Photochemical oxidation - Indira, S.;Sivaguru, P.;Lalitha, A.
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The present study pertains to the photochemical oxidation of p-chloroaniline using TiO2 (catalyst) and H2O2 (oxidant) obtained the corresponding 4,4'- dichloroazobenzene (I), 4,4'-dichloroazoxybenzene (III) and an unexpected 4,4'- dichloro-2-hydroxyazobenzene (II) was also formed in low yield due to the photochemical Wallach rearrangement of the 4,4'-dicholoroazoxybenzene. Almost 84% of 4,4'-dichloro azoxybenzene derivative was obtained when using TiO2 along with H2O2. Then, with a mixture of HY-zeolite and TiO2 along with H2O2 in which the percentage of compound I was increased (79%) with the…mehr

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Produktbeschreibung
The present study pertains to the photochemical oxidation of p-chloroaniline using TiO2 (catalyst) and H2O2 (oxidant) obtained the corresponding 4,4'- dichloroazobenzene (I), 4,4'-dichloroazoxybenzene (III) and an unexpected 4,4'- dichloro-2-hydroxyazobenzene (II) was also formed in low yield due to the photochemical Wallach rearrangement of the 4,4'-dicholoroazoxybenzene. Almost 84% of 4,4'-dichloro azoxybenzene derivative was obtained when using TiO2 along with H2O2. Then, with a mixture of HY-zeolite and TiO2 along with H2O2 in which the percentage of compound I was increased (79%) with the decrease in the compound III (17%) and 3% of compound II. In all the cases rearranged compound II (2-3%) has been obtained in very low. The product selectivity obtained during the use of zeolite may be well appreciated.
Autorenporträt
Ms. S. Indira has received her M.Sc. degree in Chemistry from Periyar University. She has experienced in photochemical oxidation. Her research interest includes bio-inorganic chemistry.