D. Burton, H. Tsao
Aug 1, 1988
Citations
0
Influential Citations
2
Citations
Journal
Journal of Fluorine Chemistry
Abstract
Abstract The reaction of 2,2,3,3,4,4-hexafluoro-1,5-diphenyl-pentane-1,5-dione, 4,4,5,5-tetrafluorooctane-3,6-dione and 4,4,5,5,6,6,-hexafluorononane-3,7-dione with excess triphenyl-phosphine and dibromodifluoromethane in triglyme at 10 °C gave modest yields (50-60%) of the corresponding dienes and enones (10-20%). No isomerized olefins were observed. Subsequent treatment of the dienes with tetraethylammonium fluoride gave the internal olefins, and thermal isomerization of 2,6-diphenyl-1-1,3,3,4,4,5,5,7,7-decafluoro-1,6-heptadiene to the internal isomeric olefins was observed at 250 °C.