Polyoxovanadometalate‐Catalyzed Selective Epoxidation of Alkenes with Hydrogen Peroxide

The bis(μ-hydroxo)-bridged dioxovanadium site in [γ-1,2-H2SiV2W10O40]4− catalyzes the epoxidation of alkenes in the presence of only one equivalent of H2O2 with a high yield of epoxide, high efficiency of H2O2 utilization, unusual regioselectivity, and unprecedented diastereoselectivity (see picture).