Visible-Light Driven Photocascade Catalysis: Union of N,N-Dimethylanilines and α-Azidochalcones in Flow Microreactors.

N,N-Dimethylanilines were coupled with α-azidochalcones using visible-light driven Ru(bpy)3(PF6)2 catalyzed photocascade continuous flow microfluidic approach that involves the creation of one C-C and two C-N new bonds. The reaction involves dual photocatalysis ensuing two sp3 C-H bond functionalization of N,N-dimethylanilines. To explore the scope of the reaction, 20 different 1,3-diazabicyclo[3.1.0]hexanes were synthesized in good yields (55-71%).