Direct Access to Tetrahydro[1,2]diazepinones from α,β-Epoxy‑<i>N</i>‑aziridinylimines via Anionic Rearrangement

A novel one-step synthetic approach to tetrahydro[1,2]diazepinones via base-promoted rearrangement of α,β-epoxy-<i>N</i>-aziridinylimines, derived from α,β-epoxyketones and <i>N</i>-aminoaziridines, has been developed

α‑Acyloxylation of Ketones/Cyclic Ethers Mediated by Hypervalent Iodine(III) Reagents as Oxidants and Nucleophilic Sources

This study describes a catalyst-free α-acyloxylation of ketones and a KBr-mediated α-acyloxylation of cyclic ethers. These conversions are effectively mediated by hypervalent iodine(III) reagents serving dual roles as the oxidant and nucleophilic source. Consequently, esters are produced directly in moderate to excellent yields. The proposed method features good functional group compatibility, a broad substrate scope, and high synthetic efficiency and is remarkably environmentally friendly