Pd(II)-Catalyzed para-Selective C–H Arylation of Monosubstituted Arenes

Abstract
Pd-catalyzed highly para-selective C–H arylation of monosubstituted arenes (including toluene) is developed for the first time using an F+ reagent as a bystanding oxidant. This finding provides a new retrosynthetic disconnection for para-substituted biaryl synthesis via C–H/C–H cross-coupling.