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Inne
Sulfonic acid-functionalized silica-coated magnetic nanoparticles as a reusable catalyst for the preparation of pyrrolidinone derivatives under eco-friendly conditions.
Autorzy
Rok wydania
2019
Czasopismo
Numer woluminu
11
Strony
2933-2943
DOI
10.1007/s12633-019-0087-2
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The surface of silica-coated CoFe2O4 magnetic nanoparticles (CoFe2O4@SiO2), which is resistant to the oxidation due to silicone coating, was functionalized using chlorosulfonic acid and used as an efficient and recyclable catalyst for the preparation of 3-pyrrolin-2-ones from diethyl acetylenedicarboxylate, an aldehyde and aniline in ethanol solvent at 60 °C. In the presented study, some fascinating chracteritics of such catalyst, such as magnetically separable, simple workup and obtaining a high purity of products by simple recrystallization, have been successfully obtained. The structural features of CoFe2O4@SiO2-SO3H catalyst were elucidated by X-ray powder diffraction (XRPD), thermo-gravimetric studying (TGA), scanning electron microscopy (SEM) and FT-IR spectra.
Słowa kluczowe
Cobalt ferrite, Silica-coated, Sulfonic acid-functionalized, Reusable catalyst, Magnetic nanoparticles, 3-pyrrolin-2-ones
Adres publiczny
http://dx.doi.org/10.1007/s12633-019-0087-2
Strona internetowa wydawcy
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