Journal
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
Volume 13, Issue 12, Pages 2301-2308Publisher
SPRINGER
DOI: 10.1007/s13738-016-0949-0
Keywords
Pyrano-pyrazoles; Green chemistry; Heteropolyacids; Magnetic catalyst; Multicomponent reaction; One-pot reactions; MCRs; Heterogeneous catalysis
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Funding
- Iran National Science Foundation (INSF)
- Alzahra University
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A novel nanomagnetic composite heteropolyacid immobilized chitosan/Fe3O4 was prepared via a facile one-pot synthetic approach. This magnetically recoverable nanocatalyst, H3PMo12O40/chitosan/Fe3O4 (PMo/chit/Fe3O4), was fully characterized by XRD, FTIR, SEM and EDX analysis methods. A rapid, efficient and the chemoselective synthesis of different pyrano-pyrazole derivatives was achieved in excellent yields via a one-pot four-component reaction in the presence of catalytic amount of PMo/Chit/Fe3O4.
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