**Sharpless AE** (asymmetric epoxidation): allylic alcohol + TBHP + Ti(OiPr)₄ + chiral DET → chiral epoxide. - **Sharpless AD** (asymmetric dihydroxylation): alkene + OsO₄ + NMO + chiral cinchona ligand → chiral cis-diol. - **Jacobsen epoxidation**: Mn-salen catalyst for unfunctionalized alkenes.