Rhodium(iii)-catalyzed ortho-C–H amidation of 2-arylindazoles with a dioxazolone as an amidating reagent

A simple and efficient method for directed amidation of a wide range of 2-arylindazoles has been established for the first time through a rhodium-catalyzed C–H activation reaction with alkyl, aryl and heteroaryl dioxazolones.