Visible-light-mediated ring opening and cyclization of aryl cyclopropanes: efficient synthesis of pyrrolo[1,2-a]quinoxalin-4(5H)-ones with antineoplastic activity.

Herein, we report the visible-light-mediated synthesis of pyrrolo[1,2-a]quinoxalin-4(5H)-ones from aryl cyclopropanes, quinoxalinones, hydrochloric acid, and nitric acid through ring opening and unexpected cyclization. This operationally simple and catalyst-free methodology opens...