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66 results about "Salicylic acid ester" patented technology

Carboxylic acids. In carboxylic acid: Aromatic acids In methyl salicylate (oil of wintergreen), the COOH group of salicylic acid is esterified with methanol (CH3OH), whereas in acetylsalicylic acid (aspirin) the acid component of the ester is acetic acid, and salicylic acid contributes the phenolic −OH group.

Mite repellent composition and mite repellent product

To provide a mite repellent composition having an excellent mite repellent effect against house dust mites even after a long time has elapsed and also having excellent safety for humans and animals.SOLUTION: A mite repellent composition contains: (a) 1,8-cineol and / or 1,4-cineol; and (b) a perfume component, wherein the perfume component includes one or more kinds of perfume compounds having a logP value of 2.0 to 5.5. A blending ratio (a / b) of the component (a) to the perfume compound contained in component (b) is set to 5 to 100 on a mass basis. The perfume compound contained in the component (b) is at least one selected from the group consisting of ethyl cinnamate, allyl caproate, 3-methyl-5-phenyl-1-pentanol, citronellol, δ-dodecalactone, β-ionone, benzyl benzoate, linalyl acetate, geranyl acetate, tricyclodecenyl propionate, benzyl salicylate, limonene, and amyl salicylate.SELECTED DRAWING: None
Owner:DAINIHON JOCHUGIKU CO LTD

Dumb oil, preparation method and facial mask bag using the same

The present application relates to the technical field of packaging materials, and specifically discloses a kind of dumb oil, preparation method and mask bag using the dumb oil. The dumb oil provided in the present application includes the following components in parts by weight: 50-100 parts of acrylate polymer, 10-15 parts of reactive diluent, 1-3 parts of antifouling agent, 0.1-0.5 parts of leveling agent, 0.5-1 parts of wetting dispersant, 2-3 parts of photoinitiator, 5-20 parts of matting powder, the antifouling agent is prepared by heating reaction with salicylate and fluorinated olefin as raw materials under the action of catalyst, and acrylate polymer is mixed with Etercure 6113 and Acudyne 180, and the dumb oil provided in the present application is suitable for packaging materials such as mask bags. The present application does not need to adopt the step of electroplating fluorine silicon material, and dumb oil is directly applied on the surface of packaging film material, and only relies on the special formula of dumb oil to realize the high adhesion performance of matte layer on the surface of film, and the anti-fouling and anti-fingerprint characteristics of matte film.
Owner:上海上源印务有限公司

Sunscreen or daily care composition comprising bis-ethylhexyloxyphenol methoxyphenyl triazine

PendingUS20250049667A1Cosmetic preparationsToilet preparationsDIETHYLHEXYL SYRINGYLIDENEMALONATEPolyester
The present invention relates to a sunscreen or daily care composition comprising(i) bis-ethylhexyloxyphenol methoxyphenyl triazine (bemotrizinol),(ii) 1-(4-(1,1-dimethylethyl)phenyl)-3-(4-methoxyphenyl)propane-1,3-dione (avobenzone),(iii) a water-soluble organic UV filter,(iv) a compound selected from the group consisting of benzotriazolyl dodecyl p cresol, ethylhexyl methoxycrylene, polyester-8, diethylhexyl syringylidenemalonate, trimethoxybenzylidene pentanedione, diethylhexyl 2,6-naphthalate, bis(cyano butylacetate) anthracenediylidene, polyester-25, butyloctyl salicylate and combinations thereof.
Owner:BASF SE

Cosmetic composition for a matte foundation

A cosmetic composition for providing a matte foundation may be provided, that includes a mattifying filler, a colorant, a hydrocarbon-based oil, a hydrocarbon-based emulsifier, water, and UV filter system consisting of an organic hydrophobic UV filter, an organic water-soluble UV filter, and an inorganic UV filter. The mattifying filler may consist of a silica aerogel and optionally a modified starch, amorphous silica, a clay, and / or a silicone elastomer. The organic hydrophobic UV filter may consist of octyl salicylate, and the cosmetic composition may be free of other organic hydrophobic ultraviolet filters. The organic water-soluble ultraviolet filter may consist of 2-phenylbenzimidazole-5-sulfonic acid (PBSA), and the cosmetic composition may be free of other organic water-soluble ultraviolet filters. The inorganic UV filter may consist of UV-grade titanium dioxide, and the cosmetic composition may be free of other inorganic ultraviolet filters.
Owner:LOREAL SA

Environment-friendly fluorine-free aluminum alloy surface anticorrosive paint and preparation method thereof

The invention relates to the technical field of anticorrosive coatings, and discloses an environment-friendly fluorine-free aluminum alloy surface anticorrosive coating and a preparation method thereof. The preparation method comprises the following steps: carrying out intercalation modification treatment on Na-montmorillonite by using mono-quaternized hepta (salicylate) cage type polysilsesquioxane to prepare lamellar spacing stable montmorillonite loaded with a salicylate group and a polysilsesquioxane group; the preparation method comprises the following steps: compounding interlamellar spacing stable montmorillonite and bisphenol A glycidyl ether type epoxy resin based on a pi-pi accumulation effect between phenyl groups, and carrying out emulsification treatment through a phase inversion method to prepare a corrosion-resistant and weather-resistant water-borne epoxy resin emulsion; the environment-friendly fluorine-free aluminum alloy surface anticorrosive paint is prepared by taking a corrosion-resistant and weather-resistant water-borne epoxy resin emulsion as a film-forming raw material, and the paint product not only has excellent corrosion resistance, but also shows high weather resistance, and can play a role in resisting a corrosive medium and environmental aging simultaneously when being applied to the aluminum alloy surface.
Owner:DONGGUAN HUASHEN JINTAI NEW MATERIAL TECH CO LTD

A recyclable high molecular weight polysalicylate green material

A kind of recyclable high molecular weight polysalicylate green material belongs to the field of material synthesis. With six-membered ring internal anhydride ester monomer (R-SAOCAs) prepared from salicylic acid and its derivatives as raw material, Lewis base and thiourea (urea) are used to catalyze the fast controllable ring-opening polymerization of the monomer at room temperature in inert gas atmosphere and in suitable polymerization solvent, to prepare polysalicylate polymer material with number average molecular weight of more than 100,000 and molecular weight distribution within 1.30, and with accurate structure. The new type of polysalicylate polymer material has a high glass transition temperature comparable to polystyrene, and can be used as a substitute product of petroleum-based chemicals. At the same time, the polyester structure of the main chain endows the material with good degradation performance, and the material can be recycled and regenerated into salicylic acid small molecules under suitable conditions. The development of the new type of high molecular weight polysalicylate material provides a new window for the sustainable development of green materials.
Owner:BEIJING UNIV OF CHEM TECH

A blood-sucking insect repellent composition, and a method for repelling blood-sucking insects using the composition.

PendingJP2026121543ABenzoic acidPropanoic acid
The present invention provides a blood-sucking insect repellent composition that not only repels blood-sucking insects but also provides sustained deodorization of unpleasant odors that adhere to clothing. [Solution] A blood-sucking insect repellent composition containing an insect repellent component and a fragrance component, wherein the insect repellent component is at least one selected from the group consisting of ethyl 3-(N-butylacetamide)propionate, picaridin, p-menthane-3,8-diol, and N,N-diethyltoluamide, and the fragrance component is a compound that does not have electron-conjugated parts other than electron-conjugated parts derived from a benzene ring, a benzoic acid ester structure, or a salicylic acid ester structure, has 6 to 18 carbon atoms, a molecular weight of 98 to 270, has carbon atoms, hydrogen atoms, and oxygen atoms, and does not have sulfur atoms, nitrogen atoms, or halogen atoms.
Owner:DAINIHON JOCHUGIKU CO LTD

Sunscreen lotion containing photoresponse material and preparation method of sunscreen lotion

The invention provides a sunscreen lotion containing a photoresponse material and a preparation method thereof, and the sunscreen lotion comprises the following components in parts by weight: 20-30 parts of a photoresponse material, 3-5 parts of an anti-inflammatory component, 2-6 parts of an antioxidant component, 4-7 parts of a moisturizing component, 3-6 parts of a plant extract, 0.3-0.8 part of essence and 10-20 parts of water. The photoresponse material is prepared from benzophenone, salicylate and metal oxide according to the mass ratio of 1: (1 to 2): (0.4 to 0.8); the plant extracting solution comprises aloe and a green tea extracting solution in a mass ratio of 1: (2-3). The obtained sunscreen lotion has good sunscreen performance, stability and the like, and is friendly to skin and free of irritation.
Owner:GUANGZHOU DEVA BIOTECH

Dispersing agent based on polyetheramidoamine phosphonic acids

InactiveEP4502005A1Benzoic acidEpoxy
The invention relates to 1) a process for the production of polyetheramidamine phosphonic acids or polyetheramidamine phosphonate salts or their aqueous solutions, wherein the process comprises the following steps: a) reaction of at least one salicylic acid ester as a starting compound for an alkoxylation reaction in the presence of at least one double metal cyanide (DMC) catalyst with at least one epoxide to give at least one polyether; b) reaction of the at least one polyether from step a) with at least one polyamine bearing at least two amino groups selected from the group consisting of primary and secondary amino groups to give at least one polyetheramidamine; c) reaction of the at least one polyetheramidamine from step b) with at least one aldehyde and phosphonic acid to give at least one polyetheramidamine phosphonic acid; and optionally d) dissolving the at least one polyetheramidamine phosphonic acid from step c) in water;and optionally e) complete or partial neutralization of the at least one polyetheramidamine phosphonic acid from step c) or its aqueous solution from step d) with at least one base to give at least one polyetheramidamine phosphonate salt or its aqueous solution; characterized in that (i) the at least one salicylic acid ester is selected from compounds of formula (1) wherein R is a hydrocarbon residue with at least three carbon atoms; and (ii) at least propylene oxide is used as the epoxide, and the at least one salicylic acid ester is first reacted with propylene oxide before an optional reaction with further epoxides; 2) products that can be prepared according to this process; 3) the use of these products as dispersing agents; 4) and hydraulically setting compositions containing these products.
Owner:EVONIK OPERATIONS GMBH

Low-dielectric insulating paint and application thereof

The invention relates to low-dielectric insulating paint and application thereof. The low-dielectric insulating paint comprises matrix resin, a solvent and a pore-forming agent, wherein the pore-forming agent is at least one of a salicylate derivative and a lactate derivative. According to the invention, at least one of a salicylate derivative pore-forming agent and a lactate derivative pore-forming agent is introduced into the insulating paint, and the porous low-dielectric polyimide insulating layer with smaller pore diameter and narrower distribution is prepared through coating and curing processes. No extra (such as high temperature, ultraviolet, high pressure, specific atmosphere and the like) conditions exist for the painting process, and the prepared enameled wire is good in appearance and free of the problems of bubbling or debonding and the like.
Owner:DONGHUA UNIV

A method for preparing raw film bulk ester using a microchannel continuous flow reactor

The invention discloses a method for preparing raw film bulk ester by using a microchannel continuous flow reactor, comprising: preheating a mixture of salicylic acid ester and isophorol, and then introducing the mixture into a microchannel continuous flow reactor with an ester exchange catalyst for reaction, and obtaining the raw film bulk ester by post-processing after the reaction is completed; the microchannel continuous flow reactor comprises one or N reaction units connected in series, each reaction unit being formed by connecting a microchannel reactor and a falling film evaporator in series. The method has mild reaction conditions, produces few by-products, has high reaction selectivity, and can realize continuous production.
Owner:SHANDONG NHU FINE CHEM SCI & TECH CO LTD +1

Composite catalyst and preparation method thereof, and preparation method of salicylate compound

The application provides a composite catalyst and a preparation method thereof, and a preparation method of a salicylate compound. The preparation method of the composite catalyst comprises the following steps: mixing a carbon carrier with a hydrotalcite for mixing treatment to prepare a mixture; and performing calcination treatment on the mixture to prepare the composite catalyst. When the composite catalyst prepared by the preparation method is used in an ester exchange reaction, the catalyst has high catalytic activity and is not prone to reaction with water, and can be repeatedly used.
Owner:RIANLON CORPORATION

Modified titanate catalyst, single-component RTV (Room Temperature Vulcanization) dealcoholization condensation type silicone sealant and preparation method thereof

The invention relates to a modified titanate catalyst, a single-component RTV (Room Temperature Vulcanization) dealcoholization condensation type silicone sealant and a preparation method of the single-component RTV dealcoholization condensation type silicone sealant. The salicylate is used for modifying titanium isopropoxide to obtain modified titanate, the modified titanate has high catalytic activity and excellent storage stability, and the single-component RTV dealcoholization condensation type silicone sealant prepared by taking the modified titanate as a catalyst has the advantages that the single-component RTV dealcoholization condensation type silicone sealant can be used for preparing the single-component RTV dealcoholization condensation type silicone sealant, and the service life of the single-component RTV dealcoholization condensation type silicone sealant is prolonged. The contradictory relationship between the curing rate and the storage performance of the sealant can be obviously improved. The single-component RTV dealcoholized condensed silicone sealant disclosed by the invention can simultaneously have relatively high curing rate and excellent storage stability, and still has very high reaction activity after being stored for a long time; and the adhesive has the advantages of good adhesive property, wide application range of base materials and good adhesive property with various base materials.
Owner:GUANGZHOU BAIYUN CHEM IND +1

Blood sucking insect pest evasion composition, and blood sucking insect pest evasion method using the composition

ActiveJP2025015653ABiocideCosmetic preparationsDiethyl toluamideSalicylic acid ester
To provide a blood sucking insect pest evasion composition capable of achieving an evasion function to blood sucking insect pests and continuously deodorizing bad odor attached to clothing.SOLUTION: A blood sucking insect pest evasion composition containing insect pest evasion components and perfume components, in which the insect pest evasion component is at least one selected from the group consisting of 3-(N-butylacetamide)ethylpropionate, icaridin, p-mentan-3, 8-diol, and N, N-diethyl toluamide. The perfume component is a compound that does not have an electron conjugate portion other than the electron conjugate portion derived from the benzene ring, benzoate ester structure, or salicylate structure has a carbon number of from 6 to 18, has a molecular weight of 98 to 270, has carbon atoms, hydrogen atoms and oxygen atoms, and does not have sulfur atoms, nitrogen atoms and halogen atoms.SELECTED DRAWING: None
Owner:DAINIHON JOCHUGIKU CO LTD

Refining method of salicylate compound

The invention provides a method for refining salicylate compounds. The method comprises the following steps: separating heavy components in a reaction solution containing the salicylate compounds from distilled fractions, and then rectifying the distilled fractions, the boiling point of the heavy component is higher than that of the salicylate compound; the boiling point of the distilled fraction is less than or equal to that of the salicylate compound. According to the method disclosed by the invention, the heavy component kettle residues are separated before rectification and purification, so that light components generated by continuous decomposition of the heavy components in the kettle residues under heating are reduced, and relatively high impurity residues in the extracted salicylate compounds are avoided.
Owner:LIANLONG (INNER MONGOLIA) NEW MATERIALS CO LTD +1

Hyaluronic acid derivatives and their preparation methods and uses

The present application discloses hyaluronic acid derivatives, specifically hyaluronic acid esters synthesized from hyaluronic acid or its salt and salicylic acid esters. The hyaluronic acid esters disclosed in the present application are characterized by good water solubility, low irritation, and mild properties, optimizing the stratum corneum. Furthermore, the water-soluble esters inhibit the penetration of salicylic acid into the stratum corneum and extend the duration of salicylic acid's action in the stratum corneum. The unique chemical structure of the salicylic acid hyaluronic acid esters of the present application immobilizes acidic functional groups, reducing the irritation of salicylic acid. The increased hyaluronic acid polysaccharide content effectively delays the penetration of salicylic acid into the deeper layers of the skin, prolonging its action time in the epidermis, targeting the stratum corneum and contributing to the long-term regulation of keratinocytes. The improved solubility of salicylic acid itself in the aqueous phase facilitates its use in formulations.
Owner:BLOOMAGE BIOTECHNOLOGY CORP LTD +1

Preparation process of salicylate compounds

The present invention provides a process for the preparation of salicylate compounds. Especially, the preparation of salicylate compounds comprises a carboxylation reaction of reacting the phenols to obtain the corresponding salicylate compounds under the carbon monoxide, and in presence of base in a suitable solvent. According to the present invention, the carboxylation reaction can be carried out under 2 MPa and 180 ℃. The process according to the present invention allows for the preparation of salicylate compounds such as 4, 4'-dihydroxy- [1, 1'-biphenyl] -3, 3'-dicarboxylic acid in a greener, safer and highly efficient manner, which is suitable for large-scale production.
Owner:SHANGHAI LINKCHEM TECHNOLOGY CO LTD

Preparation methods of aluminium fluoride complexes

A method for synthesizing an aluminium-fluoride complex obtainable by reacting together: a salt made of aluminium(III) and counterions of aluminium(III) other than chloride(I), and a fluoride anion; or a chelate bearing molecule precomplexed with aluminium(III), obtained from treating the chelate bearing molecule with a salt made of aluminium(III) and counterions of aluminium(III) other than chloride(I), and a fluoride anion; the fluoride being [19F]fluoride or radioactive [18F]fluoride; wherein the counterions of aluminium(III) other than chloride are selected from bromide, iodide, nitrate, phosphate, sulfate, sulphonate, hydroxide, any anionic salt of natural and non-natural amino acids, 2,4-pentanedionate, 8-hydroxyquinoline, acetate, acrylate, ascorbate, aspartate, benzenesulfonate, benzoate, besylate, bitartrate, camphorsulfonate, citrate, decanoate, esylate, fumarate, gentisate, gluconate, glutamate, glutarate, glycinate dihydroxide, glycolate, hexanoate, hydroxynaphthoate, isethionate, lactate, lactobionate, malate, maleate, malonate, mandelate, mesylate, methylsulfate, methylsulfonate, mucate, napsylate, octanoate, oleate, oxalate, pamoate, pantothenate, phthalate, polygalacturonate, propionate, salicylate, stearate, succinate, tartrate, teoclate, toluenesulfonate, trifluoroacetate, trifluoromethanesulfonate, and any combination thereof.
Owner:TRASIS

Polyaniline compositions, articles thereof, and methods thereof

The present disclosure provides compositions, articles thereof, and methods of forming compositions. In at least one aspect, a composition includes (1) an epoxy, (2) an amino or amido hardener, (3) a polyaniline, (4) a dopant selected from a triazolyl, a thiazolyl, a quinolinyl, a salicylate, a benzoate, a glycolate, a phosphate, a sulfonate, an oxalate, or combination(s) thereof; and (5) a pigment selected from titanium dioxide, silica, talc, mica, aluminium stearate, or combination(s) thereof. The polyaniline+dopant comprises greater than 6 wt %, by weight of the composition. In at least one aspect, a method includes introducing an acid form of a polyaniline to a hydroxide to form a polyaniline hydroxide. The method includes introducing a dopant to the polyaniline hydroxide to form a doped polyaniline.
Owner:THE BOEING CO

Application of algin salicylate and application of algin salicylate in acne-removing medical apparatus or skin care product

The invention relates to preparation and application of algin salicylate. The algin salicylate is prepared by reacting algin and salicylic acid under the catalysis of EDC and DMAP. The alginate salicylate disclosed by the invention firstly has an excellent antibacterial effect, and can inhibit the growth of propionibacterium acnes and staphylococcus aureus causing skin acnes; the traditional Chinese medicine composition has the advantages that the traditional Chinese medicine composition has good moisturizing and grease secretion inhibiting performance, can regulate water-oil balance of skin, can avoid water loss of the skin, can regulate excessive grease secretion, is low in cytotoxicity, irritation and inflammability, and can avoid irritation sensitivity caused by damage of a skin barrier. Algin salicylate is free of immunogenicity, good in air permeability, capable of keeping the moist environment of the skin for a long time, safe, non-toxic and convenient to apply. The acne-removing composition can be added into medical instruments or cosmetics with an acne-removing function, and has a good acne-removing effect.
Owner:INST OF OCEANOLOGY - CHINESE ACAD OF SCI

Method for producing salicylic acid ester

A method for producing a salicylic acid ester represented by general formula (2) below, in which salicylic acid and an alcohol represented by general formula (1) below are brought into contact with a solid acid catalyst at a reaction temperature of 50° C. to 200° C.X—R—OH  (1)(In the formula (1), R represents a linear or branched alkyl group having 1 to 6 carbon atoms. X represents a hydrogen atom or a hydroxyl group.)(In the formula (2), R and X are each as defined in the formula (1).)
Owner:UBE CORPORATION

Coatings comprising salicylates

PendingUS20250043137A1CoatingsEthyl salicylateEthyl group
The present application relates to a coating comprising at least one salicylate with at least 10 carbon atoms. At least one salicylate with at least 10 carbon atoms may comprise benzyl salicylate, octyl salicylate (2-ethyl hexyl salicylate), heptyl salicylate, hexyl salicylate, amyl salicylate, iso amyl salicylate, iso butyl salicylate, methyl salicylate, ethyl salicylate, or combinations thereof. Also described is a method of preparing the coating and an article containing the coating described herein.
Owner:SWIMC LLC

Preparation method and application of composite material

The invention discloses a preparation method and application of a composite material, according to the preparation method, non-woven flame-retardant polyester is subjected to PE lamination, then electron radiation is carried out in a salicylate ultraviolet absorbent, the ultraviolet absorbent can be grafted with a polyester layer and a PE layer in the radiation process to improve the binding force, and on the premise that the ductility is guaranteed, the tensile strength of the composite material is improved. Meanwhile, the tearing strength and the aging resistance of the composite material are improved; in addition, the material is endowed with water repellency, oil repellency and the like based on the characteristics of the lamination layer, can be widely applied to paint surface protection, such as automobile paint surface protection as an automobile cover, and has a wide application prospect.
Owner:WUHAN INST OF TECH

Method for separating and purifying effective components of gaultheria yunnanensis

The invention belongs to the technical field of gaultheria yunnanensis extraction, and provides a method for separating and purifying effective components of gaultheria yunnanensis. The method for separating and purifying the effective components of the gaultheria yunnanensis comprises the following steps: mixing gaultheria yunnanensis powder and a solvent, and carrying out ultrasonic extraction to obtain an extracting solution; extracting the extracting solution by adopting a mixed solvent to obtain an extraction phase and a raffinate phase; and removing the solvent from the raffinate phase to obtain the lignan effective component. And removing the solvent from the extract phase to obtain the salicylate effective component. According to the method disclosed by the invention, the gaultheria yunnanensis powder is extracted by using the mixed solvent of the ethyl acetate and the methanol, so that lignan active ingredients and salicylate active ingredients in the gaultheria yunnanensis can be extracted at the same time, and efficient co-extraction of multiple ingredients is realized; a mixed solvent of n-butyl alcohol and dichloromethane is adopted to extract an extracting solution, and lignan effective components and salicylate effective components can be efficiently separated at the same time only through one-time extraction.
Owner:BAOSHAN DRUG INSPECTION & TESTING RESEARCH INSTITUTE

Sanitary article comprising mosquito and mite repellent, and use of acetate or like to repel mosquitoes and mites from sanitary article

The purpose of the present disclosure is to provide a sanitary article capable of repelling not only mosquitoes but also mites by mosquito and mite repelling components. This sanitary article has the following feature. This sanitary article (1) comprises a mosquito and mite repellent (13) containing mosquito and mite repelling components that include at least one among acetate and salicylate.
Owner:UNI CHARM CORP

Environment-friendly fluorine-free anticorrosive coating for aluminum alloy surface and preparation method thereof

The application relates to the technical field of anticorrosive coatings, and discloses an environment-friendly fluorine-free aluminum alloy surface anticorrosive coating and a preparation method thereof, which comprises the following steps: based on ion exchange, single-quaternary ammonium salt seven (salicylate group) cage polysilsesquioxane is used to perform intercalation modification treatment on sodium-based montmorillonite to obtain a stable interlayer spacing type montmorillonite loaded with salicylate groups and polysilsesquioxane groups; based on the pi-pi stacking effect between phenyl groups, the stable interlayer spacing type montmorillonite is compounded with a bisphenol A glycidyl ether type epoxy resin, and is subjected to emulsification treatment through phase inversion to obtain a corrosion-resistant and weather-resistant water-based epoxy resin emulsion; and the environment-friendly fluorine-free aluminum alloy surface anticorrosive coating is prepared by taking the corrosion-resistant and weather-resistant water-based epoxy resin emulsion as a film-forming raw material. The coating product not only has excellent corrosion resistance, but also has high weather resistance, and can resist corrosion media and environmental aging at the same time when used on the surface of an aluminum alloy.
Owner:DONGGUAN HUASHEN JINTAI NEW MATERIAL TECH CO LTD

A photo-glycyrrhizin salicylate and application thereof

This invention relates to the fields of cosmetics and pharmaceutical chemistry, and discloses a glycyrrhizin salicylate ester and its applications. The structural formula of the glycyrrhizin salicylate ester is shown in Formula I. The glycyrrhizin salicylate ester of this application uses glycyrrhizin and salicylic acid as starting materials, and combines the two active molecules into one through dehydration ester condensation, fundamentally solving the problem of easy oxidation and inactivation of glycyrrhizin, and significantly improving chemical stability. At the same time, this structure cleverly masks the strongly acidic carboxyl group of salicylic acid, resulting in a significant reduction in skin irritation of the final product, making it far milder than physical mixtures, with better tolerance and suitability for a wider range of skin types. The glycyrrhizin salicylate ester of this application combines the excellent whitening and antioxidant effects of glycyrrhizin with the excellent keratin-regulating and anti-inflammatory capabilities of salicylic acid, and has broad application prospects in the preparation of topical products for skin whitening, spot fading, anti-inflammation, anti-acne, and anti-photoaging.
Owner:NANJING CHEMPION BIOTECHNOLOGY CO LTD

Synthesis method of 3-trifluoromethyl-1, 4-benzoxaza compound

The invention relates to the technical field of pharmaceutical and chemical synthesis, in particular to a synthesis method of a 3-trifluoromethyl-1, 4-benzoxaza # imgabs0 # compound, which comprises the following steps: adding a compound 1, a compound 2 and an additive into a reactor, stirring for 4 hours under the air condition of 100 DEG C, cooling to 0 DEG C after the reaction is finished, adding alkali, and reacting overnight. The preparation method comprises the following steps of: extracting, distilling under reduced pressure to obtain a crude product, and purifying by column chromatography and thin-layer chromatography to obtain the 3-trifluoromethyl-1, 4-benzoxaza # imgabs 1 # compound. According to the invention, a trifluoromethyl imine ylide compound and a salicylate compound are taken as raw materials, and the 3-trifluoromethyl-1, 4-benzoxaza # imgabs2 # compound is synthesized by a one-pot method. The method has the advantages of simple synthesis steps, easily available raw materials, no need of intermediate separation, no need of precious metal catalysis, good functional group compatibility and the like; reaction conversion is high, cost is low, and industrial production is facilitated.
Owner:NANTONG UNIV