ISOMER CONVERSIONS IN PERFLUORO-1-ETHYLINDANE UNDER THE ACTION OF ANTIMONY PENTAFLUORIDE

Article abstract of DOI:10.1007/BF00959585

Perfluoro-1-ethylindane on heating with SbF5 is isomerized to perfluoro-1,1-dimethylindane, perfluoro-α,β,o-trimethylstyrene, and perfluoro-1,2-dimethylindane.In the presence of SbF5, the latter two products are converted one into the other.In addition, in SbF5 perfluoro-1,2-dimethylindane is defluorinated to perfluoro-2,3-dimethylindene and fluorinated to perfluoro-2,3-dimethyl-4,5,6,7-tetrahydroindene which is further fluorinated to perfluoro-1,2-dimethyl-4,5,6,7-tetrahydroindane and is converted at 200 deg C to perfluoro-1,7-dimethylindane.The latter is also formed on heating perfluoro-α,β,o-trimethylstyrene with SbF5 at 200 deg C.