Fig. 1: C–H phosphorylation of arenes.

a Transition metal-catalyzed directed arene C–H phosphorylation. b Radical-mediated C–H phosphorylation of arenes. c Envisioned strategy for increasing the reactivity of P-radicals. d Electrochemical arene C–H phosphorylation in continuous flow (this work). DG directing group. BQ p-benzoquinone. EDG electron-donating group. EWG electron-withdrawing group.