Harnessing the Reactivity of Nitroarene Radical Anions to Create Quinoline <i>N</i> ‐Oxides by Electrochemical Reductive Cyclization

Abstract Electrochemical reduction of 2‐allyl‐substituted nitroarenes using a simple, undivided electrochemical cell with non‐precious electrodes to generate nitroarene radical anions was developed. The nitroarene radical anion intermediates participate in 1,5‐hydrogen atom transfer reactions to construct quinoline N ‐oxides bearing aryl‐, heteroaryl‐, alkenyl‐, benzyl‐, sulfonyl‐, or carboxyl groups.