Abstract: The present invention provides: an aluminum alloy substrate for magnetic discs with excellent plating surface smoothness; a manufacturing method therefor; and a magnetic disc using said aluminum alloy substrate for magnetic discs. The present invention is an aluminum alloy substrate for magnetic discs, a manufacturing method therefor, and a magnetic disc using said aluminum alloy substrate for magnetic discs, the aluminum alloy substrate being characterized in being obtained from an aluminum alloy containing Mg: 2.0-8.0 mass % (“%” below), Be: 0.00001-0.00200%, Cu: 0.003-0.150%, Zn: 0.05-0.60%, Cr: 0.010-0.300%, Si: 0.060% or less, Fe: 0.060% or less, the balance being obtained from Al and unavoidable impurities.

Abstract: The present invention provides: an aluminum alloy substrate for magnetic discs with excellent plating surface smoothness; a manufacturing method therefor; and a magnetic disc using said aluminum alloy substrate for magnetic discs. The present invention is an aluminum alloy substrate for magnetic discs, a manufacturing method therefor, and a magnetic disc using said aluminum alloy substrate for magnetic discs, the aluminum alloy substrate being characterized in being obtained from an aluminum alloy containing Mg: 2.0-8.0 mass % (“%” below), Be: 0.00001-0.00200%, Cu: 0.003-0.150%, Zn: 0.05-0.60%, Cr: 0.010-0.300%, Si: 0.060% or less, Fe: 0.060% or less, the balance being obtained from Al and unavoidable impurities.

Abstract: A metal member for magnetic storage medium includes an aluminum alloy substrate, and a nonmagnetic layer formed on at least one surface of the aluminum alloy substrate, and the nonmagnetic layer comprises a Ni—Cu—P based alloy containing 5 mass % to 50 mass % Cu and 100 ppm to 1000 ppm Pb.

Abstract: The present invention provides a novel thiophene compound as a synthetic intermediate that is useful for efficient production of kahweofuran or an analogue thereof. The present invention also provides a process for producing kahweofuran or an analogue thereof using the novel thiophene compound as an intermediate material. Of novel thiophene compounds represented by Formula (1): wherein R1 is a hydrogen atom or a C1-C4 lower alkyl group; R2 is a hydrogen atom or an alcohol-protecting group; R3 is a hydrogen atom, —COR4 or —C(OH)R5 (wherein R4 and R5 each represent a C1-C4 lower alkyl group); provided that when R2 and R3 are hydrogen atoms, R1 is not any of a hydrogen atom, methyl group, or n-propyl group; a thiophene compound represented by Formula (2) is reduced and cyclized in the presence of a transition metal catalyst to produce kahweofuran or kahweofuran analogue (3a) shown below: wherein R1 is a hydrogen atom or a C1-C4 lower alkyl group, and R4 is a C1-C4 lower alkyl group.

Abstract: The present invention provides a novel thiophene compound as a synthetic intermediate that is useful for efficient production of kahweofuran or an analogue thereof. The present invention also provides a process for producing kahweofuran or an analogue thereof using the novel thiophene compound as an intermediate material. Of novel thiophene compounds represented by Formula (1): wherein R1 is a hydrogen atom or a C1-C4 lower alkyl group; R2 is a hydrogen atom or an alcohol-protecting group; R3 is a hydrogen atom, —COR4 or —C(OH)R5 (wherein R4 and R5 each represent a C1-C4 lower alkyl group); provided that when R2 and R3 are hydrogen atoms, R1 is not any of a hydrogen atom, methyl group, or n-propyl group; a thiophene compound represented by Formula (2) is reduced and cyclized in the presence of a transition metal catalyst to produce kahweofuran or kahweofuran analogue (3a) shown below: wherein R1 is a hydrogen atom or a C1-C4 lower alkyl group, and R4 is a C1-C4 lower alkyl group.

Abstract: Perfluoroisopropylbenzene derivatives of the general formula (I) or salts thereof, useful as intermediates or raw materials in the synthesis of various industrial materials including agricultural chemicals, drugs and surfactants: wherein X1 is H, halogen, formyl, optionally halogenated (C1–C6) alkyl, (C1–C6) alkylthio, or the like; X2 is H, halogen, formyl, hydroxyl, (C1–C6) alkyl, —C(?O)—R1 (wherein R1 is H, halogen, hydroxyl, (C1–C6) alkyl, or NR2R3, with R2 and R3 being each H, C1-6 alkyl, or the like), or the like; X3 is H, halogen, hydroxyl, cyano, isocyanate, hydrazino, diazo, —C(?O)—R1, —SO2—R4 (wherein R4 is halogen, hydroxyl, (C1–C6) alkyl, or NR5R6, with R5 and R6 being each H or (C1–C6) alkyl), or the like; and X4 is H, halogen, (C1–C6) alkyl, or (C1–C6) alkoxy, with publicly known compounds being excepted.

Abstract: Perfluoroisopropylbenzene derivatives of the general formula (I) or salts thereof, useful as intermediates or raw materials in the synthesis of various industrial materials including agricultural chemicals, drugs and surfactants: wherein X1 is H, halogen, formyl, optionally halogenated (C1-C6) alkyl, (C1-C6) alkylthio, or the like; X2 is H, halogen, formyl, hydroxyl, (C1-C6) alkyl, —C(?O)—R1 (wherein R1 is H, halogen, hydroxyl, (C1-C6) alkyl, or NR2R3, with R2 and R3 being each H, C1-6 alkyl, or the like), or the like; X3 is H, halogen, hydroxyl, cyano, isocyanate, hydrazino, diazo, —C(?O)—R1, —SO2—R4 (wherein R4 is halogen, hydroxyl, (C1-C6) alkyl, or NR5R6, with R5 and R6 being each H or (C1-C6) alkyl), or the like; and X4 is H, halogen, (C1-C6) alkyl, or (C1-C6) alkoxy, with publicly known compounds being excepted.

Abstract: The present invention provides an aniline derivative represented by the formula (I) wherein R1 and R2 are each H, (C1-12)alkyl, (C3-8)cycloalkyl, hydroxy(C1-12)alkyl, hydroxycarbonyl (C1-12)alkyl, (C1-6)-alkoxycarbonyl(C1-6)alkyl, —COR8, wherein R8 is H, halo-(C1-12)alkyl, (C3-8)cycloalkyl or (substituted) phenyl, COOR9, wherein R9 is a halo(C1-6)alkyl group, (substituted) phenyl or (substituted) benzyl; R3, R4, R5, R6 and R7 are each H, halogen, OH, nitro, halo(C1-12)alkylthio, (substituted) amino-(C1-2)alkyl, (substituted) phenyl, (substituted) benzyl, amino, —N(R10)R11 wherein R10 and R11 are each H, alkyl, cycloalkyl, (substituted) phenyl, (substituted) benzyl, —COR8 or COOR9, or (C2-27)perfluoroalkyl, etc., and a process for producing the aniline derivative. According to the process of the present invention, perfluoroalkylaniline derivatives can be obtained by using various anilines as the substrate with a high position selectivity and high yield.

Abstract: The present invention provides an aniline derivative represented by the formula (I) 1

Abstract: Perfluoroisopropylbenzene derivatives of the general formula (I) or salts thereof, useful as intermediates or raw materials in the synthesis of various industrial materials including agricultural chemicals, drugs and surfactants, wherein X1 is H, halogeno, formyl, optionally halogenated C1-6 alkyl, —C(═O)—R1 (wherein R1 is H, halogeno, hydroxyl, C1-6 alkyl, or NR2R3, with R2 and R3 being each H, C1-6 alkyl, or the like), or the like; X3 is H, halogeno, hydroxyl, cyano, isocyanato, hydrazino, diazo, —C(═O)—R1, —SO2—R4 (wherein R4 is halogeno, hydroxyl, C1-6 alkyl, or NR5R6, with R5 and R6 being each H or C1-6 alkyl), or the like; and X4 is H, halogeno, C1-6 alkyl, or C1-6 alkoxy, with publicly known compounds being excepted.

Abstract: The present invention provides an aniline derivative represented by the formula (I) wherein R1 and R2 are each H, (C1-12)alkyl, (C3-8)cycloalkyl, hydroxy(C1-12)alkyl, hydroxycarbonyl (C1-12)alkyl, (C1-6)-alkoxycarbonyl(C1-6)alkyl, —COR8, wherein R8 is H, halo-(C1-12)alkyl, (C3-8)cycloalkyl or (substituted) phenyl, COOR9, wherein R9 is a halo(C1-6)alkyl group, (substituted) phenyl or (substituted) benzyl; R3, R4, R5, R6and R7 are each H, halogen, OH, nitro, halo(C1-12)alkylthio, (substituted)amino-(C1-2)alkyl, (substituted) phenyl, (substituted) benzyl, amino, —N(R10)R11 wherein R10 and R11 are each H, alkyl, cycloalkyl, (substituted) phenyl, (substituted) benzyl, —COR8 or COOR9, or (C2-27)perfluoroalkyl, etc., and a process for producing the aniline derivative. According to the process of the present invention, perfluoroalkylaniline derivatives can be obtained by using various anilines as the substrate with a high position selectivity and high yield.

Abstract: The present invention provides an aniline derivative represented by the formula (I) 1

Abstract: A refrigerant transporting hose has a five-layered wall formed of an inner rubber layer, a middle rubber layer, an outer rubber layer, a first reinforcing layer formed between the inner and middle rubber layers and a second reinforcing layer formed between the middle and outer rubber layers. Each rubber layer has a thickness of at least 0.3 mm. Each reinforcing layer is a single layer of spirally wound reinforcing yarn, and the two reinforcing layers have substantially opposite spiral yarn directions. The hose having no resin layer in its wall is of improved flexibility, as well as retaining satisfactory pressure resistance, fluid impermeability and kink resistance.

Abstract: A pyridazinone derivative represented by formula (I): a pharmaceutically acceptable salt thereof, or a derivative thereof, or a pharmaceutical composition comprising as an active ingredient the derivative or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier or diluent.