48 results about "Terphenyl Compounds" patented technology

An m-terphenyl derivative has a structure of formula (I) or (II):

wherein A and B are five-membered heterocyclic compounds containing nitrogen, each of substituents R, R₁ and R₂ is a member independently selected from the group consisting of H, halo, cyano, trifluoromethyl, amino, C₁-C₁₀ alkyl, C₂-C₁₀ alkenyl, C₂-C₁₀ alkynyl, C₃-C₂₀ cycloalkyl, C₃-C₂₀ cycloalkenyl, C₁-C₂₀ heterocycloalkyl, C₁-C₂₀ heterocycloalkenyl, aryl and heteroaryl. The compound of the present invention may have advantages in good electron affinity, low HOMO and thereby achieving hole blocking and may be used for electron transport material and/or electron injection material.

The present invention relates to a liquid crystal (LC) medium comprising a terphenyl compound and at least two polymerisable compounds, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display, comprising it.

The invention discloses a liquid crystal composition containing a fluoroterphenyl compound and a pentafluoropropenyl ester compound and an application thereof. The liquid crystal composition comprises the following components in parts by weight: 1) 1-30 parts of one or more compounds represented by a general formula I; 2) 1-60 parts of one or more compounds represented by a general formula II; 3) 10-70 parts of one or more compounds represented by a general formula III; and 4) 0-50 parts of compounds represented by general formulas IV-VI. The liquid crystal composition disclosed by the invention has the characteristics of low viscosity, high electrical resistivity, proper optical anisotropy, large elastic constant and the like as well as excellent light stability and heat stability, can reduce the response time of a liquid crystal display so as to solve the problem of slow response of the liquid crystal display, and is applicable to fast-response TFT liquid crystal display devices of TN, IPS and FFS types.

The Invention discloses a preparation method for a triptyl polymer separation membrane, wherein, it comprises the following steps: take triptycene compound containing active group, dichloride compound and diamino compound containing ether bond as monomers, and conduct polymerization in aprotic organic solvent in the presence of acid-binding agent; pour the obtained polymer solution into deionized water for precipitation after the reaction, filter out precipitates and wash with methanol and dry to get triptyl polymer; dissolve the triptyl polymer in aprotic organic solvent to produce a membrane-casting solution, apply the solution on support and dry to get a triptyl polymer separation membrane. The Invention solves the problem that the reticular polymer material is insoluble, and breaks the restriction for application of such material in separation membrane due to its insoluble and aging features.

The present invention provides a selective suppressor of the IgE production comprising a compound which suppresses the IgE production in a process from a differentiation of a mature B cell into an antibody-producing cell to the production of an antibody and which does not suppress or weakly suppresses the production of IgG, IgM and/or IgA which are produced at the same time, a compound of the formula (I): wherein R<1>-R<13 >are hydrogen, halogen, lower alkyl, lower alkoxy or the like, X is -O-, -CH2-, -NR<14>- or -S(O)p- and Y is lower alkyl, lower alkenyl or the like, a process for producing the same and a pharmaceutical composition comprising the same.

The present invention relates to a polycarboxylic acid organic ligand based on NHPI functionalization and a synthesis method, and belongs to the technical field of organic chemical synthesis. A multi-methyl-containing terphenyl compound is obtained by conducting coupling reaction on 1,4-dibromo-2,3-dimethylbenzene and a phenylboronic acid having methyl at 4-position or 3- and 5-position of a phenyl ring under catalyst of palladium, then methyl is oxidized by potassium permanganate under conditions of 100 DEG C by taking pyridine and water as a solvent so as to generate a multi-carboxylic acidterphenyl structure, then the multi-carboxylic acid terphenyl structure and hydroxylamine hydrochloride are directly heated and refluxed in a pyridine solution for 3 hours, cooling is carried out, rotary evaporation is carried out for solvent removal, water and hydrochloric acid are added for adjusting the pH to be 1 for precipitating a large amount of precipitate, centrifugal treatment, water washing and drying are carried out, so that a relatively pure target product with high yield is obtained. compared with a conventional technology, the method is simple in technology, and the product purity is high. An MOFs material prepared by the organic ligand has wide application prospects because of excellent catalysis efficiency up to 90%-99%, recyclability and other comprehensive performance.

The present invention provides a compound of the formula (I): wherein R<1a>, R<1b>, R<1c >and R<1d >are each independently hydrogen, lower alkyl, lower alkenyl, lower alkynyl, lower alkylsulfonyl or cycloalkyl and the like, R<4 >to R<15 >are hydrogen, halogen, hydroxy, lower alkyl, lower alkoxy, carboxy, lower alkoxycarbonyl, amino, nitro, lower alkylsulfonyl, lower alkylsulfonyloxy and the like, which has superior immunosuppressive and/or anti-allergic activity and is useful for a pharmaceutical composition.

The present invention relates to aromatic amine-terphenyl compounds and use thereof in organic semiconducting components.

The invention discloses a method for synthesizing a biphenyl compound by using phenol as a raw material in the technical field of organic chemical synthesis, which comprises the following steps: carrying out a mixed reaction process on phenol or substituted phenol, alkali and 50-90% ethanol aqueous solution, slowly introducing sulfonyl fluoride gas, and carrying out magnetic stirring reaction at normal temperature for 4-12 hours, adding arylboronic acid, alkali and a palladium catalyst into a round-bottom flask, continuing to react for 6-12 hours at normal temperature, after the reaction is finished, adding a saturated edible salt solution into the round-bottom flask, carrying out a water quenching reaction process to obtain a reaction mixture, extracting a reaction product from the reaction mixture by using ethyl acetate, combining organic phases, concentrating filtrate, and separating the concentrated filtrate by using column chromatography to obtain analytically pure biphenyl or terphenyl compounds. By using the method, on one hand, the production cost of the biphenyl compound is reduced, and on the other hand, the method also has a wide application prospect in the aspects of synthesis of natural products, medicines, pesticides, herbicides, polymer conduction materials, liquid crystal materials and the like.

The invention belongs to the technical field of microorganisms and in particular relates to a terphenyl compound as well as a preparation method and application thereof. A terphenyl compound 2,5-diphenyl-3-methoxy-6-hydroxy-6-acetonyl cyclohexdienone is extracted from an extract of sceliphron madraspatanum symbiotic actinomycetes, the sceliphron madraspatanum symbiotic actinomycetes belong to edophytic steptomyces, and the 2,5-diphenyl-3-methoxy-6-hydroxy-6-acetonyl cyclohexdienone has a certain inhibition function on tumor cells, so that the 2,5-diphenyl-3-methoxy-6-hydroxy-6-acetonyl cyclohexdienone can be used as application of anti-tumor medicine lead compound. The 2,5-diphenyl-3-methoxy-6-hydroxy-6-acetonyl cyclohexdienone hs an activity inhibition function upon osteosarcoma cells U2OS, osteosarcoma Saos2, mucoepidermoid carcinoma cells and vinblastine-resistant cells.