Carbon Nitride‐Catalyzed Photoredox CC Bond Formation with N‐Aryltetrahydroisoquinolines

Abstract In this communication we describe the oxidative CC bond formation of tertiary amines with various nucleophiles under very mild and environmental friendly conditions by using mesoporous graphitic carbon nitride (mpg‐C 3 N 4 ) semiconductor as a heterogeneous, metal‐free photosensitizer in combination with visible light and oxygen as the terminal oxidation agent. This system can be further combined with proline‐organocatalysis to achieve oxidative tandem photocatalysis, demonstrating a rich cascade of chemical possibilities of the current photosynthesis system.