Synthesis of Novel Azo-Linked 5-Amino-Pyrazole-4-Carbonitrile Derivatives Using Tannic Acid–Functionalized Silica-Coated Fe3O4 Nanoparticles as a Novel, Green, and Magnetically Separable Catalyst Article Swipe
Farhad Sedighi Pashaki
,
Mohammad Nikpassand
·
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.3389/fchem.2021.724745
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.3389/fchem.2021.724745
Tannic acid–linked silica-coated Fe 3 O 4 nanoparticles (Fe 3 O 4 @SiO 2 @Tannic acid) were prepared and characterized by transmission electron microscope (TEM), field emission scanning electron microscope (FE-SEM), X-ray powder diffraction (XRD), X-ray spectroscopy (EDX), vibrating sample magnetometry (VSM), and Fourier transform infrared (FT-IR) spectroscopy. Fe 3 O 4 @SiO 2 @Tannic acid supplies an environmentally friendly procedure for the synthesis of some novel 5-amino-pyrazole-4-carbonitriles through the three - component mechanochemical reactions of synthetized azo-linked aldehydes, malononitrile, and phenylhydrazine or p -tolylhydrazine. These compounds were produced in high yields and at short reaction times. The catalyst could be easily recovered and reused for six cycles with almost consistent activity. The structures of the synthesized 5-amino-pyrazole-4-carbonitrile compounds were confirmed by 1 H NMR, 13 C NMR, and FTIR spectra, and elemental analyses.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3389/fchem.2021.724745
- OA Status
- gold
- Cited By
- 7
- References
- 41
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W3213095018
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W3213095018Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3389/fchem.2021.724745Digital Object Identifier
- Title
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Synthesis of Novel Azo-Linked 5-Amino-Pyrazole-4-Carbonitrile Derivatives Using Tannic Acid–Functionalized Silica-Coated Fe3O4 Nanoparticles as a Novel, Green, and Magnetically Separable CatalystWork title
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2021Year of publication
- Publication date
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2021-11-12Full publication date if available
- Authors
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Farhad Sedighi Pashaki, Mohammad NikpassandList of authors in order
- Landing page
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https://doi.org/10.3389/fchem.2021.724745Publisher landing page
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
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https://doi.org/10.3389/fchem.2021.724745Direct OA link when available
- Concepts
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Tannic acid, Malononitrile, Catalysis, Fourier transform infrared spectroscopy, Nuclear chemistry, Pyrazole, Chemistry, Scanning electron microscope, Infrared spectroscopy, Materials science, Benzaldehyde, Organic chemistry, Chemical engineering, Composite material, EngineeringTop concepts (fields/topics) attached by OpenAlex
- Cited by
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7Total citation count in OpenAlex
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2025: 1, 2024: 3, 2023: 1, 2022: 2Per-year citation counts (last 5 years)
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41Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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| referenced_works | https://openalex.org/W2965636835, https://openalex.org/W2047483586, https://openalex.org/W2067459867, https://openalex.org/W2153077155, https://openalex.org/W6729964736, https://openalex.org/W2063464653, https://openalex.org/W3154555034, https://openalex.org/W2582496446, https://openalex.org/W1983632513, https://openalex.org/W2789976090, https://openalex.org/W3028533124, https://openalex.org/W2023971109, https://openalex.org/W2085386068, https://openalex.org/W2166685981, https://openalex.org/W1979601556, https://openalex.org/W2133644360, https://openalex.org/W2980664213, https://openalex.org/W2307004436, https://openalex.org/W1991607432, https://openalex.org/W2328252312, https://openalex.org/W1654338126, https://openalex.org/W2609278286, https://openalex.org/W2517826911, https://openalex.org/W2888197483, https://openalex.org/W2974958740, https://openalex.org/W2175166356, https://openalex.org/W2023639591, https://openalex.org/W2319460557, https://openalex.org/W2595118470, https://openalex.org/W2063541292, https://openalex.org/W2090462112, https://openalex.org/W2946109506, https://openalex.org/W2025321857, https://openalex.org/W1973487828, https://openalex.org/W2950571452, https://openalex.org/W2951549312, https://openalex.org/W3008572150, https://openalex.org/W2944484624, https://openalex.org/W2064191297, https://openalex.org/W2331418737, https://openalex.org/W2555174641 |
| referenced_works_count | 41 |
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