Specific synthesis of 1,2- and 1,3-dialkylidenecycloheptanes by [3+2+2] cyclization of alkenyl Fischer carbene complexes and allenes

1. Barluenga, J.
2. Vicente, R.
3. Barrio, P.
4. Loṕez, L.A.
5. Tomás, M.
6. Borge, J.