Iron‐Catalyzed Reductive Deoxygenation of Nitroarenes to Access N‐heterocycles

Herein, we present the example of iron‐catalyzed reductive amination of nitroarenes under the iron/borane system, providing diverse N‐heterocycles in moderate to good yields. This transformation has high efficiency, broad substrate scope, and good functional group compatibility. Preliminary mechanistic studies indicate that hydroxylamines derived from nitrosoarenes may serve as crucial intermediates rather than anilines, and free organic radicals may not participate in the catalytic cycle.