A method of producing trifluoroiodomethane (CF.sub.3I) includes providing a feedstock comprising trifluoroacetyl iodide (TFAI), passing the feedstock through at least one column charged with carbonaceous materials to remove hydrogen iodide (HI), hydrogen triiodide (HI.sub.3) and iodine (I.sub.2) from the feedstock, and providing the feedstock to a reactor to produce a trifluoroiodomethane product stream. Another method of producing trifluoroiodomethane (CF.sub.3I) includes providing a feedstock comprising trifluoroacetyl iodide (TFAI) to a reactor to produce a trifluoroiodomethane product stream, and passing the trifluoroiodomethane product stream from the reactor through at least one column charged with carbonaceous materials to remove hydrogen iodide (HI), hydrogen triiodide (HI3) and iodine (I2) from the trifluoroiodomethane product stream.

A method of producing trifluoroiodomethane (CF.sub.3I) includes providing a feedstock comprising trifluoroacetyl iodide (TFAI), passing the feedstock through at least one column charged with carbonaceous materials to remove hydrogen iodide (HI), hydrogen triiodide (HI.sub.3) and iodine (I.sub.2) from the feedstock, and providing the feedstock to a reactor to produce a trifluoroiodomethane product stream. Another method of producing trifluoroiodomethane (CF.sub.3I) includes providing a feedstock comprising trifluoroacetyl iodide (TFAI) to a reactor to produce a trifluoroiodomethane product stream, and passing the trifluoroiodomethane product stream from the reactor through at least one column charged with carbonaceous materials to remove hydrogen iodide (HI), hydrogen triiodide (HI3) and iodine (I2) from the trifluoroiodomethane product stream.

A method of producing trifluoroiodomethane (CF.sub.3I) includes providing a feedstock comprising trifluoroacetyl iodide (TFAI), passing the feedstock through at least one column charged with carbonaceous materials to remove hydrogen iodide (HI), hydrogen triiodide (HI.sub.3) and iodine (I.sub.2) from the feedstock, and providing the feedstock to a reactor to produce a trifluoroiodomethane product stream. Another method of producing trifluoroiodomethane (CF.sub.3I) includes providing a feedstock comprising trifluoroacetyl iodide (TFAI) to a reactor to produce a trifluoroiodomethane product stream, and passing the trifluoroiodomethane product stream from the reactor through at least one column charged with carbonaceous materials to remove hydrogen iodide (HI), hydrogen triiodide (HI3) and iodine (I2) from the trifluoroiodomethane product stream.

A process for preparing 2,3,3,3-tetrafluoropropene (CF.sub.3CFCH.sub.2). 3,3,3-trifluoro-2-chloropropene (CF.sub.3CClCH.sub.2) is fluorinated with HF in the vapour phase in the presence of a chromia-containing catalyst to produce an intermediate composition 1,1,1,2,2-pentafluoropropane (CF.sub.3CF.sub.2CH.sub.3), which is dehydrofluorinated to produce CF.sub.3CFCH.sub.2.

A process for preparing 2,3,3,3-tetrafluoropropene (CF.sub.3CFCH.sub.2). 3,3,3-trifluoro-2-chloropropene (CF.sub.3CClCH.sub.2) is fluorinated with HF in the vapour phase in the presence of a chromia-containing catalyst to produce an intermediate composition 1,1,1,2,2-pentafluoropropane (CF.sub.3CF.sub.2CH.sub.3), which is dehydrofluorinated to produce CF.sub.3CFCH.sub.2.

A process for preparing 2,3,3,3-tetrafluoropropene (CF.sub.3CFCH.sub.2). 3,3,3-trifluoro-2-chloropropene (CF.sub.3CClCH.sub.2) is fluorinated with HF in the vapour phase in the presence of a chromia-containing catalyst to produce an intermediate composition 1,1,1,2,2-pentafluoropropane (CF.sub.3CF.sub.2CH.sub.3), which is dehydrofluorinated to produce CF.sub.3CFCH.sub.2.

A process for preparing 2,3,3,3-tetrafluoropropene (CF.sub.3CFCH.sub.2). 3,3,3-trifluoro-2-chloropropene (CF.sub.3CClCH.sub.2) is fluorinated with HF in the vapour phase in the presence of a chromia-containing catalyst to produce an intermediate composition 1,1,1,2,2-pentafluoropropane (CF.sub.3CF.sub.2CH.sub.3), which is dehydrofluorinated to produce CF.sub.3CFCH.sub.2.

The present invention relates to stereoselective process for the preparation of a compound having formula (2) and (1) wherein X is defined in the specification.

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The present invention relates to stereoselective process for the preparation of a compound having formula (2) and (1) wherein X is defined in the specification.

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The invention relates to a process for preparing a C3-6 (hydro)fluoroalkene comprising dehydrohalogenating a C3-6 hydro(halo)fluoroalkane in the presence of a zinc/chromia catalyst, wherein the C3-6 (hydro)fluoroalkene produced is isomerized in the presence of the zinc/chromia catalyst.