Organocatalytic asymmetric synthesis of oxazolidino spiropyrazolinones via N,O-acetalization/aza Michael addition domino reaction between N-Boc pyrazolinone ketimines and γ-hydroxyenones

1. Gil-Ordóñez, M.
2. Martín, L.
3. Maestro, A.
4. Andrés, J.M.