Steady-state and time-resolved studies on oxetane cycloreversion using (thia)pyrylium salts as electron-transfer photosensitizers.
[reaction: see text] Cycloreversion of oxetane 1 is achieved using (thia)pyrylium salts as photosensitizers. RadicaI cation intermediates involved in the electron-transfer process have been detected using laser flash photolysis. The experimental results are consistent with the reaction taking place from the triplet excited state of the sensitizer.
Miranda
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MA
Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino Vera s/n, Apdo. 22012, 46022 Valencia, Spain. mmiranda@qim.upv.es
Izquierdo
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MA
Galindo
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F