Iron-Catalyzed Borylation of Aryl Ethers via Cleavage of C-O Bonds

Herein, we report the iron-catalyzed borylation of aryl ethers and aryl amines via deavage of C-O and C-N bonds. This protocol does not require the use of Grignard reagents and displays a broad substrate scope, which allows the late-stage borylation. It also provides facile access to multisubstituted arenes through C-H fiinctionalization using 2-pyridyloxy as the directing group.