A comparative and mechanistic study on regioselective photooxidative demethylation of N‐heterocyclics using TiO2 and molecular oxygen |
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| Authors: | Kambala&#x V Subba Rao,Basavaraju Srinivas,Pierre Boule,Machiraju Subrahmanyam |
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| Affiliation: | Kambala V Subba Rao,Basavaraju Srinivas,Pierre Boule,Machiraju Subrahmanyam |
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| Abstract: | Regioselective photooxidative demethylation of methyl‐substituted N‐containing heterocyclic compounds is investigated in non‐aqueous (ethane nitrile) solutions containing semiconductor oxide (TiO2) as photocatalyst in the presence of molecular oxygen upon irradiation at room temperature conditions. A plausible electron transfer mechanism, in which an electron‐hole pair is generated on the surface of TiO2 by illumination, is proposed for the semiconductor‐mediated photocatalysis. Molecular orbital calculation by the AM 1 method has been performed for the electron densities of N‐atoms of heterocyclics in the present study. © 2002 Society of Chemical Industry |
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| Keywords: | photocatalysis N‐heterocyclics regioselectivity TiO2 |
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