Embracing Heterogeneous Photocatalysis: Evolution of Photocatalysts in Annulation of Dimethylanilines and Maleimides

Recent advances in visible-light-promoted construction of tetrahydroquinolines from dimethylanilines and maleimides are documented. Homogeneous and heterogeneous photocatalytic systems, as well as the reaction mechanism, are emphasized. The mechanism of this photocatalytic annulation reaction is quite clear,