Oxidized isoquinolinoisoindolinone and benzazepinoisoindolinone alkaloids cores by convergent cyclisation processes: π-aromatic attack of thionium and oxonium species

Oxidized isoquinolinoisoindolinone and benzazepinoisoindolinone alkaloids cores were synthesized efficiently by using π-cationic cyclisation of thionium and oxonium cations.