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Nano‐Fe 3 O 4 @SiO 2 ‐SO 3 H: A magnetic, reusable solid‐acid catalyst for solvent‐free reduction of oximes to amines with the NaBH 3 CN/ZrCl 4 system
Author(s) -
Sadighnia Leila,
Zeynizadeh Behzad,
Karami Shiva,
Abdollahi Mohammad
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.201800030
Subject(s) - chemistry , sulfonic acid , catalysis , nanocomposite , scanning electron microscope , fourier transform infrared spectroscopy , infrared spectroscopy , magnetite , nuclear chemistry , spectroscopy , transmission electron microscopy , solvent , nano , inorganic chemistry , analytical chemistry (journal) , polymer chemistry , chemical engineering , organic chemistry , nanotechnology , metallurgy , materials science , engineering , physics , quantum mechanics , composite material
In this study, the immobilization of sulfonic acid on silica‐layered magnetite was carried out by the reaction of ClSO 3 H with silica‐layered magnetite. The prepared magnetic nanoparticles of Fe 3 O 4 @SiO 2 ‐SO 3 H were then characterized using scanning electron microscopy, energy dispersive X‐ray spectroscopy, X‐ray diffraction, Fourier transform infrared spectroscopy, vibrating sample magnetometry, and transmission electron microscopy. The sulfonated nanocomposite exhibited excellent catalytic activity and reusability in the reduction of various aldoximes and ketoximes with NaBH 3 CN in the presence of ZrCl 4 . All reactions were carried out under solvent‐free conditions (r.t. or 75–80°C) within 3–70 min to afford amines in high to excellent yields.