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Encapsulation of a copper(II) tetradentate Schiff base complex in zeolite NaY: an efficient heterogeneous catalyst for the synthesis of benzimidazoles

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Abstract

A copper(II) complex of 2,2′-(((methylenebis(oxy))bis(2,1-phenylene))-bis(azanylylidene))bis(methanylylidene)) diphenol (H2L) was encapsulated in the supercages of zeolite NaY by the flexible ligand method. The resulting product was characterized by physicochemical and spectroscopic methods. The encapsulated complex and its corresponding free complex were used as catalysts for the synthesis of benzimidazoles. The results showed that the catalytic activity and stability of the complex were both increased by encapsulation. The effects of amount of catalyst, solvent, leaching and reusability of the heterogeneous catalyst were investigated.

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Acknowledgments

We gratefully acknowledge the financial support from the Research Council of Arak University.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Arak University, 38156-8-8349, Arāk, Iran

    Akbar Mobinikhaledi, Mojgan Zendehdel, Seyed Mohammad-Bagher Hosseini-Ghazvini & Parvin Safari

Authors
  1. Akbar Mobinikhaledi
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  2. Mojgan Zendehdel
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  3. Seyed Mohammad-Bagher Hosseini-Ghazvini
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  4. Parvin Safari
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Corresponding authors

Correspondence to Seyed Mohammad-Bagher Hosseini-Ghazvini or Parvin Safari.

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Mobinikhaledi, A., Zendehdel, M., Hosseini-Ghazvini, S.MB. et al. Encapsulation of a copper(II) tetradentate Schiff base complex in zeolite NaY: an efficient heterogeneous catalyst for the synthesis of benzimidazoles. Transition Met Chem 40, 313–320 (2015). https://doi.org/10.1007/s11243-015-9919-0

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