39 results about "Isobutyramide" patented technology

The invention is the compounds2-(3,5-bis-trifluoromethyl-phenyl)-N-[6-(1,1-dioxo-1λ6-thiomorpholin-4-yl)-4-o-tolyl-pyridin-3-yl]-N-methyl-isobutyramide and2-(3,5-bis-trifluoromethyl-phenyl)-N-[6-(1,1-dioxo-1λ6-thiomorpholin-4-yl)-4-(4-fluoro-2-methyl-phenyl)-pyridin-3-yl]-N-methyl-isobutyramide.Compounds of the invention are useful in pharmaceutical compositions for the treatment of migraine, rheumatoid arthritis, asthma, bronchial hyperreactivity, inflammatory bowel disease or for the treatment of disorders including Parkinson's disease, anxiety, depression, pain, headache, Alzheimer's disease, multiple sclerosis, edema, allergic rhinitis, Crohn's disease, ocular injury, ocular inflammatory diseases, psychosis, motion sickness, induced vomiting, emesis, urinary incontinence, psychoimmunologic or psychosomatic disorders, cancer, withdrawal symptoms of addictive drugs from opiates or nicotine, traumatic brain injury or benign prostatic hyperplasia.

The invention discloses a method for preparing perfluoro-isobutyronitrile. The method includes carrying out reaction on perfluoro-isobutyryl fluoride and ammonia solution or ammonia gas in water or organic solvents to generate perfluoro-isobutyramide at first; dehydrating the perfluoro-isobutyramide by dehydrating agents to obtain the perfluoro-isobutyronitrile. The method has the advantages of novel raw materials and routes, simplicity in reaction operation, high product yield and low waste gas, wastewater and industrial residue quantities.

The invention discloses a method for preparing heptafluoroisobutyronitrile. According to the method, heptafluoroisobutyronitrile is prepared by taking p-toluenesulfonyl chloride and heptafluoroisobutyramide as raw materials. The preparation method provided by the invention has the advantages of high yield, low cost, basically no three wastes, mild operation conditions and suitability for industrial production.

The RE light transferring agent possessing ecological physiologic feature has the general expression of ReML1(L2)1-3, where, the RE element Re is Eu(III) or Sm(III); the RE element M is Gd(III), La(III) Al(III) orMn(II); L1 is poly-N-vinyl acetamide or poly-N-vinyl isobutyramide; and L2 is acetyl salicylic acid, benzoyl acetone, o-phenanthroline or triphenyl oxyphosphine. The light transferring polyvinyl chloride film containing the light transferring agent consists of the light transferring agent 0.005-0.1 weight portions, polyvinyl chloride 100 weight portions, dispersing medium 100-1000 weight portions and assistant 0-10 weight portions. The light transferring polyvinyl chloride film can absorb 202-330 nm ultraviolet light and emit 380-580 nm bluish violet light and 580-710 nm red orange light, so as to meet the requirement of plant photosynthesis, increase yield of crop and improve quality of crop.

The invention discloses a method and device for continuously preparing heptafluoroisobutyrylamide. The method comprises the steps: carrying out electrolytic fluorination on isobutyric anhydride, carrying out condensation reflux on electrolytic gas to remove hydrogen fluoride, and freezing to collect heptafluoroisobutyryl fluoride; carrying out a reaction on heptafluoroisobutyryl fluoride with an ammonia methanol solution in a spray tower, carrying out reduced pressure distillation after the reaction is finished to obtain a heptafluoroisobutyrylamide crude product, and recrystallizing to obtainthe heptafluoroisobutyrylamide product. The device comprises an electrolysis kettle (1), a reflux condenser (2), a catcher (3), a spray tower (4), a distillation kettle (5) and a distillation condenser (6). The method and the device are simple in process, high in equipment efficiency and easy for industrial production.

The invention discloses a method and device for preparing heptafluoroisobutyronitrile, wherein the method comprises the steps: adding methyl heptafluoroisobutyrate into a reaction kettle, adding an alcoholic solution of ammonia, and controlling the reaction temperature to be lower than 0 DEG C; carrying out a reaction for 2-5 h, heating to 60 DEG C, finishing the reaction when the content of methyl heptafluoroisobutyrate in a reaction solution is less than 0.1%, removing a methanol solvent by vacuum distillation, and removing the vacuum when the content of methanol in the reaction solution inthe reaction kettle is less than 1%; and adding a dimethylformamide / pyridine solvent into the reaction system, controlling the reaction temperature to be lower than 0 DEG C, adding a dehydrating agenttrifluoroacetic anhydride, and collecting heptafluoroisobutyronitrile gas. According to the method, an intermediate heptafluoroisobutyrylamide synthesis step and a step device for preparing heptafluoroisobutyronitrile by dehydrating heptafluoroisobutyrylamide are integrated; transfer of an intermediate heptafluoroisobutyramide is not needed and water washing, extraction, recrystallization and other operations are avoided, so the heptafluoroisobutyronitrile is directly synthesized, the equipment investment is greatly reduced, the operation process is simplified, and the method is suitable forindustrial production.

The present application belongs to the technical field of inorganic chemistry, and particularly relates to a preparation method for perfluoroisobutyronitrile. The method includes the following steps:step 1, in the presence of an organic solvent and an alkaline solution, performing condensation on heptafluoroisobutyramide and p-toluenesulfonyl chloride to obtain heptafluoroisobutyryl p-toluenesulfonate; and step 2, performing a reaction on the heptafluoroisobutyryl p-toluenesulfonate at the temperature of -30 DEG C to 20 DEG C to produce the perfluoroisobutyronitrile and p-toluenesulfonate. The preparation method for the perfluoroisobutyronitrile disclosed by the present application can effectively solve the technical defects that a current method for preparing perfluoroisobutyronitrile has a low yield and high costs, and the generated perfluoroisobutyronitrile is difficult to store in the system.

The invention discloses a method for producing high-purity isobutyramide, and belongs to the field of biological engineering. Isobutyronitrile and deionized water are used as raw materials in the method; under the action of a nitrile hydratase catalyst, the isobutyronitrile and the deionized water undergo hydration reaction to generate isobutyramide; and a high-purity isobutyramide crystal product can be obtained by simply treating the obtained aqueous solution of isobutyramide. The high-purity isobutyramide crystal product can be obtained by simply treating the obtained aqueous solution of isobutyramide, the purity of the product reaches over 99.95 percent, and the product does not contain harmful components such as organic solvent and the like and is particularly applied in the field of medical treatment. The method is mild in reaction conditions and simple in operation; the yield of the product reaches over 99 percent; and the method overcomes the defect of a technology for preparing the isobutyramide by using the reaction of isobutyrylchloride and ammonia, and is simple in preparation process and easy for industrialization.

The invention discloses a particle adsorption agent for indole adsorption and a preparation method thereof. Dihydroxy ketone aldolactol, 5-formylindole, N, N-dimethylformamide, polyvinyl alcohol and melaniline are prepared into a mixed solution B; polyvinyl acetate, N, N-dimethylformamide and 4,6-dichloro-5-pyrimidinecarboxaldehyde are prepared into a mixed solution D; peracetic acid tert-butyl ester, chloroform and isobutyramide are prepared into a mixed solution F; the mixed solution B, the mixed solution D, the mixed solution F, methyl isobutyrate, polyethylene glycol and chloroform are made into a mixed solution H; the mixed solution H is dripped into a polyvinyl alcohol solution with the mass percentage of 6.8 percent to obtain a mixed solution I; the polyvinyl alcohol solution with the mass percentage of 0.9 percent is added into the mixed solution I; stirring is performed for 7 to 8h; then, separation, washing and freeze drying are performed; the particle adsorption agent for indole adsorption can be obtained.

The invention relates to the field of medicine and chemical industry, in particular to a preparation method of thioisobutyramide. In the present invention, isobutyramide is reacted with phosphorus pentasulfide under normal temperature and normal pressure under alkaline conditions, and the thioisobutyramide is synthesized in high yield, the yield is ≥90%, and the content is ≥99%.

The invention discloses a method for preparing isobutylamido thiazolyl resorcinol. The method comprises the following steps: (1) reacting resorcinol with bromoacetic acid under the action of a catalyst to generate an intermediate shown as a formula I; (2) reacting thiourea with isobutyryl chloride to generate an intermediate shown as a formula II; and (3) reacting the intermediate shown in the formula I with the intermediate shown in the formula II under the action of alkali to generate isobutylamido thiazolyl resorcinol shown in a formula III. The synthesis steps provided by the invention aresimplified to three-step reaction, the process route is simple, the raw materials are easy to obtain, the reaction time is short, the post-treatment is simple and convenient, the purity is 99% or above, the total yield is 29.1% or above, the operation is simple, and the method is suitable for continuous industrial production.

The invention discloses a functional plate for indole adsorption and a preparation method thereof. Dihydroxy ketone aldolactol, 5-formylindole, N, N-dimethylformamide, polyvinyl alcohol and melaniline are prepared into a mixed solution B; polyvinyl acetate, N, N-dimethylformamide and 4, 6-dichloro-5-pyrimidinecarboxaldehyde are prepared into a mixed solution D; peracetic acid tert-butyl ester, chloroform and isobutyramide are prepared into a mixed solution F; the mixed solution B, the mixed solution D, the mixed solution F, methyl isobutyrate, polyethylene glycol and chloroform are prepared into a mixed solution H; distilled water is sprayed into a container with liquid nitrogen to prepare ice ball particles; ice ball particles with the particle diameter being 50 to 100 mum are put into a mold die cavity and are compactly pressed; then, the mixed solution H is cast into a mold and is subjected to freezing shaping for 6 hours in liquid nitrogen; the functional plate for indole adsorption is obtained after the chloroform and the ice ball particles are removed through vacuum freeze drying.

The invention relates to a low-carbon gasoline detergent. The low-carbon gasoline detergent is composed of the following raw material components in parts by weight: 5-28 parts of o,o'-bis(2-aminopropyl)polypropyleneglycol, 1-4 parts of isobutyramide, 2-5 parts of methylcyclopentadienyl manganese tricarbonyl, 1-4 parts of tert-butyl methyl ether, 3-6 parts of tert-butyl ethyl ether, 0.1-0.6 part ofhexamethylphosphoramide, 2-4 parts of butanol, 8-16 parts of octanol, 2-6 parts of ethyl acetate, 0.2-2 parts of a detergent, 0.1-0.5 part of an antioxidant, 0.1-0.8 part of isododecane, 15-30 partsof naphtha and 1-8 parts of a friction reducing agent. According to the technical scheme, the provided low-carbon gasoline detergent has the advantages that the gasoline detergent is environmentally friendly, economic and high in heat value, not only benefits sufficient combustion of gasoline, but also can reduce emission of harmful gas of carbon monoxide, sulfur-containing gas and the like in tail gas, and can reduce emission of particles in the tail gas, and the swelling property and air lock of modified methanol gasoline are well overcome.

The invention relates to an isobutyramide preparation method.According to the method, isobutyronitrile and deionized water serve as raw materials, and under the action of a nitrile hydratase catalyst, isobutyronitrile and deionized water have a hydration reaction to generate isobutyramide, and a high-purity isobutyramide crystal product can be obtained by easily processing an isobutyramide aqueous solution.According to the method, the high-purity isobutyramide crystal product can be obtained by easily processing the isobutyramide aqueous solution, the purity of the product is as high as 99.95% or above, and the product does not contain organic solvents and other harmful components and is particularly suitable for application in the medical field.According to the method, reaction conditions are mild, operation is easy, the product yield is as high as 99% or above, the preparation process is simple, and industrialization is easy.

The invention discloses a preparation method for 8-benzyl-3-(3-isopropyl-5-methyl-4H-1,2,4-triazole-4-base)-8-azabicyclo[3.2.1]octane. The preparation method comprises the following steps of: heating and refluxing N-(8-benzyl-8-azabicyclo[3.2.1]octyl-3-base)isobutyramide serving as a raw material and a vulcanization reagent in a non-proton solvent to obtain N-(8-benzyl-8-aza-bicyclo[3.2.1]octyl-3-base)isobutyl sulfamide; making sodium alcoholate react with halogenated hydrocarbon or sulfate to obtain N-(8-benzyl-8-aza-bicyclo[3.2.1]octyl-3-base)isobutyl imine acid thioester; heating and refluxing an alcohol with 2-5 carbon atoms and acethydrazide to obtain crude 8-benzyl-3-(3-isopropyl-5-methyl-4H-1,2,4-triazole-4-base)-8-aza-bicyclo[3.2.1]octane; and refining normal heptane and ethyl acetate to obtain a high-purify target product. Due to the adoption of the method for preparing the 8-benzyl-3-(3-isopropyl-5-methyl-4H-1,2,4-triazole-4-base)-8-azabicyclo[3.2.1]octane, water is prevented from interfering an intermediate reaction process, the yield is high, and the product purity is high.

The invention provides an antibacterial modified chitosan non-woven fabric and a preparation method thereof. The preparation method comprises the steps that the chitosan non-woven fabric is immersed in a solution containing 2-bromo-isobutyryl bromide to be subjected to an amidation reaction, and a bromo-isobutyryl amide grafted non-woven fabric is obtained; the bromo-isobutyryl amide grafted non-woven fabric is immersed into a solution containing vinyl pyrrolidone for atom transfer radical polymerization reaction to obtain a non-woven fabric grafted with polyvinylpyrrolidone; and the non-woven fabric grafted with polyvinylpyrrolidone is immersed into an iodine-containing solution for complex reaction to obtain the antibacterial modified chitosan non-woven fabric. According to the antibacterial modified chitosan non-woven fabric and the preparation method thereof provided by the invention, polyvinylpyrrolidone is grafted on the surface of the chitosan non-woven fabric, and iodine and polyvinylpyrrolidone are complexed, so that the antibacterial property of the chitosan non-woven fabric is greatly improved.

This invention is directed to pharmaceutical combination compositions and methods containing (-)-cis-6-phenyl-5-(4-(2-pyrrolidin-1-yl-ethoxy)-phenyl)-5,6,7,8-tetrahydronaphthalene-2-ol or a pharmaceutically acceptable salt thereof and 2-amino-N-(2-(3a(R)-benzyl-2-methyl-3-oxo-2,3, 3a, 4,6,7-hexahydro-pyrazolo-[4,3-c]pyridin-5-yl)-1(R)-benzyloxymethyl-2-oxo-ethyl)-isobutyramide or a pharmaceutically acceptable salt thereof, methods of using such compositions and kits containing such compositions. The compositions are useful for treating musculoskeletal frailty, including osteoporosis, osteoporotic fracture, low bone mass, frailty and low muscle mass.

The invention provides a preparation method of 8-benzyl-3-(3-isopropyl-5-methyl-4H-1,2,4-triazol-4-yl)-8-azabicyclo(3.2.1)octane, which comprises the following steps successively: taking N-(8-benzyl-8-azabicyclo(3.2.1)oct-3-yl)-isobutyramide as a raw material and heating to reflux with a chlorinating agent in an aprotic solvent, then reacting with alcohol under the action of triethylamine to obtain isobutyl-N-(8-benzyl-8-azabicyclo(3.2.1)oct-3-yl)imidate, and heating to reflux with acetohydrazide in alcohol of C2-C5 to obtain 8-benzyl-3-(3-isopropyl-5-methyl-4H-1,2,4-triazol-4-yl)-8-azabicyclo [3.2.1] octane crude, and finally purifying by n-heptane and ethyl acetate to obtain the target product with high purity. The 8-benzyl-3-(3-isopropyl-5-methyl-4H-1,2,4-triazol-4-yl)-8-azabicyclo [3.2.1] octane prepared by the method provided by the invention has the advantages of less byproducts, high yield and high product purity.

The present invention discloses a vulcanizing agent preparing and deodorizing method for hydrogenation catalyst ex-situ pre-vulcanizing. The vulcanizing agent preparing and deodorizing method comprises vulcanizing agent synthesis and vulcanizing agent deodorizing, wherein excessive ammonia water is adopted as a catalyst, isobutene and sulphur are subjected to addition to produce the main product vulcanizing agent and concurrently produce the byproduct isobutyramide, and the physical method treatment technology of gas stripping and the chemical method treatment technology of hydrogen peroxide oxidation and ethylene carbonate treatment are used to carry out combined deodorizing on the vulcanizing agent. According to the present invention, the physical method treatment technology of the gas stripping and the chemical method treatment technology of the hydrogen peroxide oxidation and the ethylene carbonate treatment are used to carry out combined deodorizing, such that mercaptan, thioketone, thio thioketone and other odor components in the coarse vulcanizing agent product can be effectively removed so as to effectively reduce the odor; and after the reaction, the catalyst and the product are easily separated, the ammonia water can be recovered and recycled, the wastewater and the waste gas are not produced, only a small amount of the waste residue is produced during the filtering, and the isobutyramide product with the purity of more than 95% can be obtained by carrying out the crystallization purification treatment on the waste residue.

The invention relates to the field of medicine and chemical industry, particularly relating to a preparation method for the thio isobutyramide. In the invention, the isobutyramide is arranged in the alkaline condition to react with the phosphorus pentasulfide under the normal temperature and pressure to synthesize the thio isobutyramide at a high collection rate. The collection rate is equal to or more than 90 percent; the content is equal to or more than 99 percent.

The invention relates to a preparation method of isobutyramide. The method comprises the following steps: conducting a hydration reaction of isobutyronitrile and de-ionized water, which serve as raw materials, under the action of a nitrile hydratase catalyst so as to obtain isobutyramide, and conducting simple treatment on an obtained isobutyramide water solution so as to obtain a high-purity isobutyramide crystal product. According to the preparation method provided by the invention, the high-purity isobutyramide crystal product can be prepared by conducting simple treatment on the obtained isobutyramide water solution; and the product, which is higher than 99.95% in purity and is free from such harmful ingredients as an organic solvent and the like, is especially applicable to medical field. The method is mild in reaction conditions and simple to operate, simple in preparation process and easy for industrialization, and the yield of the product reaches 99% or above.

The present invention relates to the technical field of cosmetics, and particularly relates to an isobutyramide derivative compound and an application thereof. The obtained compound can be used for preparing a cosmetic reagent or a pharmaceutical reagent by preparing the series compound which has antihistamine and inhibits skin erythema, pruritus and hyaluronidase. The cosmetic reagent and the pharmaceutical reagent are not specifically limited. For example, the reagents can be washing cosmetics such as skin softening lotion, nutritional lotion, massage cream, body lotion, gel, nutritional cream, facial masks and hair gel or bath cream shampoo, and also can be drug preparation products such as similar cream, ointment, cream, plaster or spray; and when the compound is used for the sensitiveskin, infant and child cosmetics can be also added with the compound to reduce irritation.

A sulphonyl tetrazole compound 7 with the following structure, its preparation method and its use for preparing laetispicine. The said sulphonyl tetrazole compound 7, (1-phenyl-5-(3,4-methylenedioxyphenyl ethyl) sulphonyl tetrazole), is obtained from piperonal as raw material and by steps of Darzens condensation, hydrolysis, decarboxylation, reduction, condensation and oxidation. Laetispicine is prepared from the said compound as raw material, by condensation with 9-carbonyl-2E-4E-nonadienoic acid isobutyramide (compound 14), or by reaction with 5-(tetrahydropyran-2-oxo) n-pentanal (compound 10), deprotection, Swern oxidation, Wittig-Horner reaction, hydrolysis and amidation. As shown in H NMR, C NMR, MS and IR, the laetispicine prepared from the above-said compound is consistent with the laetispicine extracted from natural products.

The present invention discloses a vulcanizing agent preparing and deodorizing method for hydrogenation catalyst ex-situ pre-vulcanizing. The vulcanizing agent preparing and deodorizing method comprises vulcanizing agent synthesis and vulcanizing agent deodorizing, wherein excessive ammonia water is adopted as a catalyst, isobutene and sulphur are subjected to addition to produce the main product vulcanizing agent and concurrently produce the byproduct isobutyramide, and the physical method treatment technology of gas stripping and the chemical method treatment technology of hydrogen peroxide oxidation and ethylene carbonate treatment are used to carry out combined deodorizing on the vulcanizing agent. According to the present invention, the physical method treatment technology of the gas stripping and the chemical method treatment technology of the hydrogen peroxide oxidation and the ethylene carbonate treatment are used to carry out combined deodorizing, such that mercaptan, thioketone, thio thioketone and other odor components in the coarse vulcanizing agent product can be effectively removed so as to effectively reduce the odor; and after the reaction, the catalyst and the product are easily separated, the ammonia water can be recovered and recycled, the wastewater and the waste gas are not produced, only a small amount of the waste residue is produced during the filtering, and the isobutyramide product with the purity of more than 95% can be obtained by carrying out the crystallization purification treatment on the waste residue.

The invention discloses a preparation method of a nickel molybdenum sulfide / foamed nickel electrode material, which comprises the following steps: taking foamed nickel as a working electrode, taking nickel salt as an electrolyte, and carrying out constant-potential anode electrodeposition to obtain nickel hydroxide / foamed nickel; mixing with molybdate and an organic sulfur source, and carrying out hydrothermal reaction to prepare a nickel molybdenum sulfide / foamed nickel electrode material; the nickel salt is one or two of nickelous nitrate, nickelous chloride, nickelous bromide, nickelous sulfate and nickelous acetate; the molybdate is one of sodium molybdate, potassium molybdate and ammonium molybdate; the organic sulfur source is one or two of thioformamide, thioacetamide, thiopropanamide, thiobutyramide and thiobutyramide; the organic sulfur source is one or two of thiobutyramide, thioacetamide, thiopropanamide, thiobutyramide and thiobutyramide; the material has good electrochemical performance and has a good application prospect in the field of supercapacitors.

The invention discloses a function board for adsorbing carbazole and a preparation method thereof. The preparation method comprises the following steps: preparing a mixed solution B from 2-piperidone, 4-(1H-imidazol-1-yl)benzoic acid, milliliters of N,N-dimethylformamide, polyvinyl acetate and 2-mercaptobenzothiazole; preparing a mixed solution D from nitrile polyisoprene, N,N-dimethylformamide and 2,4-dimethylquinoline-3-carboxylate; preparing a mixed solution F from dibenzoyl peroxide, chloroform, N-hydroxy-isobutyramide, KNO3 and calcium chloride; preparing a mixed solution H from the mixed solution B, the mixed solution D, the mixed solution F, methyl isobutyrate, polyethylene glycol and chloroform; spraying distilled water into a container with liquid nitrogen to produce ice spherical particles, and compacting the ice spherical particles with particle sizes of 50 to 100[mu]m in a die cavity of a die; pouring the mixed solution H into the die, performing freezing shaping for 6 hours in the liquid nitrogen, performing vacuum freeze drying, and removing the chloroform and the ice spherical particles to obtain the function board for adsorbing the carbazole.

The invention discloses a preparation method of heptafluoroisobutyronitrile, the preparation method comprises the following steps: a raw material heptafluoroisobutyramide is subjected to a dehydration reaction under the action of a catalyst to obtain heptafluoroisobutyronitrile, and the catalyst is a molecular sieve catalyst selected from at least one of an HY molecular sieve, a NaY molecular sieve, a beta molecular sieve ZSM-5 molecular sieve, a 3A molecular sieve, a 4A molecular sieve and a 5A molecular sieve. The method has the advantages of high product selectivity, high reaction efficiency, suitability for industrial production and the like.

The invention discloses a granular adsorbent for adsorbing carbazole and its preparation method. The granular adsorbent for absorbing carbazole is prepared by preparing 2-piperidone, 4-(1H-Imidazol-1-yl)benzoic acid, milliliter N,N-dimethylformamide, polyvinyl acetate, and 2-mercaptobenzothiazole to be mixed liquor B; preparing polyisoprene nitrile, N,N-dimethylformamide, 2,4-dimethyl quinolone-3-carboxylic acid ethyl ester to be mixed liquor D; preparing dibenzoyl peroxide, chloroform, N-hydroxy-isobutyramide, KNO3, and calcium chloride to be mixed liquor F; preparing the mixed liquor B, the mixed liquor D, the mixed liquor F, methyl isobutyrate, polyethylene glycol, and chloroform to be mixed liquor H; dropwise adding the mixed liquor H to a polyvinyl alcohol solution with the concentration of 6.1wt%, and obtaining mixed liquor I; adding a polyvinyl alcohol solution with the concentration of 1.2wt% to the mixed liquor I, and separating, washing, freezing and drying it after stirring for 7-8 hours.

The invention relates to a purification method of heptafluoroisobutyramide, and belongs to the field of chemical industry separation processes. The invention particularly relates to a method for obtaining high-purity heptafluorobutyramide by extracting a mixture of heptafluoroisobutyramide and ammonium fluoride through a single solvent or a mixed solvent. According to the invention, the purification method provided by the invention is simple, convenient and effective, heptafluoroisobutyramide can be purified until the purity is 98%, even 99% or above, and the content of ammonium fluoride is lower than 20ppm; particularly, a series of five-membered ring fluorides are used as a single solvent or form a mixed solvent with water, so that the extraction efficiency is high, and the five-membered ring fluorides are high in safety, non-flammable and non-explosive, are easy to recycle and are an ideal extracting solvent.

The invention discloses a method for preparing isobutyrylamide thiazolyl resorcinol, comprising the following steps: (1) reacting resorcinol and bromoacetic acid under the action of a catalyst to generate an intermediate shown in formula I; ( 2) thiourea reacts with isobutyryl chloride to generate the intermediate shown in formula II; (3) the intermediate shown in formula I and the intermediate shown in formula II are reacted under the action of a base to generate isoform shown in formula III. Butanamidothiazolyl resorcinol. The synthesis steps provided by the invention are simplified to three-step reactions, the process route is simple, the raw materials are readily available, the reaction time is short, the post-processing is convenient, the purity is over 99%, the total yield is over 29.1%, the operation is simple, and it is suitable for continuous industrial production. .