Author/Authors :
Ayati, Ali Department of Chemical Engineering - Quchan University of Advanced Technology, Quchan, Iran , Heravi, Majid M. Department of Chemistry - School of Sciences - Alzahra University, Vanak, Tehran, Iran , Daraie, Mansoureh Department of Chemistry - School of Sciences - Alzahra University, Vanak, Tehran, Iran , Tanhaei, Bahareh Department of Chemical Engineering - Quchan University of Advanced Technology, Quchan, Iran , Bamoharram, Fatemeh F. Department of Chemistry - Mashhad Branch-Islamic Azad University, Mashhad, Iran , Sillanpaa, Mika Laboratory of Green Chemistry LUT Chemtech - Lappeenranta University of Technology, Mikkeli, Finland
Abstract :
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.
Keywords :
Pyrano-pyrazoles , Green chemistry , Heteropolyacids , Magnetic catalyst , Multicomponent reaction , One-pot reactions , Heterogeneous catalysis , MCRs
