Copper(I) mediated intramolecular cyclization of 2-(2-amino-phenylethynyl)benzoic and [2-(2-aminophenylethynyl)phenyl]acetic acid esters: A new synthetic step towards isoindolo[2,1-a]indoles and 5H-indolo[2,1-a]isoquinolines

1. Reboredo, F.J.
2. Treus, M.
3. Estévez, J.C.
4. Castedo, L.
5. Estévez, R.J.