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Julio R. de la Fuente, Christian Aliaga, Alvaro Cañete, Gabriel Kciuk, Tomasz Szreder and Krzysztof Bobrowski Photoreduction of Azaoxoisoaporphines by Amines: Laser Flash and Steady-State Photolysis and Pulse Radiolysis Studies Photochemistry and Photobiology 89

Article first published online: 10 JUN 2013 | DOI: 10.1111/php.12087

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Photoreduction of 7H-benzo[e]perimidin-7-ones by amines proceeds through a stepwise electron-proton-electron transfer mechanism, which was studied by using laser flash photolysis, steady-state photolysis and pulse radiolysis. Later, to achieve the triplet state, the sequence of reaction generates a radical ion pair, which by proton transfer over the N1- and O-atoms of substrates yields two different hydrogenated radicals, likely in equilibrium. These neutral radicals by the second electron transfer lead to the metastable products. Transient absorptions for intermediaries were characterized by laser flash photolysis and pulse radiolysis.

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