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    • Cu-MCM-41 nanoparticles: An efficient catalyst for the synthesis of 5-substituted 1𝐻-tetrazoles via [3+2] cycloaddition reaction of nitriles and sodium azide

      Mohammad Abdollahi-Alibeik Ali Moaddeli

      Regular Articles Volume 128 Issue 1 January 2016 pp 93-99

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/128/01/0093-0099

    • Keywords

       

      5-substituted 1𝐻-tetrazoles; heterogeneous catalyst; Cu-MCM-41; nanoparticles; cyclization.

    • Abstract

       

      [3+2] cycloaddition reaction of various types of nitriles and sodium azide (NaN3) were studied in the presence of nano-sized Cu-MCM-41 as an efficient recoverable heterogeneous catalyst. Nano-sized Cu-MCM-41 mesoporous molecular sieves with various Si/Cu molar ratios were synthesized by direct insertion of metal ions at room temperature. The textural properties of the materials have been studied by means of XRD, FTIR, SEM and TEM techniques. Catalytic behavior of Cu-MCM-41 was also investigated by pyridine absorption and potentiometric titration. The reactions data verified characterization results and show that Cu-MCM-41 with Si/Cu molar ratio of 20 has considerably better catalytic activity compared to the other molar ratios. To investigate reusability, the catalyst was recovered by simple filtration and reused for several cycles with consistent activity.

    • Author Affiliations

       

      Mohammad Abdollahi-Alibeik1 Ali Moaddeli1

      1. Department of Chemistry, Yazd University, Yazd 89158-13149, Iran

    • Dates

       
      Published
      January 2016
      Manuscript received
      12 August 2015
      Manuscript revised
      20 October 2015
      Accepted
      9 November 2015

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