development of the Ir(III)-catalyzed direct C-H amidation of arenes and alkenes using acyl azides as the nitrogen source. This procedure utilizes an in situ generated cationic half-sandwich iridium complex as a catalyst. The reaction takes place under very mild conditions, and a broad range of sp(2) C-H bonds of chelate group-containing arenes and olefins are smoothly amidated with acyl azides without the intervention
Catalyst-Free Synthesis of Functionalized 4-Substituted-4<i>H</i>-Benzo[<i>d</i>][1,3]oxazines via Intramolecular Cyclization of <i>ortho-</i>Amide-<i>N</i>-tosylhydrazones