Inverse electron demand Diels-Alder reactions of psoralens. Synthesis and mass spectra of novel pyridazinocoumarins

1. Gonzalez, J.C.
2. Dedola, T.
3. Santana, L.
4. Uriarte, E.
5. Begala, M.
6. Copez, D.
7. Podda, G.