A novel L-asparaginyl Amido ethyl methyl imidazolium bromide catalyst for heterogeneous epoxidation of α, β-unsaturated ketones

Abstract In the present work, a class of imidazolium based ionic liquid coupled with asparagine system was employed for asymmetric epoxidation. The heterogeneous catalyst exhibited excellent activity for epoxidation of α, β-unsaturated ketones, affording the corresponding epoxy ketones in the presence of hydrogen peroxide. The catalyst was easily recovered from the reaction mixture and reused for five consecutive runs.