Electrochemical C(sp 3 )-H functionalization of ethers via hydrogen-atom transfer by means of cathodic reduction.

The chemo- and stereoselective electrochemical allylation/alkylation of ethers is presented a C(sp)-H activation event. The electrosynthetic protocol enables the realization of a large library of functionalized ethers (35 examples) in high yields (up to 84%) cathodic activation of a new type of redox-active carbonate (RAC), capable of triggering HAT (Hydrogen-Atom-Transfer) events through the generation of electrophilic oxy radicals. The process displayed high functional group tolerance and mild reaction conditions. A mechanistic elucidation voltammetric analysis completes the study.