A new bis(perfluorocyclohexane carbonyl) peroxide was prepared by the
reaction of the corresponding acyl fluoride and hydrogen peroxide. Thi
s peroxide was applicable for the direct introduction of perfluorocycl
ohexyl group into various organic molecules such as acrylic acid oligo
mer, benzene and polystyrene; in particular interest, not only equator
ial but also axial conformational isomers were isolated in phenylperfl
uorocyclohexane thus obtained.