Preparation of [5 + 6]‐, [6 + 6]‐, and [6 + 7]‐Bicyclic Guanidines from C,C'‐Bis(iminophosphoranes)

1. Molina, P.
2. Obòn, R.
3. Conesa, C.
4. Arques, A.
5. De Velasco, M.L.D.
6. Llamas‐Saiz, A.L.
7. Foces‐Foces, C.