87894-39-1Relevant articles and documents
Fluoro-olefin Chemistry. Part 17. Thermal Reaction of Hexafluoropropene with 2-trifluoromethylbutane and 1,1,1-Trifluoropentane
Davies, Terry,Haszeldine, Robert N.,Tipping, Anthony E.
, p. 1353 - 1356 (2007/10/02)
Reaction of hexafluoropropene with 2-trifluoromethylbutane (1) and 1,1,1-trifluoropentane (2) in the range 260-295 deg C gives as major products the 1:1 adducts CF3CHMeCH2CF2CHFCF3 (10) and CF3CH2CH2CHMeCH2CF2CHFCF3 (14), respectively, formed via hydrogen abstraction from C-H bonds γ to the CF3 group.However, dehydrogenation to give 1H,2H-hexafluoropropane (6) and the alkenes CF3CMe:CHMe (7) and CF3CH2CH2CH:CH2 (22) is a completing reaction which is more important the higher the temperature.The alkene (7) reacts further to give CF3CMe:CHCH2CF2CHFCF3 (9) and the cyclopentane (18) while the alkene (22) undergoes cyclodimerisation with hexafluoropropene to afford (11) and then the dehydrogenation product (13).A further product from the alkane (2) is the olefin CF3CH:CHCH2CH2CF2CHFCF3 (12) formed via hydrogen abstraction from a δ-C-H bond.Reaction does not occur between 1,1,1-trifluoro-4-trifluoromethylpentane and hexafluoropropene at 295 deg C.
