Visible-light-induced radical cascade cyclization of 2-isocyanobiaryls via 1,5-hydrogen atom transfer (1,5-HAT)†

Abstract

Herein, we reported the first attractive example of visible-light-induced radical cascade cyclization of 2-isocyanobiaryls for the synthesis of phenanthridines via 1,5-hydrogen atom transfer. The reaction circumvents the need for a base, metals, and high temperature, enabling the preparation of phenanthridines with a broad substrate scope and excellent functional group compatibility.