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چکیده
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In this study, an environmentally and efficient nanopores-catalyst was prepared by functionalization of copper complex of 1-(benzo[d]thiazol-2-yl)urea on Santa Barbara Amorphous-15 (SBA-15). A new ligand was designed to modify the SBA-15 surface to achieve a high-performance catalyst. The novel ligand on modified SBA-15 proved to be an effective host for immobilizing Cu(II) ions. The synthesised catalyst (Cu-B[d]TU@SBA-15) was characterized by XRD, FE-SEM, WDX, BET, EDS, AAS, and FT-IR techniques. Cu-B[d]TU@SBA-15 catalyst was successfully applied in the synthesis of tetrazoles through [3 + 2] cycloaddition reaction of sodium azide (NaN3) and derivatives of nitrile. In the application test of this catalyst, all tetrazole products were synthesized with high yields and TOF values. In synthesizing tetrazoles, the catalyst shows high yields in short reaction times at 120 °C in polyethylene glycol-400 (PEG-400) as a cheap and green solvent. The synthesized tetrazoles were confirmed by NMR spectroscopy and melting point data. Also, the prepared catalyst showed high reusability and was reused 5 times without significantly decreasing of its catalytic activity. The stability of Cu-B[d]TU@SBA-15 catalyst was confirmed by leaching test, and also, SEM, XRD, FT-IR and AAS techniques after reusing.
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