Abstract We developed an efficient method for the transformation of indoles by utilizing a copper catalyst and molecular oxygen as the oxidant. The transformation involves a tandem oxidative process of 2-arylindoles. Our reaction afforded a variety of N-benzoyl anthranilic acids and benzoxazinones. Our investigation revealed that the choice of solvent and additives is critical in these reactions.
![2,2,2-trifluoro-N-[2-(2-phenylethynyl)phenyl]acetamide Structure](https://image.chemsrc.com/caspic/164/143360-89-8.png)