Stereoselective Synthesis of Pyrroloquinolines by a Brønsted Acid Catalyzed [4+2]-Heterocyclization of Indole-7-Carbaldehydes, Anilines and Electron-Rich Alkenes

1. Galván, A.
2. Fontaneda, R.
3. Fañanás, F.J.
4. Rodríguez, F.