Metal‐Free and Visible‐Light‐Promoted C‐3 Thiocyanation of 2‐Arylquinolin‐4‐ones

Abstract

A C‐3 thiocyanation of 2‐aryl‐quinolin‐4‐ones in the presence of eosin‐Y and visible light has been developed. The methodology allows easy access to a variety of 2‐aryl‐3‐thiocyano‐quinolin‐4‐ones in moderate to high yields. Regioselective para ‐thiocyanation of anilines has also been achieved under these conditions. The reaction is operationally simple, metal‐free, requires air as the oxidant, and proceeds smoothly at room temperature.