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A Novel Polymer Supported Copper(II) Complex as Reusable Catalyst in Oxidative Esterification

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Abstract

Polymer anchored copper(II) complex of 2-acetylbenzimidazole was synthesized and characterized by elemental analysis, FT-IR, UV–Vis/DRS spectroscopy, magnetic moment, ESR, XPS, FE-SEM and thermogravimetric analysis. The catalytic activity of polymer supported [PS-CuCl2(ABIMZ)2] complex was investigated for oxidative esterification of different substituted aldehydes and alcohols using H2O2 as an oxidant. Influence of various factors, towards the formation of products, like effect of temperature, concentration of oxidant and concentration of catalyst were studied. PS-CuCl2(ABIMZ)2shows good catalytic activity and selectivity compared to unsupported CuCl2(ABIMZ)2 complex. Based on the results obtained, a tentative mechanism has been proposed. Under the optimized reaction conditions, the catalyst showed recycling ability up to five runs without any appreciable loss of its activity.

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Acknowledgements

Author JC thank JNCASR for RA. Authors are thankful to Bangalore University for providing research facilities. Thermax Ltd. India is gratefully acknowledged for providing polymer beads.

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Authors and Affiliations

  1. Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, 560064, India

    A. S. Jeevan Chakravarthy

  2. Department of Chemistry, Central College Campus, Bangalore University, Dr. Ambedkar Vedhi, Bangalore, Karnataka, 560001, India

    M. J. Madhura & V. Gayathri

Authors
  1. A. S. Jeevan Chakravarthy
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  2. M. J. Madhura
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  3. V. Gayathri
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Correspondence to A. S. Jeevan Chakravarthy or V. Gayathri.

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Chakravarthy, A.S.J., Madhura, M.J. & Gayathri, V. A Novel Polymer Supported Copper(II) Complex as Reusable Catalyst in Oxidative Esterification. Catal Lett 154, 725–736 (2024). https://doi.org/10.1007/s10562-023-04337-8

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