Cp*Co(<scp>iii</scp>)-catalyzed ortho-amidation of azobenzenes with dioxazolones

Abstract

Cp*Co(iii)-catalyzed C-H amidation of azobenzene with dioxazolones has been developed. The amidation reaction does not require external oxidants and gives carbon dioxide as the only by-product. Both symmetrical and unsymmetrical azobenzenes were found to undergo amidation smoothly with broad functional group tolerance.