New stereoselective intramolecular [2 + 2] cycloadditions between ketenimines and imines on an ortho-benzylic scaffold: 1,4-Asymmetric induction

1. Alajarin, M.
2. Vidal, A.
3. Tovar, F.
4. Ramirez de Arellano, M.C.
5. Cossio, F.P.
6. Arrieta, A.
7. Lecea, B.