One-pot synthesis of substituted 4$H$-chromenes by nickel ferrite nanoparticles as an efficient and magnetically reusable catalyst

Authors : Hamideh AHANKAR, Ali RAMAZANI, Katararzyna SLEPOKURA, Tadeusz LIS, Sang Woo JOO

Pages : 719-734

View : 16 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Nickel ferrite magnetic nanoparticles insert ignore into journalissuearticles values(NiFe$_{2}$O$_{4}$ MNPs); were prepared via the autocombustion assisted sol-gel method. The efficient catalyst was investigated by FT-IR, XRD, ICP, SEM, and TEM techniques. A one-pot, three-component reaction is reported for the synthesis of substituted 4$H$-chromenes in the presence of NiFe$_{2}$O$_{4}$ MNPs as a reusable catalyst in a green solvent at 40 $^{\circ}$C under clean, efficient, and mild conditions. Furthermore, selected products were characterized by FT-IR, $^{1}$H NMR, and $^{13}$C NMR. The single-crystal X-ray analysis of product 4u was also conclusively confirmed. Easy workup procedure, high purity of products via simple recrystallization, and environmentally benign conditions are the outstanding benefits of this method.
Keywords : Nickel ferrite, magnetic nanoparticles, multicomponent reactions, 4 H chromenes, green methodology