Ube Industries, Inc.

Tetsuro Shimano

Hidetaka Shima

Shigeyoshi Nishino

Hiroyuki Oda

Toshikazu Hamamoto

Shizuo Tokito

Toshikazu Machida

Mitsuo Yamanaka

Daisuke Kumaki

Takato Nakamura

Yasuhiro Tanaka

Yasuhiro Yoneda

Kazuaki Kakita

Youji Omata

Kimihiko Yoshimura

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.

Aryloyl(oxy or amino)pentafluorosulfanylbenzene compound, pharmaceutically acceptable salt thereof, and prodrugs thereof

A benzobis(thiadiazole) derivative represented by the formula (1): 

Benzobis(thiadiazole) derivative and organic electronics device comprising same

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&#xb0; 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&#xb0; C. Also, an object of the present invention is to provide a method for acquiring a 4,5-dihydroxy-2-imidazolidinone from an aqueous solution containing a 4,5-dihydroxy-2-imidazolidinone by a simple and easy method. This object can be solved by a process for acquiring a solid state 4,5-dihydroxy-2-imidazolidinone compound which comprises mixing an organic solvent with an aqueous solution containing a 4,5-dihydroxy-2-imidazolidinone compound, and subjecting the mixture to azeotropic distillation.

Process for preparing imidazolidin-2,4-dione compound and method for acquiring solid state 4,5-dihydroxy-2-imidazolidinone compound

Process for producing a cycloalkanol and cycloalkanone

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Ube, Japan

Tetsuro Shimano