Abstract: The present invention provides a diaryl sulfone compound represented by Formula (1): wherein R1 to R4 and R1? to R4? are the same or different, and each represents hydrogen, C1-4 alkyl, or halogen, and R5 represents C2-6 alkenyl, C1-4 alkyl, or aromatic heterocyclic group; a method for producing the diaryl sulfone compound represented by Formula (1) by reacting a 4,4?-dihaloarylsulfone compound with thiol salt compound having an alkylene group; and a method for producing the diaryl sulfone compound represented by Formula (1) by reacting a 4,4?-dihaloarylsulfone compound with a thiol salt compound having a hydroxyl group, and subjecting the resulting compound to reaction with a halogenating agent, followed by a dehydrohalogenation reaction.

Abstract: The present invention provides a diaryl sulfone compound represented by Formula (1) below: wherein R1 to R4 and R1? to R4? are the same or different; each represents hydrogen, C1-4 alkyl, or halogen; and R5 is (thio)glycidyl, acryloyl, or the like; and a method for producing the same. According to the present invention, a novel compound useful as a monomer for producing synthetic resin having a high refractive index and excellent transparency for optical materials can be efficiently produced with a simple production process, using an inexpensive material as a starting material.

Abstract: The present invention aims to provide, with combination of a sulfolane compound and an organic alkanolamine compound, a sulfolane composition which is not likely to cause odor, can suppress pyrolysis of the sulfolane compound with a reduced amount of additives, and can reduce generation of sulfur dioxide. The present invention relates to a sulfolane composition containing a sulfolane compound represented by formula (1) and an organic alkanolamine compound, wherein R1 to R6 each independently represent a hydrogen atom or a C1-6 alkyl group.

Abstract: The present invention provides a method for producing a 1,2-benzisothiazol-3-one compound by reacting a 2-(alkylthio)benzonitrile compound with a halogenating agent in the presence of water, wherein an alkyl halide that is generated as by-product is reacted with a sulfide to form an alkylthiol, which is converted into an alkali metal salt, and then the resulting alkali metal salt is reacted with a 2-halobenzonitrile compound to be converted into a 2-(alkylthio)benzonitrile compound and reused as a starting material for the production of a 1,2-benzisothiazol-3-one compound. By means of the present invention, it is possible to efficiently use the by-product that is generated during the production of a 1,2-benzisothiazol-3-one compound and economically produce a 1,2-benzisothiazol-3-one compound without placing a burden on the environment.

Abstract: An object of the present invention is to provide a method for manufacturing a sulfolene compound, the method being capable of inhibiting generation of polymers. Another object of the present invention is to provide a method for manufacturing a sulfolane compound, the method being capable of controlling inhibition of hydrogenation catalyst activity and smoothly hydrogenating a sulfolene compound. The present invention is a method for manufacturing a sulfolene compound represented by a formula (2), which comprises the step of reacting a conjugated diene compound represented by a formula (1) with sulfur dioxide in the presence of a metallocene compound: in the formula (1), R1 to R6 each independently represents a hydrogen atom or a C1 to C6 alkyl group, in the formula (2), R1 to R6 represent the same groups represented by R1 to R6 in the formula (1).

Abstract: The present invention provides a diaryl sulfone compound represented by Formula (1): wherein R1 to R4 and R1? to R4? are the same or different, and each represents hydrogen, C1-4 alkyl, or halogen, and R5 represents C2-6 alkenyl, C1-4 alkyl, or aromatic heterocyclic group; a method for producing the diaryl sulfone compound represented by Formula (1) by reacting a 4,4?-dihaloarylsulfone compound with thiol salt compound having an alkylene group; and a method for producing the diaryl sulfone compound represented by Formula (1) by reacting a 4,4?-dihaloarylsulfone compound with a thiol salt compound having a hydroxyl group, and subjecting the resulting compound to reaction with a halogenating agent, followed by a dehydrohalogenation reaction.

Abstract: The present invention provides a diaryl sulfone compound represented by Formula (1) below: wherein R1 to R4 and R1? to R4? are the same or different; each represents hydrogen, C1-4 alkyl, or halogen; and R5 is (thio)glycidyl, acryloyl, or the like; and a method for producing the same. According to the present invention, a novel compound useful as a monomer for producing synthetic resin having a high refractive index and excellent transparency for optical materials can be efficiently produced with a simple production process, using an inexpensive material as a starting material.

Abstract: An object of the present invention is to provide a method for manufacturing a sulfolene compound, the method being capable of inhibiting generation of polymers. Another object of the present invention is to provide a method for manufacturing a sulfolane compound, the method being capable of controlling inhibition of hydrogenation catalyst activity and smoothly hydrogenating a sulfolene compound. The present invention is a method for manufacturing a sulfolene compound represented by a formula (2), which comprises the step of reacting a conjugated diene compound represented by a formula (1) with sulfur dioxide in the presence of a metallocene compound: in the formula (1), R1 to R6 each independently represents a hydrogen atom or a C1 to C6 alkyl group, in the formula (2), R1 to R6 represent the same groups represented by R1 to R6 in the formula (1).