Comparison of several heterogeneous catalysts in the epoxidation of α-isophorone with hydroperoxides

Abstract Three different methods of epoxidation using heterogeneous catalysts are compared, under different conditions, in the benchmark epoxidation of α-isophorone. The use of tert -butyl hydroperoxide/KF Al 2 O 3 in toluene leads to the highest quantitative) yield, whereas the system H 2 O 2 /hydrotalcite leads to the best result described to date using this oxidant.