52 results about "Benzoquinone Compound" patented technology

The invention provides a preparation method of a p-benzoquinone compound. The preparation method is characterized in that the p-benzoquinone compound is prepared from a phenol compound with high selectivity under a mild condition by taking oxygen or oxygen-containing gas in a liquid solvent as an oxidizing agent in the presence of a transitional metal compound serving as a main catalyst and N-substituted hydrocarbon oxy-compound serving as an assistant catalyst.

The present invention provides a positive electrode active material for nonaqueous solvent secondary batteries, comprising, as an active ingredient, a 1,4-benzoquinone compound having lower alkoxy groups as substitutes, and a nonaqueous secondary battery comprising the positive electrode active material as a constituent. According to the invention, a nonaqueous secondary battery having a high energy density and excellent cycle characteristics can be obtained by using a positive electrode active material composed of an organic compound with a low environmental load.

An electrophotographic photoconductor including an electroconductive support and a photoconductive layer provided thereon, wherein the photoconductive layer includes a charge generating material, an electron transporting material and a hole transporting material, the electron transporting material being a diphenoquinone compound represented by formula (1) described herein, the hole transporting material being a compound represented by formula (2) described herein.

The invention relates to a simple, fast, highly-selective and highly-sensitive colorimetric detection method for an explosive TNT. According to the method, an anion-pi compound formed by interaction between anions in anion Lewis base and TNT molecules is used; the anion-pi compound may lead to increase of electronegativity of a TNT benzene ring, so people can selectively detect existence of TNT through observation of color changes of an inspected substance with their eyes or a UV-visible spectrophotometer. The method provided by the invention can eliminate interference of other nitrobenzene compounds and benzoquinone compounds and has good selectivity and sensitivity to TNT existing in different states. According to the invention, the color changes can be determined by using the UV-visible spectrophotometer, or even naked eyes, without a complex apparatus and a professional technician, so operation of the method is simple and fast.

The present invention discloses a method for synthesizing a benzoquinone compound through catalytic oxidation of a phenol compound, and belongs to the technical field of synthesis of benzoquinone compounds. The method comprises: adding a reactant phenol compound, a solvent, a solid catalyst (onion carbon and the like) and an oxidant t-butyl hydroperoxide into a reactor, carrying out ultrasonic treatment to form a suspension, heating the suspension to a temperature of 70-100 DEG C, carrying out a reaction for 2-16 h, separating the reaction mixture to obtain a solid catalyst and a liquid mixture containing the benzoquinone compound, and carrying out separation purification on the liquid mixture to obtain the product benzoquinone compound. According to the present invention, the operation process is simple, and the used non-metal catalyst has characteristics of no corrosion, low price, green environmental protection and recycling; and the methyl phenol conversion rate is high, and the selectivity of the target product methyl-p-benzoquinone is good.

The invention provides a separation / purification method of a p-benzoquinone compound. The method is characterized in that an accelerator for promoting aggregation / self assembly of the p-benzoquinone compound is added to a mixed liquid containing p-benzoquinone compound, so as to realize precipitation of the p-benzoquinone compound at or below room temperature and separation / purification of the p-benzoquinone compound.

The invention relates to a high-efficiency preparation method of p-benzoquinone compounds. According to the high-efficiency preparation method, a p-dihydroxybenzene compound is taken as a raw material, and the p-benzoquinone compounds are prepared in the presence of an alkali / alkali-earth metal catalyst. Advantages are that: 1) the high-efficiency preparation method is simple, and amplification of operation processes and industrialized production can be realized easily; 2) a plurality of the p-benzoquinone compounds can be synthesized, and the high-efficiency preparation method is an universal method used for preparing the p-benzoquinone compounds.

The invention relates to a benzoquinone derivative from aspergillus aculeatus and application of the benzoquinone derivative. The structural formula of the compound is shown in the specification. Experiments prove that the benzoquinone compound has good antitumor activity. The benzoquinone derivative can be used for preparing cell proliferation inhibition drugs or antitumor drugs for antitumor study.

The invention relates to a synthesis method of oxo-isophorone. The method is characterized in that 3, 5, 5-trimethyl-4-hydroxyl-2-cyclohexene-1-one (HIP) is used as a raw material, p-benzoquinone compounds (II) are used as an oxidizing agent and a catalyst; oxygen or air is introduced, and an oxidation reaction is carried out in an inert solvent, so that the oxo-isophorone (KIP) and hydroquinone compounds (III) are generated.

The invention discloses a conjugated polymer quantum dot as well as a preparation method and application thereof, and the preparation method comprises the following steps: 1) in the presence of a catalyst, carrying out a contact reaction on a phenylenediamine compound and a benzoquinone compound in water; and 2) adjusting the pH value of the reaction system to be neutral or alkaline, and purifyingto obtain the conjugated polymer quantum dot. The preparation method has the characteristics of rapidness, low cost and easiness in realization, and the conjugated polymer quantum dot has excellent fluorescence imaging characteristics, so that the conjugated polymer quantum dot can be applied to biological imaging.

The invention discloses fluorine-containing polyether with a low dielectric property and a preparation method thereof. The fluorine-containing polyether with the low dielectric property is prepared bytaking anthracene, p-benzoquinone compounds and octafluorocyclopentene as raw materials. The prepared fluorine-containing polyether with the low dielectric property has the characteristics of low dielectric constant, low dielectric loss, good mechanical property and excellent thermal property, can be used for preparing a low-dielectric polymer-based material, and is widely applied to the fields of electronic packaging, information communication, aerospace and other high-tech industries. The preparation method of the fluorine-containing polyether with the low dielectric property is simple, high in yield and suitable for industrial production.

An aspect of the present invention relates to a radiation-curable vinyl chloride resin composition comprising a vinyl chloride resin containing a radiation-curable functional group, and / or starting material compounds thereof, as well as a benzoquinone compound.

The invention provides a method for synthesizing a chiral tetrahydrobenzoxepine compound through asymmetric cycloaddition reaction catalyzed by gold, which comprises the following steps: in a solvent A, under the catalysis of a gold catalysis system, performing asymmetric [3 + 4] cycloaddition reaction on an alkyne ketene compound I and an o-methylene benzoquinone compound II to obtain the chiral tetrahydrobenzoxepine compound. A chiral tetrahydrobenzoxazepine compound III is obtained; the gold catalysis system is composed of a gold catalyst, a chiral ligand and a silver salt, and the chiral ligand has a structure as shown in a formula IV. The tetrahydrobenzoxepine compound is constructed through the asymmetric cycloaddition reaction catalyzed by gold, and the method has the advantages that the operation is convenient and simple, the yield is high, the reaction raw materials are low in price and easy to obtain, the catalyst cost is low, the substrate application range is wide, the diastereoselectivity is good, the para-selectivity is high and the like.

The invention provides a method for separating an m,p-cresol mixture by adopting a selective oxidation catalyst. According to the method, the m,p-cresol mixture can be oxidized by using the selectiveoxidation catalyst, m-cresol in the mixture is completely oxidized into a benzoquinone compound, and p-cresol does not react. After the oxidation reaction is carried out, the boiling point differencebetween the benzoquinone compound (186-187 DEG C) and the p-cresol is significant, therefore, the complete separation of the p-cresol can be achieved through rectification. According to the separationmethod, during the oxidation reaction, oxygen or air is used as an oxidizing agent, the reaction conditions are very mild, the reaction operation is simple, the production cost is low, and the industrial production is easy. In addition, the generated benzoquinone compound through the reaction is an important dye and a raw material of an antioxidant, the high added value utilization can be achieved, and the economic benefit is good.

Method for producing polyphenylene ether, comprising preparing a polymerization solution of 10-25 parts by mass of a phenolic compound (M) and 75-90 parts by mass of an aromatic solvent (A) with the total of the compound and the solvent being 100 parts by mass, and 0.1-10 parts by mass of a catalyst (C) containing a metal salt; performing oxidative polymerization of the phenolic compound (M) by passing oxygen-containing gas through polymerization solution; stopping polymerization by mixing aqueous chelating agent solution into polymerization solution; subjecting a diphenoquinone compound produced as a by-product to quinone binding process or removal by reduction; and obtaining polyphenylene ether by separating aqueous phase through liquid-liquid separation. In the method for producing a polyphenylene ether, 0.001-0.004 part by weight of an ion catalyst (D) is added into the polymerization solution before the liquid-liquid separation.

The invention relates to a colored flame retardant charring agent tetraPEPA oxy-p-benzoquinone compound and a preparation method thereof. The structure of the compound is shown as the following formula in the specification. The preparation method includes: in a reactor equipped with a stirrer, a thermometer and a high-efficiency reflux condensation tube, adding a proper amount of an organic solvent and tetrachloro-p-benzoquinone, then adding a PEPA sodium salt that is 4-5 times the mole of tetrachloro-p-benzoquinone, performing heating to 100-160DEG C, carrying out heat preservation reaction for 6-9h, performing pumping filtration, removing sodium chloride, cooling and crystallizing the filtrate, and conducting filtering and drying, thus obtaining the reddish brown colored flame retardantcharring agent tetraPEPA oxy-p-benzoquinone. The compound provided by the invention has excellent flame retardant and charring properties, also has coloring effect, and is suitable for use as a flameretardant charring agent and coloring agent for nylon, polyester, polyurethane, rubber, polyolefin, unsaturated resin and other materials. Also the preparation method has the characteristics of one-step reaction, simple process and low equipment investment, and is easy to realize industrial production.

The invention relates to the field of biological medicines, and discloses application of short-chain quinone compounds in preparation of migraine treatment medicines. The short-chain quinone compoundscomprise a short-chain naphthoquinone compound, a short-chain benzoquinone compound, a short-chain phenanthrenequinone compound and a short-chain anthraquinone compound. And the short chain is a sidechain with a carbon chain length of 0-12. The short-chain quinone compound (SCQ) is applied to treatment of migraine for the first time, the treatment effect is remarkable, toxic and side effects arelow, and the improvement of the life quality of a patient is superior to the improvement of the highest recommended level of medicines for treating migraine at present. The compounds are of great significance to treatment of migraine which is a disability disease with the highest global morbidity as well as application and popularization of SCQ serving as a medicine. The invention provides saferand more excellent treatment for vast migraine patients, and brings hope for solving the treatment difficulty of migraine.

The invention discloses a magnetic silicon-lithium catalyst as well as a preparation method and application thereof, and belongs to the field of chemical materials. The preparation method comprises the following steps: designing and synthesizing a magnetic Fe3O4@ SiO2 composite carrier, mixing lithium chloride, Fe3O4@ SiO2 and methanol, carrying out reflux reaction at 50-130 DEG C for 2-72 hours,performing cooling, carrying out rotary evaporation to remove excessive methanol after the reaction is finished, carrying out suction filtration, washing, and drying to obtain the silicon-lithium catalyst. The prepared magnetic silicon-lithium catalyst can be used in the synthesis of benzoquinone compounds, the chemical selectivity of the product is very high and can reach 100%, and the yield is over 90%; the catalyst can be recycled by an external magnet, the loss of active components is less, and the cost is saved. In addition, the catalyst provided by the invention can also be used for catalyzing bisphenol F synthesis, and has high reaction activity and selectivity.

An aspect of the present invention relates to a radiation-curable polyurethane resin composition comprising a polyurethane resin containing a radiation-curable functional group and / or starting material compounds thereof, as well as component C in the form of a phenol compound, and component D in the form of at least one compound selected from the group consisting of a piperidine-1-oxyl compound, a nitro compound, a benzoquinone compound and a phenothiazine compound.