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Application of 1‐methyl imidazole‐based ionic liquid‐stabilized silica‐coated Fe 3 O 4 as a novel modified magnetic nanocatalyst for the synthesis of pyrano[2,3‐d]pyrimidines
Author(s) -
Sajjadifar Sami,
Zolfigol Mohammad Ali,
Tami Farzaneh
Publication year - 2019
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201800171
Subject(s) - chemistry , ionic liquid , malononitrile , imidazole , differential scanning calorimetry , barbituric acid , thermogravimetry , fourier transform infrared spectroscopy , catalysis , scanning electron microscope , magnetic nanoparticles , infrared spectroscopy , nuclear chemistry , nanoparticle , inorganic chemistry , organic chemistry , chemical engineering , nanotechnology , materials science , physics , engineering , composite material , thermodynamics
1‐Methyl imidazole‐based ionic liquid‐stabilized silica‐coated Fe 3 O 4 magnetic nanoparticles [Fe 3 O 4 @SiO 2 @(CH 2 ) 3 ‐1‐methyl imidazole]HSO 4 as a solid acid magnetic nanocatalyst was explored in the synthesis of pyrano[2,3‐d]pyrimidine derivatives. Pyrano[2,3‐d]pyrimidine derivatives were synthesized by a highly efficient three‐component reaction of various benzaldehydes, malononitrile, and barbituric acid. The catalyst was characterized by using various analysis techniques such as Fourier transform infrared (FT‐IR) spectroscopy, X‐ray diffraction (XRD), differential scanning calorimetry‐thermogravimetry analysis (DSC‐TGA), scanning electron microscopy (SEM), and vibrating sample magnetometry (VSM).