2253-00-1Relevant academic research and scientific papers
PROCESS FOR MAKING 1,1,1,4,4,4-HEXAFLUORO-2-BUTENE
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Page/Page column 8-9, (2009/10/22)
A process is disclosed for making 1,1,1,4,4,4-hexafluoro-2-butene. The process involves reacting 2,2-dichloro-1,1,1-trifluoroethane with copper in the presence of an amide solvent and 2,2'-bipyridine. A process is also disclosed for making 1,1,1,4,4,4-hexafluoro-2-butene. The process involves reacting 2,2-dichloro-1,1,1-trifluoroethane with copper in the presence of an amide solvent and a Cu(I) salt. A process is further disclosed for making 1,1,1,4,4,4-hexafluoro-2-butene. The process involves reacting 2,2-dichloro-1,1,1-trifluoroethane with copper in the presence of an amide solvent, 2,2'-bipyridine and a Cu(I) salt.
FLUOROBUTENE DERIVATIVES AND PROCESS FOR PRODUCING SAME
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Page 28, (2008/06/13)
The present invention provides novel compounds, 2, 4,4,4-tetrafluoro-1-butene and (E)- and (Z)-1,1,1,3-tetrafluoro-2 butenes. Furthermore, the present invention provides the following novel first and second processes for producing 2,4,4,4-tetrafluoro-1-butene, (E)- and (Z)-1,1,1,3-tetrafluoro-2-butenes, and 1,1,3-trifluorobutadiene. The first process is a process for producing 2,4,4,4-tetrafluoro-1-butene by heating 1,1,1,3,3-pentaflurobutane at from about 200°C to about 700°C. The second process is a process for producing (E)- and (Z)-1,1,1,3-tetrafluoro-2-butenes by bringing 1,1,1,3,3-pentafluorobutane with a base. By the first and second processes, it is possible to obtain respective target fluorobutenes with high selectivity. In third to fifth processes, 2,4,4,4-tetrafluoro-1-butene, (E)- and (Z)-1,1,1,3-tetrafluoro-2-butene, and 1,1,3,-trifluorobutadiene can be produced by heating 1,1,1,3,3-pentafluorobutane in the presence of a catalyst. This catalyst can be regenerated by the contact with a halogen-containing gas in sixth process.
