112 results about "Bephenium Compounds" patented technology

The present invention provides a medicament comprising a benzene compound useful as an insulin sensitizer, a salt thereof or a hydrate of them and a derivative of them as the active ingredient. Specifically, it provides a benzene compound represented by the following formula, a salt thereof or a hydrate of them.In the formula, X represents 1) a C6-10 aryl group which may have one or more substituents or 2) a 5- to 10-membered heteroaryl group which may have one or more substituents; Y represents a group represented by the formula:(in the above formulae, Ry1, Ry2 and Ry3 are the same as or different from one another and each represents a hydrogen atom, a halogen atom, a C1-6 alkyl group, a C1-6 alkoxy group, or a C3-7 cycloalkyl group) etc.; Z represents a group represented by the formula:(in the formula, m represents an integer of 0 to 2; Rz1, Rz2, Rz3 and Rz4 are the same as or different from one another and each represents a hydrogen atom, a halogen atom, a C1-6 alkyl group, a C1-6 alkoxy group, a C3-7 cycloalkyl group, a halogenated C1-6 alkyl group, a halogenated C1-6 alkoxy group etc.); and R1, R2, R3 and R4 are the same as or different from one another and each represents a hydrogen atom, a halogen atom, a C1-6 alkyl group, a C1-6 alkoxy group, a C3-7 cycloalkyl group etc.

The compounds represented by the formula (I) are produced by reacting benzene compound of the formula (IV) or (V) with alkenylidene diacetate of the formula (VI) in the presence of a catalyst comprising one or more members selected from (a) halogenated boron compounds, (b) triflate compounds of Group 11 elements, (c) halogenated compounds of Group 12 elements, and (d) triflate and halogenated compounds of tin and atomic numbers 58 and 66 to 71 elements. R1, R2=H or C1-C10 alkyl group A=Substituted phenyl group corresponding to a compound of formula (IV) or (V), R3, R4=H or C1-C4 alkyl group, m=0 or 1-4, n=1 to 5, k=1 or 2.

In a process for producing dialkylbiphenyl compounds, a feed comprising substituted cyclohexylbenzene isomers having the formula (I):wherein each of R1 and R2 is an alkyl group and wherein the feed comprises m % by weight of isomers in which R1 is in the 2-position, based on the total weight of substituted cyclohexylbenzene isomers in the feed; is transalkylated with a compound of formula (II):to produce a transalkylation product comprising substituted cyclohexylbenzene isomers having the formula (I) and including n % by weight of isomers in which R1 is in the 2-position, based on the total weight of substituted cyclohexylbenzene isomers in the transalkylation product, wherein n<m. At least part of the transalkylation product is then dehydrogenated under conditions effective to convert at least part of the substituted cyclohexylbenzene isomers in the transalkylation product to dialkylbiphenyl compounds.

Brominated hydroxyaromatic compounds such as p-bromophenol are prepared by contacting a hydroxyaromatic compound with oxygen and a bromine source such as hydrogen bromide or an alkali metal or alkaline earth metal bromide in an acidic medium, in the presence of elemental copper or a copper compound as catalyst. The brominated product of this reaction may be converted alternately to a dihydroxyaromatic compound such as hydroquinone by hydrolyses, or a dihydroxybiphenyl compound such as 4,4'-dihydroxybiphenyl by reductive coupling.

The present invention refers to a crystalline 2-fluoro-3-nitrotoluene compound of formula (I), and a process for the preparation thereof. Furthermore, the present invention relates to a process for the synthesis of a compound of formula (II) or salts thereof by means of the crystalline 2-fluoro-3-nitrotoluene.

Disclosed herein are carbon black surface-modified with benzene compound of Formula 1 described in the specification and a carbon black dispersion composition for a black matrix using the carbon black. The carbon black dispersion composition uses carbon black surface-modified with the benzene compound of Formula 1, or about 0.1 to about 20% by weight of a cardo compound selected from cardo monomers, oligomers, polymers and mixtures thereof. The carbon black dispersion composition can provide improved adhesive properties, uniformity and resolution of black matrix patterns, and no undercut is formed on the black matrix patterns.