Amination of 3‑Substituted Benzofuran-2(3H)‑ones Triggered by Single-Electron Transfer

An efficient amination reaction of 3-substituted benzofuran-2­(3H)-ones promoted by cesium carbonate was developed. A putative mechanism involving a single-electron-transfer event was proposed, which represents a new reactivity for benzofuran-2­(3H)-ones.