obtained by reaction;Di-n-butylamine and water are uniformly mixed, are sent into second-stage mixing reactor, carbon disulfide is simultaneously sent, and second reaction solution is obtained by reaction;First reaction solution, second reaction solution are respectively sent into third-stage mixing reactor and are reacted, obtain molybdenum bis (dibutyl dithiocarbamate) oxide solution, solid-liquid separation, drying, obtained immediately.The yield of product obtained by the application is high, the purity is high, the quality is stable, the whole reaction process is continuously carried out in airtight container, there is no gas volatilization, which is conducive to environmental protection, reaction solvent is water, resource consumption is less, can be recycled, clean and environmentally friendly.

The invention provides a flame-retardant resin composition with remoldability and a preparation method thereof. The flame-retardant resin composition with remoldability comprises epoxy resin, a flame retardant, linear dicarboxylic acid and a catalyst. The epoxy resin comprises bisphenol A diglycidyl ether. The flame retardant comprises a dicarboxylic acid structure chain segment and a structure chain segment as shown in a formula (1). The linear dicarboxylic acid is represented by formula (2). The catalyst comprises di-n-butylamine. The ratio of the mole number of the epoxy resin to the total mole number of the flame retardant and the linear dicarboxylic acid is 1: 0.9-1: 1.1. Wherein n is an integer from 4 to 10. Based on high strength, flexibility, remoldability and flame retardance provided by the resin composition, the resin composition disclosed by the invention is suitable for being used as a functional reinforcing material of flexible materials such as fibers or cloth and the like, and is convenient to recycle and reuse so as to adapt to sustainable development of low-carbon, regenerative and cyclic environmental protection.

The application provides a control method of a light component removal device for removing light components in tert-butylamine, comprising the following steps: obtaining a real-time pressure measurement value of a light component removal tower of the light component removal device, a real-time temperature measurement value of a sensitive plate in the light component removal tower, calculating a sensitive plate temperature output value of the sensitive plate according to the real-time pressure measurement value of the light component removal tower, the real-time temperature measurement value of the sensitive plate, a preset pressure of the light component removal tower and a pre-established temperature compensation function; and adjusting a steam flow of a steam input pipeline for inputting steam into a reboiler of the light component removal device according to a comparison result of the sensitive plate temperature output value and a preset temperature of the sensitive plate. The control method of the application helps to improve the situation of light components sliding to the tower kettle, and can improve the stability of the light component removal device and improve the light component removal effect.

The invention relates to a method for catalytic synthesis of tert-butylamine ethoxyethanol (TBEE), and belongs to the technical field of catalytic synthesis of alcohol amine compounds. The method comprises the steps of reactor pretreatment, catalytic amination reaction, condensation separation and rectification purification, and the core lies in the design of series double fixed bed reactors: the front end is filled with a Ni / Al2O3 catalyst, the rear end is filled with a Cu / Al2O3 catalyst, and the temperature between the two reactors is regulated and controlled through a heat exchanger. After pretreatment, tert-butylamine and diethylene glycol are mixed, hydrogen is introduced, the mixture enters a front-end reactor for preliminary conversion after static mixing, then enters a rear-end reactor for deep reaction after temperature adjustment through a heat exchanger, and the product is subjected to condensation gas-liquid separation and rectification purification to obtain the high-purity TBEE. Through function division of activating raw materials by a front-end Ni-based catalyst and inhibiting side reaction by a rear-end Cu-based catalyst, and by combining staged adaptation and stable temperature control of a series reactor, efficient synthesis of TBEE is realized through synergism of all links.

The invention belongs to the technical field of photocatalysis, and particularly relates to a preparation method and application of a multifunctional sulfur-zinc-cadmium photocatalyst. The method comprises the following steps: preparing a sulfur-zinc-cadmium crystal nucleus through a liquid-phase ion exchange method, promoting regrowth of the sulfur-zinc-cadmium crystal nucleus through a molten salt calcination method to obtain a sulfur-zinc-cadmium photocatalyst, and carrying out sulfur ion modification on the surface of the sulfur-zinc-cadmium photocatalyst through a coprecipitation method to obtain sulfur-zinc-cadmium with a sulfur-rich surface. And finally, selectively depositing Pd nano-particles on the high-index crystal face of the sulfur-zinc-cadmium with the sulfur-rich surface through photochemical reduction to obtain the multifunctional sulfur-zinc-cadmium photocatalyst. The catalyst can be used for a reaction system for preparing N-benzylidenebutylamine through benzylamine coupling, preparing hydrogenated benzoin through benzyl alcohol coupling, preparing 2-hydroxymethyl pyrazine through 2-formic acid pyrazine reduction and preparing benzaldehyde and other template micromolecular aromatic compounds through benzyl alcohol oxidation. The catalyst is simple in preparation method and wide in raw material source, can drive reactions such as coupling, reduction and oxidation of small molecular aromatic compounds, and has industrial application prospects.

The invention belongs to the technical field of biomedical materials, and relates to I-type and II-type naphthalimide photosensitizers and a preparation method and application thereof, and the naphthalimide photosensitizers have the following structural formula. The preparation method comprises the following steps: S1, carrying out a heating reaction on 4-bromo-1, 8-naphthalic anhydride and n-butylamine to obtain NI-1; s2, NI-1 and [4-[bis (4-methoxyphenyl) amino] phenyl] boric acid are subjected to a reaction under the action of an XPhos Pd G2 catalyst and a K3PO4 alkali, and NI-OCH3-2O is obtained; and S3, the NI-OCH3-2O and a Lawson reagent are subjected to a heating reaction, and XX is obtained. Compared with the prior art, the preparation method has the advantages that naphthalimide is used as a mother nucleus, a photosensitizer precursor NI-OCH3-2O is obtained through Suzuki coupling reaction and [4-[bis (4-methoxyphenyl) amino] phenyl] boric acid, and finally the photosensitizer NI-OCH3-2S is obtained through carbonyl thiolation. The naphthalimide photosensitizer has relatively strong absorption in a range of 400-700 nm, generates O2 <-> and < 1 > O2 under excitation of red light, can overcome limitation of tumor hypoxia, and has a good photodynamic therapy effect.

The application discloses enoxamacetone diamine salts, a preparation method and application thereof. The stability of enoxamacetone diamine salts (enoxamacetone 1,4-butane diamine salt, enoxamacetone 1,5-pentane diamine salt and enoxamacetone 1,6-hexane diamine salt) is better than that of enoxamacetone and enoxamacetone monoamine salt (for example, enoxamacetone tert-butylamine salt); meanwhile, the weeding activity of the enoxamacetone diamine salt (enoxamacetone ethylenediamine salt, enoxamacetone 1,4-butane diamine salt and enoxamacetone 1,5-pentane diamine salt) is better than that of enoxamacetone tert-butylamine salt, wherein the weeding activity of enoxamacetone 1,5-pentane diamine salt is better than that of enoxamacetone. Most of the enoxamacetone diamine salts have low degradation rate during high-temperature heat storage, are easier to be stored for a long time, have higher melting point than enoxamacetone monoamine salt (for example, enoxamacetone tert-butylamine salt), are more convenient for granulation and crushing, are more convenient for being processed into solid dosage forms such as water dispersible granules as weeding agents, have better physical properties of preparations, and have good commercialization prospect.