Direct C-H Bond Arylation of (Hetero)arenes with Aryl and Heteroarylboronic Acids

A novel microwave-promoted protocol mediated by Mn(OAc)(3) was developed for the single-electron-transfer oxidative direct C-H bond arylation of (hetero)arenes with aryl and heteroarylboronic acids. Various electron-deactivated and electron-rich heteroarenes and benzene underwent successfully the direct arylation in this general process. The use of slight excess of heteroarene or benzene in this method was found to be sufficient.