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Synthesis and properties of novel reusable nano-ordered KIT-5-N-sulfamic acid as a heterogeneous catalyst for solvent-free synthesis of 2,4,5-triaryl-1 H-imidazoles

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Abstract

A novel silica-bonded propyl-N-sulfamic acid nanocatalyst (NHSO3H-KIT-5) supported on modified silica mesopore KIT-5 as an organic-inorganic hybrid with high specific surface area was successfully prepared. The 3-aminopropyltriethoxysilane (APTES) on KIT-5 was reacted with chlorosulfonic acid and accurately characterized by the FT-IR, XRD, SEM, EDAXS, and TGA techniques. This heterogeneous and recyclable catalyst catalyzed one pot, multicomponent condensation of benzil, aromatic aldehydes, and ammonium acetate in the presences of 0.05 g of nanocatalyst under solvent-free conditions to afford triaryl-imidazoles in excellent yields. This catalyst showed high catalytic activity under green conditions. This reaction was performed under open air conditions and required no special reaction conditions or chromatographic separation for purification.

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Authors and Affiliations

  1. Department of Chemistry, Yazd Branch, Islamic Azad University, Yazd, 89168-71967, Iran

    Razieh Mirsafaei

  2. Young Researcher Club, Shahreza Branch, Islamic Azad University, Shahreza, Isfahan, 63731-93719, Iran

    Razieh Mirsafaei

  3. Department of Chemistry, Alzahra University, Vanak, 19938-93973, Tehran, Iran

    Majid M. Heravi & Tayebeh Hosseinnejad

  4. Iran Polymer and Petrochemical Institute, Tehran, 14977-13115, Iran

    Shervin Ahmadi

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  1. Razieh Mirsafaei
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  2. Majid M. Heravi
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Mirsafaei, R., Heravi, M.M., Ahmadi, S. et al. Synthesis and properties of novel reusable nano-ordered KIT-5-N-sulfamic acid as a heterogeneous catalyst for solvent-free synthesis of 2,4,5-triaryl-1 H-imidazoles. Chem. Pap. 70, 418–429 (2016). https://doi.org/10.1515/chempap-2015-0228

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