Hexafluorobenzene photochemistry: wellspring of fluorocarbon structures.
Ultraviolet irradiation of hexafluorobenzene in the vapor phase gives exclusively its Dewar valence isomer, from which a wealth of highly fluorinated compounds has been derived. Photoexcited in solution, hexafluorobenzene is capable of cycloaddition with a variety of unsaturated molecules. Like the Dewar benzene, resulting adducts have served as intermediates en route to many new fluorocarbons and fluorocarbon derivatives.
Lemal
D M
DM
Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, USA.