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method for the synthesis of a series of biologically and
65
70
75
pharmacologically active 4Hꢀpyran derivatives catalyzed by
Fe3O4 NPs/MWCNTs using a threeꢀcomponent condensation in
ethanol as a green solvent. In this regard, we have prepared the
catalyst and confirmed the nanostructure of Fe3O4 NPs on the
surface of MWNTs by XRD, SEM and TEM images. We found
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reaction mixture by an external permanent magnet. The key
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10 simplicity, reusable catalyst, nonꢀtoxic solvent, short reaction
time, minimum pollution of the environment and purification of
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useful and attractive process for the preparation of the requested
compounds.
5
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Notes and references
a Department of Chemistry, College of Science, University of Guilan, PO
20 Box 41335–1914, Rasht, Iran. Fax:
+981313233262; Tel: +981313233262; E-mail: a.f.shojaie@guilan.ac.ir
† Electronic Supplementary Information (ESI) available: [details of any
supplementary information available should be included here]. See
DOI: 10.1039/b000000x/
25 ‡ Footnotes should appear here. These might include comments relevant
to but not central to the matter under discussion, limited experimental and
spectral data, and crystallographic data.
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