Access to unusual polycyclic spiro-enones from 2,2′-bis(allyloxy)-1, 1′-binaphthyls using Grubbs' catalysts: An unprecedented one-pot RCM/Claisen sequence

1. Piedra, E.
2. Francos, J.
3. Nebra, N.
4. Suárez, F.J.
5. Díez, J.
6. Cadierno, V.