Stereoselective Nitration of Olefins via Visible-Light-Induced Iron-Complex β-Homolysis

Herein, we develop a green and efficient method for the stereoselective synthesis of nitroolefins with ferric nitrate as the nitration reagent. With a visible-light-induced iron-complex β-homolysis pathway and I^- as a crucial media for electron transfer and dehydrogenation, a broad scope of nitroolefins including some valuable biorelevant derivatives are achieved in high <i>E</i>-selectivity. The reaction is conveniently controlled by nitrate equivalences, and scale-up experiments in batch and flow indicate excellent practicability for this protocol.