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- Title
Ultrasound-assisted synthesis of kojic acid-1,2,3-triazole based dihydropyrano[3,2-b]pyran derivatives using Fe<sub>3</sub>O<sub>4</sub>@CQD@CuI as a novel nanomagnetic catalyst.
- Authors
Najafi, Zahra; Esmaili, Soheila; Khaleseh, Behnam; Babaee, Saeed; Khoshneviszadeh, Mehdi; Chehardoli, Gholamabbas; Akbarzadeh, Tahmineh
- Abstract
The magnetic nanoparticles coated with carbon quantum dot and copper (I) iodide (Fe3O4@CQD@CuI) were used as eco-friendly heterogeneous Lewis / Brønsted 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.
- Subjects
FOURIER transform infrared spectroscopy techniques; PYRAN derivatives; NUCLEAR magnetic resonance spectroscopy; X-ray photoelectron spectroscopy; CATALYSTS recycling; TRANSMISSION electron microscopy
- Publication
Scientific Reports, 2022, Vol 12, Issue 1, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/s41598-022-24089-6