Gold-facilitated '6-exo-dig' intramolecular cyclization of 2-[(2-nitrophenyl)ethynyl]phenylacetic acids: General access to 5H-benzo[b]carbazole-6,11-diones

1. Salas, C.O.
2. Reboredo, F.J.
3. Estévez, J.C.
4. Tapia, R.A.
5. Estévez, R.J.