101 results about "Propiophenone" patented technology

The present invention relates to hyaluronic acid ester derivatives, whose carboxylic groups are partially esterified with hydroxy groups of propiophenone derivatives, to the hydrogel materials consisting of the said hyaluronic acid ester derivatives, to their preparation process by photocuring of the hyaluronic acid ester derivatives, and their use in the biomedical, sanitary and surgical fields, and in the medical field as controlled release systems for drugs.

A propiophenone derivative of the formula (I): wherein OX is a hydroxy group which may optionally be protected, Y is a lower alkyl group, and Z is a beta -D-glucopyranosyl group wherein one or more hydroxy groups may optionally be protected, or a pharmaceutically acceptable salt thereof. Said compounds have excellent hypoglycemic activity so that they are useful in the prophylaxis or treatment of diabetes.

The invention relates to a method for adsorbing and recycling organic solvent from exhaust gas in printing industry and a device. An adsorber 1 and an adsorber 2 of the device are respectively connected with a cooler by a valve and a pipeline, which lead the exhaust gas in printing industry to enter the adsorbers; the adsorber 1 and the adsorber 2 are also respectively connected with a condenser 1 by the valve and the pipeline; the condenser 1 is connected with a decanter 1 which is connected with a storage vat 1; the storage vat 1 is respectively connected with an adsorber 3 and an extraction column by the valve and the pipeline; the extraction column is also respectively connected with the adsorber 3 and the decanter 1. The method consists of an adsorption process, a desorption process, a separation process and a water treatment process. The exhaust organic gas containing toluene, acetone and isopropyl alcohol can be adsorbed by an activated carbon adsorber; after the activated carbon adsorption is saturated, steam is assisted to carry out the desorption process, while the mixed liquid desorbed is carried out to separate oil from water in the decanter. The method and device has the advantages of simple process, convenient operation, low price, high efficiency of purification and recovery and so on.

The invention relates to a method for preparing an intermediate 2-amino-5-hydroxy propiophenone (I) that is relevant to camptothecin drug synthesizing, which comprises the following steps in sequence: firstly, with the existence of inorganic alkali, 2-nitryl-5-hydroxy benzaldehyde (II) and methylation reagent carry out the O-methylation reaction in solvent to obtain 2-nitryl-5-methoxy benzaldehyde (III); secondly, the compound (III) and hydroxylamine hydrochloride react by a two-step method or a one-step method to obtain 2-nitryl-5-methoxy cyanobenzene (V); thirdly, with the catalysis of the palladium catalyst, the compound (V) carries out the hydrogenation reaction in organic solvent to obtain 2-amino-5-methoxy cyanobenzene (VI); fourthly, under the protection of inert gases, the compound (VI) and format reaction reagent carry out the Grignard reaction in the organic solvent to obtain 2-amino-5-methoxy propiophenone (VII); and fifthly, the compound (VII) and the demethylating reagent carry out the demethylating reaction to obtain 2-amino-5-hydroxy propiophenone (I).

The invention discloses a machine-made sand modifier and application thereof in concrete containing machine-made sand. The machine-made sand modifier disclosed by the invention is prepared from the following raw materials in parts by weight: 10-15% of diethanolisopropanolamine (DEIPA), 2-5% of maltodextrin, 5-10% of dipropylamine, 1-3% of air entraining agent for Clariant polyether type concrete,5-10% of sodium hexametaphosphate and the balance of water; the maltodextrin is formed by taking various starches as raw material, and performing low-degree controlled hydrolysis conversion, purifyingand drying through an enzymic method process, and a hydrolysis DE value is less than 20%, the dipropylamine molecular formula is C6Hl5N or (CH3CH2)2NH, and the molecular weight is 101.19; the dipropylamine is colorless liquid, has ammonia odor, can be mixed and dissolved in ethanol, ether, benzene and acetone, and is flammable liquid; and the main application is to organically synthesize an intermediate and take the dipropylamine as the solvent. The machine-made sand modifier is simple in process, convenient to operate, free from producing material in the production process, environment-friendly and reliable, and in favor of large-scale and industrial production; when the machine-made sand modifier is used, the concrete strength can be effectively improved, the adhesive material dosage isless, and the concrete encapsulating property can be regulated, and the concrete flowability is increased.

The invention relates to compositions comprising a hydrogel matrix, where the matrix comprises poly(ethylene glycol) dimethyacrylate (PEGDMA), an acrylate, such as methacrylic acid (MAA) and methyl methacrylate (MMA), as well as 2-hydroxy-2 methyl propiophenone (HMPP).

The present invention relates to hyaluronic acid ester derivatives, whose carboxylic groups are partially esterified with hydroxyl groups of propiophenone derivatives, to the hydrogel materials consisting of the said hyaluronic acid ester derivatives, to their preparation process by photocuring of the hyaluronic acid ester derivatives, and their use in the biomedical, sanitary and surgical fields, and in the medical field as controlled release systems for drugs.

The invention discloses a method for preparing polymerizable photoinitiators. The polymerizable photoinitiators are prepared from methacrylic acid and 2-hydroxyl-4'-(2'-hydroxyethoxy)-2-methyl propiophenone by the aid of direct esterification processes. The use quantity of polymerization inhibitors in a reaction system accounts for 0.01%-0.5% of the mass of the methacrylic acid, the use quantity of methane sulfonic acid which is a catalyst accounts for 0.1%-2% of the mass of the methacrylic acid, and a molar proportion of the methacrylic acid to the 2-hydroxyl-4'-(2'-hydroxyethoxy)-2-methyl propiophenone is 1:1-1.2. Each polymerization inhibitor is methoxyphenol or hydroquinone or 2-tertiary butylhydroquinone, and a solvent is toluene or dimethylformamide or tetrahydrofuran. The method has the advantages that the polymerizable photoinitiators are excellent in compatibility with monomers and resin in photo-curing systems fragments obtained after the polymerizable photoinitiators are subjected to illumination pyrolysis are low in migration rate in cured films and are anti-yellowing, excellent initiation effects can be realized, and the method can be applied to the field of photo-cured coating, printing ink, adhesive and the like; the method for synthesizing the polymerizable photoinitiators is low in cost, processes for preparing the polymerizable photoinitiators are simple and convenient, and obvious application effects can be realized.

The invention provides a method for preparing methoxamine hydrochloride. 4'-methoxypropiophenone is taken as a raw material, is subjected to bromination, condensation, hydrogenation and salt forming reaction to obtain the methoxamine hydrochloride; and the 4'-methoxypropiophenone is utilized to prepare 2-bromine-1-(2, 5-dimethoxybenzene) acetone at first, the 2-bromine-1-(2, 5-dimethoxybenzene) acetone is then reacted with 2-di-tert-butyl carbonylamine to obtain 2-di-tert-butyl carbonylamine-1-(2, 5-dimethoxybenzene) acetone, the 2-di-tert-butyl carbonylamine-1-(2, 5-dimethoxybenzene) acetone is subjected to hydrogenation reduction to obtain 2-di-tert-butyl carbonylamine-1-(2, 5-dimethoxybenzene) propyl alcohol, and finally, the 2-di-tert-butyl carbonylamine-1-(2, 5-dimethoxybenzene) propyl alcohol is reacted with hydrochloric acid to obtain the methoxamine hydrochloride. The method has the advantages of short reaction steps, moderate operation conditions, convenience and suitability for industrial production.

The invention relates to a concentrated multifunctional detergent. A formula of the concentrated multifunctional detergent contains the following ingredients in parts by weight: 2-8.5 parts of fatty alcohol-polyoxyethylene ether, 1-10 parts of sodium sec-alkyl sulfonate, 5-15 parts of alkyl glycoside, 10-30 parts of limonene, 5-10 parts of polyethylene glycol, 1-3 parts of radix astragali-polygonatum sibiricum extract, 2-5 parts of aloe gel, 0.5-2 parts of citric acid, 0.1-1 part of flavoring essence and 5-15 parts of water. The multifunctional detergent provided by the invention can be applied to various surfaces of metal, plastics, glass, stone, ceramics and the like and can be used for cleaning various blots such as oil stains, dust, printing ink, lipsticks, fruit juice, coffee, bloodstains, ball-point pen ink and marking pen ink. The multifunctional detergent is prepared from natural-derived raw materials, is free of heavy metals, is free of phosphorus and is free of toxic solvents such as benzene and acetone, thereby not polluting environment. Skin care ingredients are added, so that the multifunctional detergent does not injure hands and does not damage cleaned objects. A concentrate formula is adopted, so that transportation and storage are facilitated.

The invention belongs to the technical field of super-molecular chemistry and particularly relates to small molecule peptide-based cholesteric organic gel molecules and a preparation method thereof. The cholesteric organic gel molecules can form gel in an organic solvent and the formed gel has thermal stability and water stability and can respond to ultrasound for realizing transformation of ultrasonically-induced gel into gel. The organic gel molecule comprises 1) an anhydride naphthalene part serving as a luminophor, 2) a middle small peptide serving as a functional group for forming intermolecular hydrogen bonds and 3) a sterides part which has biocompatibility and serves as a gelation factor and a hydrophobic group. The molecule can form high-quality gel which has rich micro-nanoscale macro morphologies, such as nuclear shells, solid balls, defect balls, nanofiber, micro-fiber and the like, and has regular shape and high repeatability in nearly ten organic solvents including acetonitrile, ethanol, benzene, toluene, acetone and the like through a sol-gel process. The organic fluorescent gel has a certain application value in the aspects of nano material preparation, medicinal carrier transportation, biological marking and the like.

The invention relates to compositions comprising a hydrogel matrix, where the matrix comprises poly(ethylene glycol) dimethyacrylate (PEGDMA), an acrylate, such as methacrylic acid (M) and methyl methacrylate (MMA), as well as 2-hydroxy-2 methyl propiophenone (HMPP).

The invention provides a method for asymmetrically catalyzing and synthesizing (R)-(+)-3-chlorine-phenylpropanol. The method is implemented as follows: metal hydroboron is taken as a reducing agent and organic acid is taken as an accessory ingredient to asymmetrically catalyze and reduce 3-chlorine-propiophenone; spiroborate and hydroboron are mixed by a tetrahydrofuran solvent, a certain quantity of organic acid is added and stirred until mixed solution is clear and transparent, tetrahydrofuran solution of the 3-chlorine-propiophenone is dropped slowly and stirred to reaction at the 50 degrees below zero to 30 DEG C, reaction liquid is purified to obtain the (R)-(+)-3-chlorine-phenylpropanol mono-spin-body. The optical purity of undetached (R)-(+)-3-chlorine-phenylpropanol is more than 90%e.e..

The invention discloses an application of a novel microbial strain Saccharomyces cerevisiae CGMCC No.2230 in microbial transformation preparation of (S)-(-)-3-chlorine-1-phenylpropanols. The application of the invention is that: 3-chlorine-1-propiophenones are taken as substrates, and immobilized cell particles which are prepared by fermentation broth obtained after fermentation of the Saccharomyces cerevisiae strain CGMCC No.2230 are taken as biocatalysts; transformation reaction time of transformation liquid is 8 to 72 hours at the temperature of 25 to 30 DEG C in dibutyl phthalates, and the product S)-(-)-3-chlorine-1-phenylpropanols are obtained after separation and purification of the transformation liquid. The microbial transformation method has the advantages of friendly surroundings, mild reaction conditions, simple product separation, high substrate transformation ratio, good product purity and biocatalysts capable of being reused, and is suitable for commercial process.

The invention provides a high temperature resistant optical fiber and a preparation method thereof. The high temperature resistant optical fiber comprises an optical fiber core layer, a cladding layerand a double-layer coating, wherein, the coating material of an inner coating is composed of an acrylate oligomer, 2-hydroxyl-2-methyl propiophenone, vinyl tri(2-methoxy ethoxyl) silane and (2,4,6-trimethyl benzoyl)diphenyl phosphine xide; an outer coating is a high temperature resistant acrylic resin outer coating. The high temperature resistant optical fiber still maintains the reliability of optical transmission at a high temperature environment of 150DEG C for a long time, optical fiber coating has no aging phenomena of yellowing and blackening. The method is simple. The optical fiber transmission loss of the high temperature resistant optical fiber prepared at the wiredrawing speed of 2000-2200m / min, the attenuation value of the optical fiber at 1550nm is not more than 0.25dB / km, theadditional attenuation value of the optical fiber at environment of 150DEG C for a long time is not more than 0.05dB / km.

The invention provides a synthetic method for increasing the yield of 5-chloro-1-indanone, and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: taking 3,4'-dichloropropiophenone as a raw material, adding an aprotic acid catalyst, then heating to a molten state, and then adding a phase transfer catalyst to carry out reactions; wherein the aprotic acid catalyst is one of AlCl3, ZnCl2, InCl3, TiCl4, BF3, Fe(CF3SO3)3, Fe(CF3SO3)2 and gamma-aluminum oxide; the phase transfer catalyst is one of tetrabutyl ammonium bromide, tetrabutyl ammoniumchloride, trioctyl methyl ammonium chloride, benzyl triethyl ammonium chloride, dodecyl trimethyl ammonium chloride, 18-crown-6, 15-crown-5, polyethylene glycol 400, polyethylene glycol 600 and polyethylene glycol 800. By adding the phase transfer catalyst, the selectivity of a Friedel-Crafts reaction is obviously improved, the side reaction is reduced, and the reaction yield is improved.

The invention discloses a controllable preparation method of a biomass gel-based hierarchical pore ordered three-dimensional network structure carbon material. The preparation method comprises the following steps: preparing polyacrylamide / starch / polyaniline three-network gel from acrylamide, aniline, polyvinylpyrrolidone, N, N '-methylene bisacrylamide, 2-hydroxy-4'-(2-hydroxyethyl)-2-methyl propiophenone, soluble starch and the like; carrying out constant-temperature pyrolysis treatment in a tubular furnace at 700 DEG C to obtain carbon gel; mixing the carbon gel with solid KOH, adding waterfor soaking, and drying to obtain a carbon gel / KOH mixture; activating for 2 hours under the protection of inert gas at the temperature of 600-800 DEG C to obtain a crude product; and putting the crude product into a hydrochloric acid solution for soaking, and drying to obtain the hierarchical pore ordered three-dimensional network structure carbon supercapacitor electrode material. The series supercapacitor electrode material prepared by the invention is a nitrogen-oxygen co-doped advanced carbon material with hierarchical pores and a three-dimensional nanostructure, and shows excellent electrochemical performance when being used for supercapacitors.

The invention discloses a preparation method of an imidazo-[1,2-a] pyridine compound. The preparation method comprises the following steps of: (1) adding 2-aminopyridine compound, a propiophenone compound and a condensation catalyst to an organic solvent, and heating for condensation reaction, wherein an imine intermediate is obtained after complete reaction; (2) adding a copper catalyst, an oxidizing agent, alkali the imine intermediate obtained from the step (1) to the organic solvent, heating for ring closing reaction, and carrying out post processing to obtain the imidazo-[1,2-a] pyridine compound after the complete reaction. The preparation method disclosed by the invention has the advantages of wide source, cheapness and easiness for obtaining of used raw materials, namely the 2-aminopyridine compound and the propiophenone compound, is easy to operate without a complex post processing process and is suitable for the large-scale preparation of the compound.

The invention discloses a compounding method for a beta-aryl propiophenone compound. The compounding method is characterized by taking chalcone compounds as reaction substrates, and selectively chemically reducing the carbon-carbon double bonds in the reaction substrates at 100-160 DEG C under the accelerating effect of inorganic alkaline and elemental selenium under the nitrogen condition in an organic solvent, thereby acquiring the beta-aryl propiophenone compound. The invention has the beneficial effects of mild reaction condition, simple and convenient operation, high functional tolerance, high reaction efficiency, high yield and purity, simple post-processing, reasonable price and suitability for large-scale industrial production.

A disclosed preparation method for erythro-structure methoxamine hydrochloride comprises the following steps: (1) dissolving an initial raw material 2,5-dimethylpropiophenone in an organic solvent, under the condition of introducing dry hydrogen chloride gas, dropwise adding a 1-butyl nitrite solution to perform an oximation reaction, so as to obtain an intermediate I; (2) under the acidic condition, taking a methanol solution as a solvent, take palladium on activated carbon as a catalyst, employing hydrogen to reduce the oximido group in the intermediate I, so as to obtain an intermediate II; and (3) performing hydrogenation reduction reaction on the intermediate II to obtain the erythro-structure methoxamine hydrochloride. The method provided by the invention is simple in operation, economic, environment-friendly, mild in reaction conditions, excellent in product quality and high in yield, and can help to obtain the single erythro-structure methoxamine hydrochloride.

The invention relates to an ultraviolet (UV) cured paint. The UV cured paint is prepared from the following raw materials in part by weight: 50-60 parts of epoxy acrylate, 20-25 parts of methacrylate, 6-8 parts of 2-hydroxyl-2-methyl-propiophenone, 10-12 parts of dimethylaminoethyl methacrylate, 1-2 parts of polyoxyethylene stearate, 10-12 parts of dipentaerythritol hexaacrylate, 3-5 parts of ethylene glycol monoethyl ether acetate, 1-2 parts of a silane coupling agent KH-550, 3-4 parts of an accelerator DM, 2-3 parts of acrylic acid-4-polyhydroxybutyrate, 1-2 parts of glycidyl methacrylate, 2-3 parts of bis tetradecene ester, 1-2 parts of an antioxidant DSTP (disteaxylthiodipropionate), and 4-5 parts of a dispersing aid. The UV paint is suitable for priming paints of hardware, zinc alloy, aluminium alloy, stainless steel, and vacuum plating coating UV, has lasting performance and strong universality, and meets the ROHS (Restriction Of Hazardous Substances) requirements.

The invention discloses a UV scratch-resistant agent of an organic-inorganic composite system and a preparation method and an application of the UV scratch-resistant agent. The UV scratch-resistant agent comprises the following raw materials by the weight percentage: 26-34% of a urethane acrylate oligomer, 2.4-6.4% of a nano silicon dioxide dispersion liquid, 0.3% of an adhesion promoter, 44-52% of a solvent, 0.3% of a reactive leveling agent, 3% of a macromolecular photoinitiator and 12% of an acrylate reactive diluent, wherein the sum of the weight percentages of the raw materials is 100%. The urethane acrylate oligomer comprises a urethane acrylate oligomer with six functional groups; the adhesion promoter comprises a phosphate modified acrylate oligomer; the leveling agent comprises acrylic acid modified polysiloxane; the macromolecular photoinitiator comprises 2-hydroxy-4-(2-hydroxyethyl)-2-methyl propiophenone. After coating the surface of a window film and being cured into a film, the scratch-resistant agent has the characteristics of low odor, high hardness, good adhesive force, excellent wear resistance and the like, and meets the index requirements of the window film market on film hardening treatment.

The invention relates to a method for preparing propiophenone by biomimetic catalytic oxidation of n-propylbenzene with oxygen, comprising the following steps: taking n-propylbenzene as the raw material, selecting any one of 1-30ppm of mononuclear metalloporphyrin and mu-oxo-dinuclear metalloporphyrin or the composition of the two substances as the catalyst under normal pressure and in the absence of solvents, introducing oxygen at the flow rate of 10-60mL / min, initiating reaction at 140-160 DEG C and then carrying out reaction at 70-110 DEG C for 4-10h, thus obtaining the propiophenone. In the method, the way of high temperature quick initiation and low temperature reaction is adopted, thus minimizing the reaction initiation time, greatly shortening the reaction time, improving the reaction efficiency, reducing the energy consumption, lowering the operation cost and improving the reaction safety.

The invention provides a printed circuit board base plate and a preparation method thereof. The base plate comprises the components of bisphenol A benzoxazine, bisphenol A epoxy resin, silicon resin, p-aminophenol triglycidyl epoxy resin, N,N-dimethylformamide, alkali-free glass fiber cloth, triethylamine, silicic acid anhydride, phenol-formaldehyde resin, polyamide polyamine epichlorohydrin, methylbenzene, acetone, propyl gallate and copper foil. The preparation method comprises the following steps: heating to dissolve bisphenol A benzoxazine, N,N-dimethylformamide, triethylamine, methylbenzene, acetone and propyl gallate at first; then adding the other components except for the alkali-free glass fiber cloth and gold foil, and stirring to obtain a steeping glue solution; removing steeped alkali-free glass fiber cloth; and then baking to obtain a prepreg, superimposing the prepreg with the copper foil, and cooling in a press after heat and pressure preservation. The printed circuit board base plate provided by the invention has the advantages of good insulating property, heat resistance and caking property and low cost; moreover, the production process is relatively simple and is suitable for industrial production.

The invention relates to an enameled wire paint remover as well as a preparation method and a use method thereof. The enameled wire paint remover is characterized by being prepared from the following components in parts by weight: 20-30 parts of dichloromethane, 13-16 parts of diethylene glycol monomethyl ether, 10-15 parts of ethanol, 8-12 parts of glycol, 0.3-0.8 part of dimethyl sulfoxide, 4-6 parts of sodium dodecyl benzene sulfonate, 0.02-0.1 part of 98 percent by weight of concentrated sulfuric acid and the balance of water. The preparation method comprises the following steps: uniformly mixing the dichloromethane, the diethylene glycol monomethyl ether and the dimethyl sulfoxide to obtain liquid A; uniformly mixing the ethanol, the glycol, sulfuric acid, the sodium dodecyl benzene sulfonate as a surface active agent and the water to obtain liquid B; uniformly mixing the liquid A and the liquid B to obtain a finished product. Compared with an existing organic paint remover, the enameled wire paint remover contains no benzene, acetone and other poisonous substances, is low in cost, green and environment-friendly, and quick and efficient in paint removal, does not corrode a copper substrate, is prepared and used at a normal temperature, is mild in use condition and has the advantage of being simple and convenient to operate, time-saving and labor-saving.

The invention relates to a method for preparing waterproof and antifogging surface modified glass. The method comprises the following steps of: performing ultraviolet (UV) photo-curing treatment on the modified glass surface by using a photo-curing monomer containing a special functional group to obtain modified waterproof and antifogging glass; preparing silicon-containing photoinitiator is prepared by reacting a silane coupling agent containing isocyanic acid with a photoinitiator 2-hydroxyl-4-(2-hydroxyethoxy)-2-methyl propiophenone (the photoinitiator 2959); and grafting the silicon-containing photoinitiator on the glass surface by hydrolysis reaction to form a chemically-bonded single molecular layer. The product has the characteristics that weather resistance and hydrophobicity of the glass are improved and the binding property between two interfaces is improved by chemical bonding; photo-curing characteristics that the product is environment-friendly, efficient and easy to industrialize are fully utilized; and a way for modification technology development in the future is provided, and organic micromolecules and macromolecules containing special functional groups are grafted on the glass surface.

The invention provides a method for preparing benzoxy -2-[[1-methyl-2-[3-(trifluoromethyl)-phenyl]ethyl]amino] carbethoxy hydrochloride (I), comprising the following steps that: 1-(3-fluoromethylphenyl)-2-(2-hydroxy ethyl) aminopropane (III) is prepared in one step through a condensation reaction between 3-trifluoromethyl propiophenone (IV) and ethanolamine in an organic solvent under catalysis of a p-toluenesulfonic acid, and hydrogenization under the action of catalysis of a palladium / a carbon; the 1-(3-fluoromethylphenyl)-2-(2-hydroxy ethyl) aminopropane (III) is reacted with a hydrochloric acid to generate hydrochloride (II) of the 1-(3-fluoromethylphenyl)-2-(2-hydroxy ethyl) aminopropane (III); the hydrochloride (II) is refluxed and dehydrated in the presence of an organic menstruum; esterification of the hydrochloride (II) and benzoyl chloride are carried out to generate a crude product of a compound (I); and the crude product is added with a mixed solvent for refining to prepare a finished product of the compound I. The method has the advantages of stable process, simple operation, easy control of reaction condition, less reaction steps, convenient post-processing, less three wastes, good product quality, high yield rate and low production cost, is capable of continuously and circularly using a mother liquid and is applicable to industrial production.

The invention relates to a method for preparing 2-(4-Chloromethylphenyl) propionic acid as a loxoprofen key intermediate. The method comprises the following steps of: condensing methyl benzene as a starting raw material with propionyl chloride to obtain methyl propiophenone, carrying out bromination and methoxycarbonylation through a one-step method on the obtained methyl propiophenone, hydrolyzing to obtain 2-(p-tolyl)propionic acid, and finally carrying out chlorination on the 2-(p-tolyl)propionic acid to obtain the 2-(4-Chloromethylphenyl) propionic acid. According to the method disclosed by the invention, the methyl propiophenone can be prepared from methyl; the key intermediate 2-(p-tolyl)propionic acid can be obtained directly through a one-step one-pot method; the intermediate is chlorinated under the conditions of quantitatively illuminating and charging chlorine in petroleum ether so that the loxoprofen is finally synthesized; and in addition, the production process is very short and the wastewater amount is small.

The invention discloses a copper bromide reagent, a preparation method thereof, and a synthesis method of alpha-amido propiophenone and derivative thereof. Copper bromide cheap in industry and 2,6-bi[4-(1,1-dimethyl)-2-oxazoline-2-base] pyridine react to directly obtain high yield of high-purity copper bromide reagent, in addition, the copper bromide reagent and propiophenone containing multiple important functional groups have good reaction activity. Due to the characteristic, high yield of alpha-amido propiophenone and derivative thereof can be obtained in mild conditions, conventional expensive azoic compound materials are not used, the cost is lowered to a large extent, the operation requirement is also lowered, and alpha-amido propiophenone and derivative thereof have good application prospect in industry.

A preparation method of hydroxyl-terminated styrene resin belongs to the technical field of high molecular materials. In an ultraviolet reactor, an ultraviolet initiator of 2-hydroxyl-4-(2-hydroxyethoxy)-2-methyl propiophenone (2959) and refined styrene monomers are added; nitrogen is injected; polymerization is carried out through the initiation by ultraviolet light irradiation at room temperature, and unreacted styrene monomers are removed at a reduced pressure; and thus the hydroxyl-terminated styrene resin is obtained. The preparation method of the invention is easily available in raw materials, low in cost, simple, practical, and suitable for large-scale industrial production, and provides a new approach for the preparation of polystyrene resin with reactivity.