17 results about "Diaryl ether" patented technology

The application discloses a kind of lignin-based aryl formate and diaryl ether compound and synthesis method thereof, belong to the technical field of organic compound synthesis.The method uses lignin β-O-4 model compound as reaction raw material, under the condition of oxidant and alkali, after heating reaction, then join diaryl iodonium under air atmosphere and stir, obtain aryl formate and diaryl ether compound.The synthesis method of the application has the advantages of simple operation, mild reaction condition and high product selectivity, provides a new way for the preparation of aryl formate and diaryl ether compound.

The invention discloses a quinolinic acid diaryl ether derivative, a preparation method and application thereof and a bacteriostatic agent or bactericide, relates to the technical field of medicinal chemistry, solves the problems that existing pesticides are high in toxicity and not environmentally friendly, easily cause drug resistance of pathogenic bacteria and possibly have negative effects on the environment and an ecological system, can efficiently prevent and treat fungal diseases of plants, and also can effectively prevent and treat the pathogenic bacteria of the plants. The quinolinic acid diarylether derivative has the advantages that the quinolinic acid diarylether derivative has excellent inhibition activity on agricultural fungi such as rhizoctonia solani, sclerotinia sclerotiorum, botrytis cinerea, fusarium graminearum and fusarium pseudograminearum, and the quinolinic acid diarylether derivative has the characteristics of simple synthesis process, cheap and easily available raw materials, good control effect, wide bactericidal spectrum and the like.

Herein described are diaryl ether compounds having the structure (I)as well as a method for their manufacture from lignin.

The application provides a preparation method of a diaryl ether compound with higher yield, and belongs to the field of organic synthesis. The preparation method of the diaryl ether compound provided by the application has the following reaction formula: the method comprises the following steps: mixing and reacting a compound 1 or a salt thereof, a compound 2, a solvent and a base reagent, and then the diaryl ether compound is obtained. In the application, at least one of sodium carbonate, cesium carbonate or potassium carbonate is used as the base reagent, so that the target compound can be prepared with higher yield. In the application, the cesium salt is used as a reaction catalyst, so that the reaction time can be effectively shortened, and the reaction yield is further improved.

The invention discloses a high-strength polyetherketoneketone polymer and a preparation method thereof, and belongs to the technical field of macromolecular special engineering plastics. The high-strength polyether ketone ketone polymer is obtained by reacting diaryl ether, paraphthaloyl chloride, isophthaloyl chloride and anhydrous aluminum trichloride in a molar ratio of 1: m: (1-m): (3-5), wherein m is 0-1. According to the high-strength PEKK polymer, two large condensed rings and one benzene ring form a minimum repetitive unit, and compared with a traditional PEKK polymer which forms a minimum repetitive unit by three benzene rings, a molecular main chain of the high-strength PEKK polymer has higher rigidity, and an engineering material prepared from the high-strength PEKK polymer also has higher mechanical strength and high temperature resistance.

The invention relates to the technical field of chemistry, and discloses a diarylether beta-nitroethylene compound as well as a preparation method and application thereof. The compound is a compound as shown in a formula I or a stereoisomer, a geometric isomer, a tautomer, a racemate, nitrogen oxide, hydrate, solvate and pharmaceutically acceptable salt of the compound as shown in the formula I. In the formula I, R is a mono-substituent or multi-substituent at any position of a six-membered aromatic ring, and the substituents can be the same or different and can be different from each other. R is selected from at least one of hydrogen, halogen, alkyl, alkoxy or halogenated alkyl; r1 is hydrogen, methyl or bromine; r2 is hydrogen or chlorine; x is carbon or nitrogen. The compound can be used for treating plant diseases and inhibiting the growth of water-blooming cyanobacteria.

The invention discloses a synthesis method of a diaryl ether compound, which comprises the following steps: under the protection of inert gas, adding a catalyst and iodide into a compound A and a compound B, fully reacting at 90-130 DEG C, diluting the reaction mixture with water, extracting with an organic solvent, merging organic phases, drying, and purifying to obtain the diaryl ether compound. The raw materials are wide in source, the catalytic system is green and efficient, the synthetic route is simple and efficient, and the obtained product is high in purity and high in applicability.

The application provides a method for dissolving and recycling PET, comprising the following steps: 1) mixing the PET to be recycled with a mixed solvent system composed of a good solvent and a di-arylether under the protection of an inert atmosphere, stirring and dissolving under a first temperature condition to obtain a first material; the good solvent is propylene carbonate and / or ethylene carbonate; the di-arylether is at least one of diphenyl ether, butyl phenyl ether and dibenzyl ether; the first temperature is 160-200 DEG C; 2) cooling the first material to a second temperature, adding anti-solvent water to precipitate and separate out the PET; 3) separating, washing and drying the material obtained in the step 2) to obtain the recycled PET. The method for dissolving and recycling PET has the whole process in line with the green development route, effectively avoids the problem of degradation of the PET under high temperature dissolving, and the performance of the recycled PET is comparable to that of the raw material. Meanwhile, the PET yield can be as high as 97%, and the method has important large-scale industrial application value.

The invention provides a method for dissolving and recovering PET (polyethylene terephthalate), which comprises the following steps: 1) under the protection of inert atmosphere, mixing PET to be recovered with a mixed solvent system consisting of a good solvent and diaryl ether, and stirring and dissolving under a first temperature condition to obtain a first material; the good solvent is propylene carbonate and / or ethylene carbonate; the diaryl ether is at least one of diphenyl ether, butyl phenyl ether and dibenzyl ether; the first temperature is 160-200 DEG C; 2) cooling the first material to a second temperature, and adding anti-solvent water to precipitate PET; (3) separating, washing and drying the material obtained in the step (2) to obtain the recycled PET. The whole process of the method for dissolving and recycling the PET accords with a green development route, the problem of high-temperature dissolution and degradation of the PET is effectively avoided, the performance of the recycled PET can be comparable with that of the raw material, meanwhile, the yield of the PET can reach 97%, and the method has important large-scale industrial application value.

This invention discloses the use of a quinazoline-diaryl ether derivative in inhibiting and / or controlling pathogenic microorganisms, relating to the field of medicinal chemistry. It solves the technical problems of existing pesticides being highly toxic, prone to resistance, and lacking a suitable combination of quinazoline and diaryl ether compounds. The quinazoline-diaryl ether derivative of this invention exhibits potential inhibitory effects on plant bacteria such as *Rhizoctonia solani*, *Rhizoctonia solani*, and *Rhizoctonia solani*, as well as plant fungi such as *Rhizoctonia solani*, *Sclerotinia sclerotiorum*, *Botrytis cinerea*, *Bacillus oryzae*, and *Fusarium graminearum*, and agricultural pathogenic nematodes, demonstrating antibacterial activity and a broad spectrum.

The invention discloses a novel chemical upgrading and recycling method for polysulfone special engineering plastics, and belongs to the technical field of solid waste treatment. According to the method disclosed by the invention, high-yield metal is adopted as a photocatalyst, and various commercialized polysulfone plastic resins and (waste) polysulfone special engineering plastics can be degraded into diaryl ether high-added-value fine chemicals in a high-selectivity manner under room-temperature visible light illumination. The method disclosed by the invention has the advantages of low energy consumption, low cost, less pollution, single selectivity and the like, and has a wide application prospect in the field of high-added-value recovery treatment of the waste polysulfone special engineering plastics.

The application provides a diaryl ether compound and a preparation method and application thereof, and belongs to the technical field of agricultural chemicals. Substituted phenylthiol, anhydrous potassium carbonate and N,N-dimethylformamide are mixed to perform a first reaction to obtain an intermediate product; the intermediate product and methyl 2-nitro-5-chlorobenzoate are mixed to perform a second reaction to obtain the diaryl ether compound. The bioactivity determination result shows that the diaryl ether compound prepared by the application has good insecticidal activity and can be applied as a non-sugar structure insect trehalase inhibitor.

The present invention discloses a method for photocatalytic hydrogen transfer reduction cleavage of aryl ethers at room temperature. This method uses Pt / TiO2 as a photocatalyst, diaryl ethers and aryl alkyl ethers as aryl ether substrates, simple aliphatic alcohols as solvents and hydrogen donors, hydrochloric acid as an acid catalyst, and a 370 nm LED as a light source. Under an anaerobic atmosphere at room temperature, hydrogen transfer from simple aliphatic alcohols to aryl ethers is achieved, thereby the aryl ethers undergo reductive cleavage to obtain cyclohexane and cyclohexanol products. The aryl ether substrate, Pt / TiO2 catalyst, catalytic amount or equivalent amount of hydrochloric acid, and aliphatic alcohol are placed in a quartz reaction tube. After replacing the gas atmosphere with nitrogen or argon, it is sealed and stirred under light for 1 - 12 hours to obtain cyclohexane and cyclohexanol products. Compared with conventional aryl ether hydrogenation methods, this method has the characteristics of operating at room temperature, without the need for hydrogen, using primary alcohols as hydrogen sources, and using heterogeneous photocatalysts, and the experiment is simple and easy to operate.

The invention relates to the technical field of compound synthesis and pesticides, in particular to benzoyl pyrazole derivatives and a preparation method and application thereof, and the benzoyl pyrazole derivatives are benzoyl pyrazole derivatives containing diarylether groups. The derivative has effective pre-emergence and post-emergence herbicidal activity, is good in crop selectivity and can be applied to herbicides; the derivative is simple in structure and preparation process, low in production cost and wide in application prospect.

The present invention discloses a method for the copper-catalyzed synthesis of dibenzo diazo- or oxa- or thia- heterocyclic compounds. The target product is synthesized by coupling an aromatic amine or an aromatic phenol or an aromatic thiol with an aromatic halide to construct an intermediate of diarylamine or diaryl ether or diaryl sulfide and then amination cyclization. Among them, the dibenzo diazo- / thia- heterocyclic compounds are obtained by a one-pot two-step method, which has low cost, mild reaction conditions, high chemoselectivity, high reaction yield and wide substrate adaptability.

The application belongs to the field of pharmaceutical chemistry, and discloses a new use of a diaryl ether-pyrazole heterocyclic compound in preventing and treating agricultural pathogenic fungal diseases caused by Botrytis cinerea Pers., Fusarium graminearum Schw., Rhizoctonia solani, Phytophthora capsici Leonian., Sclerotinia sclerotiorum, and in preventing and treating plant diseases caused by Xanthomonas oryzae ACCC 11602, Xanthomonas axonopodis pv.Citri, Pseudomonas soli macerae and Erwinia aroideae, and diseases caused by human pathogenic bacteria Escherichia coli ATCC 25922, Staphyloccocus aureus sp.Newman and Candida albicans ATCC 24433. The structural general formula of the diaryl ether-pyrazole heterocyclic compound is as follows: the diaryl ether-pyrazole heterocyclic compound has the characteristics of simple structure, easy synthesis, low price and wide use, and through activity determination, it is found that the diaryl ether-pyrazole heterocyclic compound has clear structure-activity relationship, a wide bactericidal spectrum and further research and development value.

The invention discloses a diaryl ether derivative as well as a preparation method and application thereof. The invention provides a compound shown in a general formula (I), and a stereoisomer or pharmaceutically acceptable salt thereof. The compound provided by the invention has better selectivity to the kappa opioid receptor, has more excellent pharmacodynamic and / or pharmacokinetic properties, is good in safety, and can be used for treating and / or preventing diseases related to the kappa opioid receptor.