Catalytic oxidations using cobalt(II) complexes - Advances in Catalytic Activation of Dioxygen by Metal Complexes - page 295

The approach of fluorous biphase systems 106 utilizes the low miscibilities
of fluorocarbons with most organic solvents, which allow easy separation of
a catalyst soluble in the fluorocarbon phase from the product soluble in the
organic phase 106,107 . The fluorocarbon-soluble cobalt complex of the
tetraarylporphyrin ligand in Figure 38 catalyzes the epoxidation of alkenes