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Cu(I)@Fe 3 O 4 nanoparticles supported on imidazolium‐based ionic liquid‐grafted cellulose: Green and efficient nanocatalyst for multicomponent synthesis of N ‐sulfonylamidines and N ‐sulfonylacrylamidines
Author(s) -
Shojaei Salman,
Ghasemi Zarrin,
Shahrisa Aziz
Publication year - 2017
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3788
Subject(s) - ionic liquid , chemistry , thermogravimetric analysis , sulfonyl , cellulose , catalysis , fourier transform infrared spectroscopy , green chemistry , nanoparticle , iodide , chemical engineering , inorganic chemistry , organic chemistry , alkyl , engineering
A novel heterogeneous nanocatalyst was fabricated by depositing copper iodide and Fe 3 O 4 nanoparticles on imidazolium‐based ionic liquid‐grafted cellulose and successfully characterized using Fourier transform infrared spectroscopy, thermogravimetric analysis, powder X‐ray diffraction, scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, vibrating sample magnetometry and flame atomic absorption spectrometry. It was employed to catalyse the reaction of terminal acetylenes with sulfonyl azides to afford highly reactive sulfonyl ketenimine intermediates which were subsequently trapped by secondary amines to give N ‐sulfonylamidines and N ‐sulfonylacrylamidines under solvent‐free conditions at room temperature. Good to excellent yields, very short reaction times, eco‐friendly processing, easy separation and reusability without significant loss of catalytic activity were found to be the notable features of this synthetic protocol.