Abstract: An aryloyl(oxy or amino)pentafluorosulfanylbenzene compound having pharmacological action. The aryloyl(oxy or amino)pentafluorosulfanylbenzene compound is represented by general formula (A-I), a pharmaceutically acceptable salt thereof, and a prodrug thereof, wherein all of parameters represent the same meanings as defined in the specification.

Abstract: An aryloyl(oxy or amino)pentafluorosulfanylbenzene compound having pharmacological action. The aryloyl(oxy or amino)pentafluorosulfanylbenzene compound is represented by general formula (A-I), a pharmaceutically acceptable salt thereof, and a prodrug thereof, wherein all of parameters represent the same meanings as defined in the specification.

Abstract: The present invention relates to a binuclear ruthenium complex dye having a higher absorption coefficient and capable of absorbing light of longer wavelength for realizing a photoelectric conversion element and a photochemical cell which may convert solar light into electricity over a wide wavelength range and exhibit high photoelectric conversion efficiency; and a binuclear ruthenium complex dye for realizing a photoelectric conversion element and a photochemical cell which may have high durability.

Abstract: A process for producing a quinazolin-4-one compound having the formula: [wherein R1, R2, R3 and R4 each represents a group not participating in the below-mentioned reaction, and R1, R2, R3 and R4 can be combined together to form a ring] which comprises reacting an anthranilic acid derivative having the formula: [wherein R5 is a hydrogen atom or a hydrocarbyl group] with a formic acid derivative in the presence of an ammonium carboxylate.

Abstract: The present invention relates to a binuclear ruthenium complex dye having a higher absorption coefficient and capable of absorbing light of longer wavelength for realizing a photoelectric conversion element and a photochemical cell which may convert solar light into electricity over a wide wavelength range and exhibit high photoelectric conversion efficiency; and a binuclear ruthenium complex dye for realizing a photoelectric conversion element and a photochemical cell which may have high durability.

Abstract: A 4-aminoquinazoline derivative can be obtained by the steps of reacting quinazolin-4-one or its derivative with a chlorinating agent in a first organic solvent in the presence of an organic base, and subsequently reacting the reaction product with an amine compound represented by the formula R5—NH—R6 (each of R5 and R6 represents hydrogen or an optionally substituted hydrocarbyl group) in the presence of a second organic solvent.

Abstract: 6,7-Bis(2-methoxyethoxy)quinazolin-4-one of formula (5) useful in synthesis of an anti-cancer drug can be prepared by a reaction of ethyl 2-amino-4,5-bis(2-methoxyethoxy)benzoate of formula (4) with an orthoformic acid in the presence of an ammonium acetate:

Abstract: A polycyclic pentafluorosulfanylbenzene compound represented by the following general formula (1) and a process for producing the polycyclic pentafluorosulfanylbenzene compound which comprises reacting a specific pentafluorosulfanylbenzene compound with a specific boronic acid compound are provided. The polycyclic pentafluorosulfanylbenzene compound is a novel compound and can be produced by the process industrially advantageously. (R1 to R4 each independently represent hydrogen atom or fluorine atom, R5 represents a hydrocarbon group having at least two cyclic structures which may have substituents, and Z represents keto group, thioketo group, methylene group or difluoromethylene group.

Abstract: An object of the present invention is to provide an industrially suitable process for preparing an imidazolidin-2,4-dione compound which is safe, simple and easy to prepare the imidazolidin-2,4-dione compound with high yield, which is a useful compound, for example, as a material for decomposing a harmful halogenated aromatic hydrocarbon compound such as dioxin, etc., an electroless silver plating solution for electronic parts, or a diazo copying material, etc. This object can be solved by a process for preparing an imidazolidin-2,4-dione compound which comprises subjecting a 4,5-dihydroxy-2-imidazolidinone compound, (1) to dehydration reaction in the presence of an acid catalyst(s); or (2) to reaction at 100 to 300° C. Or, it can be solved by a process for preparing an imidazolidin-2,4-dione compound which comprises reacting a mixed solution of a urea compound, glyoxal, and a base at 20 to 300° C.

Abstract: Disclosed is a commercially suitable method for producing a 1-substituted-5-acylimidazole compound. A 1-substituted-5-acylimidazole compound is produced with a high position selectivity by reacting an N-substituted amidine compound or a salt thereof with a ketone compound in the presence of a base.

Abstract: A task of the present invention is to provide a method for preparing a dispersion liquid comprising liquid crystal-compatible particles and a paste thereof, which is commercially advantageous in that a dispersion liquid comprising liquid crystal-compatible particles and a uniform liquid crystal-compatible particle paste can be obtained using a method which can easily achieve mass-production.

Abstract: The present invention relates to a process for preparing tetrahydropyran-4-one represented by the formula (1): which comprises reacting at least one kind of dihydropyran-4-one and pyran-4-one represented by the formula (2): wherein represents a single bond or a double bond, and hydrogen (a) in the presence of a metal catalyst, in a mixed solvent of an aprotic solvent and an alcohol solvent, or (b) in the presence of an anhydrous metal catalyst in which a hydrated metal catalyst is subjected to dehydration treatment, in a hydrophobic organic solvent.

Abstract: The present invention is to provide a process for preparing an alkyl 3-(4-tetrahydropyranyl)-3-oxopropanoate compound represented by the formula (1): wherein R1 and R2 may be the same or different from each other, and represent a group which does not participate in the reaction, and R1 and R2 may be bonded to form a ring, and the ring may contain a hetero atom(s), and R3 represents a hydrocarbon group, which comprises reacting 4-acyltetrahydropyran represented by the formula (2): wherein R1 and R2 have the same meanings as defined above, and a carbonic acid diester represented by the formula (3): wherein R3 has the same meanings as defined above, and two R3s may be bonded to each other to form a ring, in the presence of a base, and a process for preparing 4-acyltetrahydropyran.

Abstract: A polycyclic pentafluorosulfanylbenzene compound represented by the following general formula (1) and a process for producing the polycyclic pentafluorosulfanylbenzene compound which comprises reacting a specific pentafluorosulfanylbenzene compound with a specific boronic acid compound are provided. The polycyclic pentafluorosulfanylbenzene compound is a novel compound and can be produced by the process industrially advantageously. (R1 to R4 each independently represent hydrogen atom or fluorine atom, R5 represents a hydrocarbon group having at least two cyclic structures which may have substituents, and Z represents keto group, thioketo group, methylene group or difluoromethylene group.

Abstract: A dibenzothiazepine compound is suitably prepared by subjecting a 2-amino-2?-carboxy-diphenylsulfide compound to dehydration-condensation reaction in the presence of an acidic catalyst; the 2-amino-2?-carboxy-diphenylsulfide compound is suitably prepared by reducing a 2-nitro-2?-carboxy-diphenylsulfide compound in a lower aliphatic ester solvent; and the 2-nitro-2?-carboxy-diphenylsulfide compound is suitably prepared by reacting a nitrobenzene compound with a thiosalicylic acid compound in a mixture of a lower aliphatic alcohol and water.

Abstract: An object of the present invention is to provide an industrially suitable process for preparing an imidazolidin-2,4-dione compound which is safe, simple and easy to prepare the imidazolidin-2,4-dione compound with high yield, which is a useful compound, for example, as a material for decomposing a harmful halogenated aromatic hydrocarbon compound such as dioxin, etc., an electroless silver plating solution for electronic parts, or a diazo copying material, etc. This object can be solved by a process for preparing an imidazolidin-2,4-dione compound which comprises subjecting a 4,5-dihydroxy-2-imidazolidinone compound, (1) to dehydration reaction in the presence of an acid catalyst(s); or (2) to reaction at 100 to 300° C. Or, it can be solved by a process for preparing an imidazolidin-2,4-dione compound which comprises reacting a mixed solution of a urea compound, glyoxal, and a base at 20 to 300° C.

Abstract: Disclosed is a commercially suitable method for producing a 1-substituted-5-acylimidazole compound. A 1-substituted-5-acylimidazole compound is produced with a high position selectivity by reacting an N-substituted amidine compound or a salt thereof with a ketone compound in the presence of a base.

Abstract: Provided are a process for preparing a 4-amino-2-alkylthio-5-pyrimidinecarbaldehyde, which is industrially advantageous in that a 4-amino-2-alkylthio-5-pyrimidinecarbaldehyde can be prepared in high yield in a simple way, an intermediate used in the process, and a process for preparing the intermediate, which is industrially advantageous in that the intermediate can be prepared safely in high yield with ease. The present invention is directed to: a process for preparing an alkali metal salt of 3,3-dialkoxy-2-hydroxymethylenepropanenitrile, comprising reacting at least one nitrile compound selected from the group consisting of a 3,3-dialkoxypropanenitrile and a 3-alkoxy-2-propenenitrile, with a formic acid ester at ?10 to 30° C.

Abstract: The present invention is to provide a process for preparing a 4-aminopyrimidine compound represented by the formula (3): wherein R1 and R2 each represent a hydrogen atom or group which does not participate in the reaction and which may have a substituent(s), and R1 and R2 may be bonded to each other to form a ring, and R4 represents a hydrogen atom or a hydrocarbon group, which comprises reacting ammonia, a 3-substituted or unsubstituted acrylonitrile compound represented by the formula (1): CR1(CN)?CR2Y??(1) wherein R1 and R2 have the same meanings as defined above, and Y represents an amino group or OR, where R represents a hydrogen atom or a hydrocarbon group, and an organic acid compound represented by the formula (2): (R3O)3CR4??(2) wherein R3 represents a hydrocarbon group, and R4 has the same meaning as defined above.

Abstract: 6,7-Bis(2-methoxyethoxy)quinazolin-4-one of formula (5) useful in synthesis of an anti-cancer drug can be prepared by a reaction of ethyl 2-amino-4,5-bis(2-methoxyethoxy)benzoate of formula (4) with an orthoformic acid in the presence of an ammonium acetate: