Epoxidation of Alkenes with Molecular Oxygen as the Oxidant in the Presence of Nano-Al2O3

The nano-Al2O3-promoted epoxidation of alkenes with molecular oxygen as the oxidant has been developed, providing an efficient route to a variety of epoxides in moderate to excellent yields. The environmentally friendly and efficient nano-Al2O3 catalyst could be easily recovered and reused five times without significant loss of activity.