Sulfonated Silica Coated CoFe2O4 Magnetic Nanoparticles for the Synthesis of 3,4-Dihydropyrimidin-2(1H)-One and Octahydroquinazoline Derivatives

Sulfonated-silica-coated cobalt ferrite (CoFe2O4) magnetic nanoparticles (MNPs-SiCoFe-SO3H) are efficient heterogeneous catalysts for the synthesis of 3,4-dihydropyrimidin-2(1H)-one and octahydroquinazoline derivatives in the absence of solvent. The effects of solvent, temperature, and catalyst amou...

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Bibliographic Details
Published inCatalysts Vol. 13; no. 6; p. 989
Main Authors Afshari, Mozhgan, Carabineiro, Sónia A. C., Gorjizadeh, Maryam
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2023
Subjects
3,4-dihydropyrimidin-2(1H)-one derivative
Acids
Catalysts
Chemical reactions
Chemical synthesis
cobalt ferrite
Cobalt ferrites
Efficiency
magnetic nanoparticles
Nanocomposites
Nanoparticles
octahydroquinazoline derivatives
Recycling
Silicon dioxide
Solvents
Spectrum analysis
sulfonic acid
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Summary:Sulfonated-silica-coated cobalt ferrite (CoFe2O4) magnetic nanoparticles (MNPs-SiCoFe-SO3H) are efficient heterogeneous catalysts for the synthesis of 3,4-dihydropyrimidin-2(1H)-one and octahydroquinazoline derivatives in the absence of solvent. The effects of solvent, temperature, and catalyst amount on the reaction are investigated. The easy separation, reusability of the catalyst, simplicity of the procedure, mild reaction conditions, and good yields (68–95%) within short reaction times (15–70 min) are the advantages of this method. The catalyst can be reused up to eight times with not much loss of activity. Scanning electron microscopy images, X-ray diffraction spectra, and elemental analysis of the recycled catalyst show that the catalyst is stable after the reaction.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal13060989