Process to produce (Z)-1,1,1,4,4,4-hexafluoro-2-butene and intermediates
AssigneeThe Chemours Company Fc, LLC
InventorSheng Peng
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Abstract
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.
Claims23
A process for producing a product mixture comprising 1,1,1,3,3-pentachloro-4,4,4-trifluorobutane (CCl3CH2CCl2CF3, 333jfa), comprises contacting a halogenated alkane with an olefin in the presence of a mononitrile and a catalyst comprising copper (II) chloride, wherein the halogenated alkane is chosen from 1,1,1-trichloro-2,2,2-trifluoroethane (CF3CCl3, 113a) and carbon tetrachloride (CCl4), provided that when the halogenated alkane is 1,1,1-trichloro-2,2,2-trifluoroethane, the olefin is vinylidene chloride (CH2═CCl2, VDC) and when the halogenated alkane is carbon tetrachloride, the olefin is 2-chloro-3,3,3-trifluoropropene (CF3CCl═CH2, 1233xf).
Dependencies are inferred from the claim text.