PhI(OAc) 2 -mediated intramolecular oxidative C-N coupling and detosylative aromatization: an access to indolo[2,3- b ]quinolines.

A PIDA mediated intramolecular oxidative C-N coupling and subsequent detosylative aromatization to afford indolo[2,3- b ]quinoline derivatives has been developed. This tandem reaction provided an efficient method for the synthesis of valuable indolo[2,3- b ]quinoline derivatives.