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Ultrasound-Assisted Synthesis of Kojic Acid-1,2,3-Triazole Based Dihydropyrano[3,2-B]Pyran Derivatives Using Fe3o4@Cqd@Cui As a Novel Nanomagnetic Catalyst Publisher Pubmed



Najafi Z1 ; Esmaili S2 ; Khaleseh B1 ; Babaee S2 ; Khoshneviszadeh M3 ; Chehardoli G1 ; Akbarzadeh T4
Authors

Source: Scientific Reports Published:2022


Abstract

The magnetic nanoparticles coated with carbon quantum dot and copper (I) iodide (Fe3O4@CQD@CuI) were used as eco-friendly heterogeneous Lewis / Bronsted acid sites and Cu (I) nanocatalysts. In the first step, it was applied in the synthesis of kojic acid-based dihydropyrano[3,2-b]pyran derivatives in a three-component reaction and in the second step, as a recyclable catalyst for the synthesis of kojic acid-1,2,3-triazole based dihydropyrano[3,2-b]pyran derivatives in the CuI-catalyzed azide/alkyne cycloaddition (CuAAC) reaction. The catalyst was characterized fully by using the different techniques including fourier transform infrared spectroscopy (FT-IR), elemental mapping analysis, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), X-ray spectroscopy (EDX), transmission electron microscopy (TEM), thermal gravimetric (TG) and value-stream mapping (VSM) methods. The final synthesized derivatives were identified by 1H- and 13C-NMR spectroscopy. © 2022, The Author(s).
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