14 results about "Anthrone" patented technology

The invention discloses a disubstituted alkyl azaanthrone visible light initiator, a preparation method and an application of the disubstituted alkyl azaanthrone visible light initiator in a thiol-olefin photopolymerization system. Under the protection of inert gas, a 2, 4-disubstituted alkyl heterocyclic anthrone compound is dissolved in an organic solvent, excessive alkali is added, and a reaction is carried out under the protection of inert gas to obtain the disubstituted alkyl azaanthrone visible light initiator. And slowly dropwise adding an excessive amount of an organic solution of an acyl chloride compound in an ice-water bath, reacting at room temperature, stopping the reaction after TLC (Thin Layer Chromatography) detects that the reaction is complete, carrying out suction filtration, concentrating filtrate, and purifying to obtain the novel disubstituted alkyl azacyclo-anthrone high-efficiency visible light initiator. The novel disubstituted alkyl azacyclo-anthrone compound obtained in the invention realizes double-bond copolymerization of sulfydryl in a thiol polymeric monomer and a vinyl polymeric monomer; the novel disubstituted alkyl azacyclo-anthrone compound obtained in the application can initiate and cure a prepolymer containing a mercaptan-olefin free radical photopolymerization system, so that the application range of the compound in a free radical photocuring system is widened.

The embodiment of the present disclosure discloses a kind of azaxanthene fluorescent dyes and preparation method thereof. Among them, azaxanthene fluorescent dyes have the structure shown in general formula (a);The preparation method of azaxanthene fluorescent dyes includes: halogenated benzoic acid and aniline derivative reaction, generate diphenylamine derivative;Diphenylamine derivative is dehydrated and cyclized to generate azaxanthone derivative;The amino group of the azaxanthone derivative is methylated to generate the first nitrogen methyl anthrone derivative;The first nitrogen methyl anthrone derivative is removed from the first protecting group to generate the second nitrogen methyl anthrone derivative;The phenolic hydroxyl group of the second nitrogen methyl anthrone derivative is protected by the second protecting group to obtain the third nitrogen methyl anthrone derivative;The third nitrogen methyl anthrone derivative is reacted with grignard reagent, and the second protecting group is removed under acidic conditions to obtain azaxanthene fluorescent dye.The azaxanthene fluorescent dye can have high luminous efficiency under acidic conditions.

The invention discloses a disubstituted halogenated azaanthrone visible light initiator, a preparation method and application of the disubstituted halogenated azaanthrone visible light initiator in an acrylate photopolymerization system. The method comprises the following steps: dissolving a 2, 4-disubstituted halogenated azacyclo-anthrone compound in an organic solvent under the protection of inert gas, adding excessive alkali, slowly dropwise adding excessive organic solution of an acyl chloride compound in an ice-water bath, reacting at room temperature, detecting that the reaction is complete by TLC (Thin Layer Chromatography), stopping the reaction, performing suction filtration, concentrating filtrate, and drying to obtain the 2, 4-disubstituted halogenated azacyclo-anthrone compound. And purifying to obtain the novel disubstituted halogenated azacyclo-anthrone high-efficiency visible light initiator. The novel disubstituted halogenated azacyclo-anthrone high-efficiency visible light initiator not only shows better solubility in an organic solvent and resin, but also shows higher polymerization efficiency in a photocuring system, so that the application range of the novel disubstituted halogenated azacyclo-anthrone high-efficiency visible light initiator in a free radical photocuring system is widened.

The present application belongs to the technical field of traditional Chinese medicine component detection method, and particularly relates to a content determination method of trans-emodin di-anthrones in Radix Polygoni Multiflori, wherein Radix Polygoni Multiflori powder is taken, a mixture of water and cellulase is added in a mass ratio of 100:1-2, ultrasonic treatment is performed, then anhydrous ethanol is added, ultrasonic treatment is performed, components including trans-emodin di-anthrones are extracted, filtration is performed, the filtrate is evaporated to dryness, an acid solution containing sulfur elements is added for dissolution, a water bath is performed at 55-65 DEG C, it is placed at room temperature, ethyl acetate is added for extraction, so as to remove impurity components remaining in the acid solution layer, improve the purity of trans-emodin di-anthrones, facilitate liquid chromatography separation, methanol is added for dissolution, and a test sample solution is obtained; liquid chromatography is used to detect the content of trans-emodin di-anthrones in the test sample solution. The method has strong specificity, good reproducibility, stability and precision, and can effectively and accurately detect the content of trans-emodin di-anthrones in Radix Polygoni Multiflori.

[Technical Problem] To provide a rosin phenolic resin composition with good color tone. [Technical Means] A rosin phenolic resin composition comprising a rosin phenolic resin as a reactant of rosin (A) and phenol (B), and at least one compound (C) selected from the group consisting of xanthones, thioxanthones, acridinones and anthrones.

The technical scheme of the present application discloses a plastic film for providing high-quality light environment, which comprises the following components in parts by weight: 9,9-dianthraquinone 4-5 parts, pyrene anthrone 6-7.5 parts, anthracene-D10 4-6 parts, auxiliary agent 7.2-10.6 parts, and resin 70-80 parts. The preparation method comprises the following steps: S1, uniformly mixing 9,9-dianthraquinone, pyrene anthrone and anthracene-D10, heating to melting in an oxygen-free reaction kettle, cooling, and then crushing by a high-speed pulverizer to obtain a powder with a particle diameter of less than 100 nm; S2, mixing the powder with the auxiliary agent in a double-screw extruder, and then shearing and granulating to obtain a high-quality light environment additive master batch; and S3, mixing the high-quality light environment additive master batch with the resin, and preparing a plastic film by a flow casting and rolling process or a blowing process. The prepared plastic film effectively improves the photosynthetic rate of plants and significantly improves the quality and yield of plants.

This invention belongs to the field of fine chemicals and related chemical technologies, and relates to a method for preparing spirofluorenanthrone compounds. Using 2-phenylbenzyl chloride and its derivatives and 2-bromobenzophenone and its derivatives as raw materials, the mixture is reacted in a solvent at 150 °C for 48 hours under the action of a catalyst, ligand, and base to obtain the spirofluorenanthrone compound. The method of this invention can synthesize spirofluorenanthrone compounds in one step and has advantages such as simple operation, high conversion rate, mild conditions, no use of heavily polluting reagents, and more diverse product structures. Low-temperature phosphorescence testing of the product revealed its potential application value in the field of organic optoelectronic materials such as OLEDs.

The application discloses application of pyrazole anthrone in strigolactone analogues. The pyrazole anthrone in the scheme can be used as a strigolactone analogue to regulate the length of a hypocotyl of a plant, promote the expression of a key inhibitor of a strigolactone signal transduction pathway SMXL2 , SMXL6 , SMXL7 , SMXL8 , increase the length and quantity of root hairs, and regulate the growth and development of the plant, and has similar effects to the strigolactone analogue pyrazole anthrone; the pyrazole anthrone is low in price, can be applied to various plants, has little environmental pollution, and can be applied on a large scale in agricultural production.

The invention discloses a cladosporium fulvum genetically engineered bacterium with high yield of protohypericin as well as a construction method and application of the cladosporium fulvum genetically engineered bacterium. According to the cladosporium fulvum genetically engineered bacterium constructed by the invention, a hygromycin resistance gene hph is introduced into cytochrome P450 enzyme RugGT452P-R160D, and short-chain dehydrogenase ClaC, dehydratase ClaB and anthrone oxidase ClaH2 genes in cladosporium fulvum ACCC37291 are knocked out and replaced; meanwhile, the copy number of a transcription factor ClaE and a transcription auxiliary factor ClaA gene is increased, so that the genetically engineered bacterium is obtained. The strain is cultured for 10 days under the conditions that the temperature is 22 DEG C, the speed is 300 rpm and the ventilation capacity is 2 vvm, and the original hypericin fermentation yield reaches 2.06 g / L. The cladosporium fulvum genetically engineered bacterium constructed by the invention can be used for efficiently preparing the protohypericin through a fermentation method and is environment-friendly.

The invention discloses a preparation method of the visible light initiator, which comprises the following steps: under the protection of inert gas, dissolving a 2, 4-disubstituted oxygen / sulfur heterocyclic anthrone compound in an organic solvent, adding excessive alkali, slowly dropwise adding excessive organic solution of acyl chloride compound in ice-water bath, reacting at room temperature, detecting that the reaction is complete by TLC (Thin Layer Chromatography), stopping the reaction, carrying out suction filtration, and concentrating filtrate, thereby obtaining the visible light initiator. And purifying to obtain the novel disubstituted heterocyclic anthrone efficient visible light initiator. The invention also provides an application of the compound as a photoinitiator in an acrylate photopolymerization system.

The invention discloses a disubstituted alkyl azaanthrone visible light initiator, a preparation method and application of the disubstituted alkyl azaanthrone visible light initiator in a vinyl ether photopolymerization system. The method comprises the following steps: dissolving a 2, 4-disubstituted alkyl azacyclo-anthrone compound in an organic solvent under the protection of inert gas, adding excessive alkali, slowly dropwise adding excessive organic solution of an acyl chloride compound in an ice-water bath, reacting at room temperature, detecting that the reaction is complete by TLC (Thin Layer Chromatography), stopping the reaction, carrying out suction filtration, and concentrating filtrate, thereby obtaining the 2, 4-disubstituted alkyl azacyclo-anthrone compound. And purifying to obtain the novel disubstituted alkyl azacyclo-anthrone high-efficiency visible light initiator. The novel disubstituted alkyl azacyclo-anthrone high-efficiency visible light initiator not only shows better solubility in an organic solvent and resin, but also shows higher polymerization efficiency in a light curing system, so that the application range of the novel disubstituted alkyl azacyclo-anthrone high-efficiency visible light initiator in a free radical light curing system is widened.

The invention discloses an AMPK agonist and application thereof, and belongs to the technical field of medicinal chemistry, the AMPK agonist simultaneously has anthrone and benzimidazole structures and can be synthesized by taking anthrone compounds, NaH, epichlorohydrin and benzimidazole as raw materials, the synthesis steps are simple and efficient, the AMPK agonist is combined with a beta-regulatory subunit of AMPK to directly activate an AMPK signal channel, and the AMPK agonist can be used for preparing a medicine for treating AMPK. The compound can be used for regulating cell metabolism balance and preventing or treating AMPK-mediated diseases by activating AMPK, particularly can be used for inducing tumor cell apoptosis and inhibiting tumor growth, and has a wide application prospect in the field of tumor treatment.

This invention discloses a dual-ratio optical detection probe, its preparation method, and its application, comprising the following steps: dispersing 16,17-dihydroxyanthrone violet and anhydrous potassium carbonate in N,N-dimethylformamide, stirring, then rapidly adding 4-bromomethylphenylboronic acid pinacol ester, and reacting at 120°C for 12 hours; slowly adding the reaction solution dropwise into methanol, allowing it to settle for 24 hours, then filtering, washing, and extracting three times, collecting the organic layer by rotary evaporation and drying, and purifying by silica gel column chromatography to obtain the anthrone violet derivative VTP; mixing a tetrahydrofuran solution of the anthrone violet derivative VTP at a predetermined concentration with a tetrahydrofuran solution of an amphiphilic surfactant, and injecting the mixture into a predetermined volume of water, purifying to obtain a water-soluble optical probe. This invention solves the problems of low stability, poor specificity, and high cost of most near-infrared fluorescent or photoacoustic organic probes, exhibiting excellent water solubility and biocompatibility, and can eliminate interference from other reactive oxygen free radicals under normal physiological conditions.

Provided are a composite material and a preparation method therefor, and a quantum dot light-emitting diode. The composite material comprises a quantum dot and a ligand bonded to the surface of the quantum dot, wherein the ligand is an anthracene compound, and the anthracene compound comprises at least one of anthraquinone, anthranol, anthrone, an anthraquinone derivative, an anthranol derivative and an anthrone derivative. The ligand of the composite material at least has a strong adsorption group such as C═O or —OH, making the ligand easier to adsorb on the surface of the quantum dot compared with impurity ions, such that defects on the surface of the quantum dot are prevented from being filled with the impurity ions, and the electrical conductivity of the composite material is improved.