Electrophilic versus free radical reactions of halogens and halogen systems with perfluoroalkenes and a perfluoroalkylethylene
作者:Dale F Shellhamer、Jeannette L Allen、Rachel D Allen、Melissa J Bostic、Elizabeth A Miller、Colleen M O’Neill、Benjamin J Powers、Eric A Price、John W Probst、Victor L Heasley
DOI:10.1016/s0022-1139(00)00319-5
日期:2000.10
Alkene 3 is more reactive and gives products with electrophiles Cl2, Br2, BrCl, and ICl from ring-opening of the halonium ions at the terminal carbon. Disubstituted perfluoroalkenes 2 and 4 did not react ionically with Cl2, Br2, BrCl, or ICl. Free radical reactions of Cl2, Br2, BrCl, and ICl give good yields of dihaloproducts with 1 and 3. Yields are poor for the photochemical bromination of disubstituted