Journal
RSC ADVANCES
Volume 7, Issue 48, Pages 30303-30309Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra04101b
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Funding
- The Research Council of Yazd University
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A bio-based magnetic nanocatalyst (Fe3O4@ nano-cellulose-OPO3H) has been made via immobilization of -OPO3H groups on a Fe3O4@ nano-cellulose surface. Fe3O4@ nano-cellulose was synthesized by coprecipitation of Fe3+ and Fe2+ salts in an aqueous suspension of nano-cellulose. The catalyst was characterized by FT-IR, FESEM, XRD, TGA, VSM, EDX, XRF and BET. It has been proved that such a heterogeneous catalyst shows high efficiency for the synthesis of dihydro-2-oxopyrrole derivatives via four-component reactions of amines, dialkyl acetylenedicarboxylates and aldehydes under mild reaction conditions. The present procedure is a green and environmental friendly approach that offers many advantages including high yield, easy work-up, simple recovery and reusability of the catalyst.
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