Cercosporin-photocatalyzed sp3 (C-H) activation for the synthesis of pyrrolo[3,4-c]quinolones.

We reported a new method that visible light along with cercosporin, one of the naturally occurring perylenequinonoid pigments with excellent properties of photosensitization, photocatalyzed sp3 (C-H) activation for the synthesis of pyrrolo[3,4-c]quinolones through the annulation of anilines and maleimides under mild conditions.