Rhenium-catalyzed deoxygenation of epoxides without adding any reducing agent

This work reports a novel method for the deoxygenation of epoxides catalyzed by oxo-rhenium (V) and (VII) complexes without adding any reducing agent. This eco-friendly methodology was successfully applied to the deoxygenation of several epoxides with tolerance of different functional groups and high reusability of the catalysts ReIO2(PPh3)2 and ReOCl3(PPh3)2.