Comparative Catalytic Activity of Group 9 [Cp*MIII] Complexes: Cobalt‐Catalyzed CH Amidation of Arenes with Dioxazolones as Amidating Reagents

A procedure for the [Cp*Co(III)]-catalyzed direct C-H amidation of arenes with dioxazolone has been developed. This reaction proceeds under straightforward and mild conditions with a broad range of substrates, including anilides. A comparative study on the catalytic activity of Group 9 [{Cp*MCl2}2] complexes revealed the unique efficiency of the cobalt catalyst.