One of the primary uses of mCPBA in catalysis is in the oxidation of alkenes to form epoxides. This reaction is highly selective and often carried out under mild conditions, making mCPBA a preferred reagent for epoxidation. Additionally, mCPBA is employed in the oxidation of sulfides to sulfoxides and sulfones, the Baeyer-Villiger oxidation of ketones to esters, and in the conversion of amines to nitro compounds.