| Autor: |
Saeed Khodabakhshi, Bahador Karami, Khalil Eskandari, S. Jafar Hoseini, Hasan Nasrabadi |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Arabian Journal of Chemistry, Vol 10, Iss S2, Pp S3907-S3912 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
1878-5352 |
| DOI: |
10.1016/j.arabjc.2014.05.030 |
| Popis: |
The Fe3O4 nanoparticles were successfully prepared and characterized by X-ray diffraction (XRD), Fourier transform-infrared (FT-IR), and transmission electron microscopy (TEM). The magnetic property of the prepared nanoparticles was investigated by magnetization analysis and the measured magnetization of NPs was found to be considerably lower than the values measured from bulk magnetite. The catalytic efficiency of the prepared nanoparticles was subsequently investigated as a magnetically recyclable and safe catalyst for the green synthesis of new dicoumarols via the one-pot condensation of 4-hydroxycoumarin with aryl glyoxals on water. Catalyst loadings can be as low as 2 mol% to give good yields of the corresponding products. This present method has many advantages, such as the high product yield, avoidance of toxic organic solvents, and simple work-up procedure. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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