Hydrogenation of substituted nitroarenes by a polymer-bound palladium(II) Schiff base catalyst

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Alexander, S. and Udayakumar, V. and Nagaraju, N. and Gayathri, V. (2010) Hydrogenation of substituted nitroarenes by a polymer-bound palladium(II) Schiff base catalyst. Transition Metal Chemistry, 35 (2). pp. 247-251. ISSN 1572-901X

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Official URL: https://doi.org/10.1007/s11243-009-9320-y

Abstract

The catalytic activity of a polymer-bound palladium Schiff base catalyst was investigated toward the reduction of aryl nitro compounds under ambient temperature and pressure. The dependence of the rate of hydro- genation of o-nitroaniline and o-nitrotoluene on substrate concentration, catalyst concentration and temperature has been determined. Based on the results obtained a plausible mechanism for the hydrogenation reaction is proposed and a rate expression is deduced. The energy and entropy of activation have been evaluated from the kinetic data. The polymer-bound catalyst was found to be better than its homogeneous analog PdCl2(NSBA) NSBA = N-salicy- lidene benzylamine for both stability and reusability. Recycling studies revealed that the catalyst could be used six times without metal leaching or significant loss in activity. © Springer Science+Business Media B.V. 2009.

Item Type: Article
Additional Information: cited By 5
Uncontrolled Keywords: Ambient temperatures; Benzylamines; Catalyst concentration; Catalytic activity; Entropy of activation; Hydrogenation reactions; Kinetic data; Metal leaching; Nitro compounds; Nitroanilines; Nitroarenes; Nitrotoluene; Plausible mechanisms; Rate expression; Schiff base catalysts; Substrate concentrations, Functional groups; Hydrogenation; Leaching; Organic polymers; Palladium; Palladium compounds; Polymers; Reusability, Catalysts
Subjects: Faculty of Science > Pure Sciences > Chemistry
Divisions: Jnana Bharathi / Central College Campus > Department of Chemistry
Depositing User: Mr. Kirana Kumar D
Date Deposited: 21 Mar 2016 10:16
Last Modified: 21 Mar 2016 10:16
URI: http://eprints-bangaloreuniversity.in/id/eprint/2246

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