Efficient Photoinduced Electron Transfer in Papaverine N-Oxide: Regioselective Intramolecular Hydroxylation of Papaverine as an Alternative Disconnection for the Synthesis of Cularine Alkaloids

Article abstract of DOI:10.1016/0040-4039(95)00325-7

The photochemistry of papaverine N-oxide in polar aprotic and protic solvents has been studied in detail.Complex energy and charge transfer phenomena between chromophores occur in papaverine.Irradiation in protic media results in the formation of an emissive charge transfer state with concomitant intramolecular hydroxylation.