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- Title
Magnetite-Containing Sulfonated Polyacrylamide as a Nanocatalyst for the Preparation of Biscoumarins.
- Authors
Boroujeni, Kaveh Parvanak; Hadizadeh, Shahla; Hasani, Sodabeh; Fadavi, Abdulhamid; Shahrokh, Mansooreh
- Abstract
Magnetite-containing sulfonated polyacrylamide was easily prepared through polymerization of the corresponding monomers followed by the reaction with Fe3O4 nanoparticles. The characterization of the obtained catalyst was performed by Fourier transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and vibrating sample magnetometer (VSM). The acidic SO3H moiety was found to be 1.1 mmol per gram of the obtained polymer. The catalytic activity of the polymer was examined for the synthesis of biscoumarin derivatives by two-component one-pot domino Knoevenagel-type condensation/Michael reaction between aldehydes and 4-hydroxycoumarin. Biscoumarins were obtained in high to excellent yields in short time. The work-up procedure of this reaction was very simple. The catalyst is stable (as a bench top catalyst) with easy-handling and it can be used again.
- Subjects
COUMARINS; HETEROCYCLIC compounds synthesis; MAGNETITE; POLYACRYLAMIDE; SULFONATES; FOURIER transform infrared spectroscopy
- Publication
Acta Chimica Slovenica, 2017, Vol 64, Issue 3, p692
- ISSN
1318-0207
- Publication type
Article
- DOI
10.17344/acsi.2017.3437