Ethyl 4,4-dimethyl pyroglutamate (DMPG): A chiral auxiliary in cyclopropanation and carbonyl group activator

1. Mantecón, S.
2. Vaquero, J.J.
3. Losada, P.G.
4. De La Puente, M.L.
5. Espinosa, J.F.
6. Rivera-Sagredo, A.
7. Ezquerra, J.