The production method according to the present disclosure comprises obtaining a product containing the fluoroethane from a fluoroethylene by a reaction in the presence of catalysts. Each catalyst is formed by supporting a noble metal on a carrier. A reactor for performing the reaction is filled with a catalyst having a noble metal concentration of C1 mass % based on the entire catalyst and a catalyst having a noble metal concentration of C2 mass % based on the entire catalyst to form an upstream portion and a downstream portion, respectively; and C1<C2. The reaction is performed by bringing the fluoroethylene represented by formula (3) and hydrogen gas into contact with the upstream portion and the downstream portion in this order.

The production method according to the present disclosure comprises obtaining a product containing the fluoroethane from a fluoroethylene by a reaction in the presence of catalysts. Each catalyst is formed by supporting a noble metal on a carrier. A reactor for performing the reaction is filled with a catalyst having a noble metal concentration of C1 mass % based on the entire catalyst and a catalyst having a noble metal concentration of C2 mass % based on the entire catalyst to form an upstream portion and a downstream portion, respectively; and C1<C2. The reaction is performed by bringing the fluoroethylene represented by formula (3) and hydrogen gas into contact with the upstream portion and the downstream portion in this order.

A method for preparing isotopologues and/or stereoisotopomers of cyclic and heterocyclic alkenes and dienes is described. The method provides regio- and/or stereospecific addition of hydrogen, deuterium, tritium and a variety of other substituents to arenes, heteroarenes, and alicyclic compounds that have multiple carbon-carbon double bonds, thereby providing discrete isotopologues and stereoisotopomers of cyclic and heterocyclic alkenes and dienes with high isotopic purity and in high enantiomeric excess. Also described are isotopologues and stereoisotopomers of cyclic and heterocyclic alkenes and dienes, such as isotopologues and stereoisotopomers of cyclohexene and tetrahydropyridine, as well as products thereof, such as isotopologues and stereoisotopomers of piperidines and piperidine-containing compounds, such as methylphenidate. In addition, a method of determining the absolute configuration of stereoisotopomers of cyclohexenes is described.

A method for preparing isotopologues and/or stereoisotopomers of cyclic and heterocyclic alkenes and dienes is described. The method provides regio- and/or stereospecific addition of hydrogen, deuterium, tritium and a variety of other substituents to arenes, heteroarenes, and alicyclic compounds that have multiple carbon-carbon double bonds, thereby providing discrete isotopologues and stereoisotopomers of cyclic and heterocyclic alkenes and dienes with high isotopic purity and in high enantiomeric excess. Also described are isotopologues and stereoisotopomers of cyclic and heterocyclic alkenes and dienes, such as isotopologues and stereoisotopomers of cyclohexene and tetrahydropyridine, as well as products thereof, such as isotopologues and stereoisotopomers of piperidines and piperidine-containing compounds, such as methylphenidate. In addition, a method of determining the absolute configuration of stereoisotopomers of cyclohexenes is described.

A method of producing (Z)-1,1,1,4,4,4-hexafluoro-2-butene (Z-1336mzz) is described. The method utilizes readily available halogenated starting materials, including 1,1,1-trichloro-2,2,2-trifluoroethane (CFC-113a) and carbon tetrachloride.

A method of producing (Z)-1,1,1,4,4,4-hexafluoro-2-butene (Z-1336mzz) is described. The method utilizes readily available halogenated starting materials, including 1,1,1-trichloro-2,2,2-trifluoroethane (CFC-113a) and carbon tetrachloride.

A method of producing (Z)-1,1,1,4,4,4-hexafluoro-2-butene (Z-1336mzz) is described. The method utilizes readily available halogenated starting materials, including 1,1,1-trichloro-2,2,2-trifluoroethane (CFC-113a) and carbon tetrachloride.

The present invention relates to a process for purifying 1,1,1,2,3-pentafluoropropane, comprising the steps of: i) providing a composition A1 comprising 1,1,1,2,3-pentafluoropropane and 1,1,1,3-tetrafluoropropane; ii) purifying, preferably distilling, said composition A1 under conditions that are sufficient to form at least two streams including a first stream comprising 1,1,1,2,3-pentafluoropropane and a second stream comprising 1,1,1,3-tetrafluoropropane. The present invention also relates to a process for producing 2,3,3,3-tetrafluoropropene and a composition comprising 2,3,3,3-tetrafluoropropene.

The present invention relates to a process for purifying 1,1,1,2,3-pentafluoropropane, comprising the steps of: i) providing a composition A1 comprising 1,1,1,2,3-pentafluoropropane and 1,1,1,3-tetrafluoropropane; ii) purifying, preferably distilling, said composition A1 under conditions that are sufficient to form at least two streams including a first stream comprising 1,1,1,2,3-pentafluoropropane and a second stream comprising 1,1,1,3-tetrafluoropropane. The present invention also relates to a process for producing 2,3,3,3-tetrafluoropropene and a composition comprising 2,3,3,3-tetrafluoropropene.

The present invention relates to a process for purifying 1,1,1,2,3-pentafluoropropane, comprising the steps of: i) providing a composition A1 comprising 1,1,1,2,3-pentafluoropropane and 1,1,1,3-tetrafluoropropane; ii) purifying, preferably distilling, said composition A1 under conditions that are sufficient to form at least two streams including a first stream comprising 1,1,1,2,3-pentafluoropropane and a second stream comprising 1,1,1,3-tetrafluoropropane. The present invention also relates to a process for producing 2,3,3,3-tetrafluoropropene and a composition comprising 2,3,3,3-tetrafluoropropene.