Synthesis of Polyfunctionalized 1-Aminobuta-1,3-dienes by Addition of Dimethyl Acetylenedicarboxylate to (Z)-β-Enamino-λ5-Phosphazenes. Configurational and Conformational Analysis Based on NOE Data, nJPX Coupling Constant, X-ray Structures, and Semiempirical Calculations

1. López-Ortiz, F.
2. Peláez-Arango, E.
3. Palacios, F.
4. Barluenga, J.
5. García-Granda, S.
6. Tejerina, B.
7. García-Fernández, A.