Journal
RSC ADVANCES
Volume 11, Issue 31, Pages 19121-19127Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ra02347k
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- University of Birjand Research Council
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This study developed a direct imination reaction by tandem reaction of alcohols and nitro compounds using Cu-isatin Schiff base-gamma-Fe2O3 as a nanomagnetically recyclable catalyst under solvent-free conditions. The method allows various imines to be prepared in good yields from one-pot reaction of different alcohols and nitro compounds, with the advantages of using an inexpensive and easily reusable catalyst, without requiring additives or excess amounts of benzyl alcohol as the reaction solvent.
A direct imination reaction was developed by tandem reaction of alcohols and nitro compounds in the presence of Cu-isatin Schiff base-gamma-Fe2O3 as a nanomagnetically recyclable catalyst under solvent-free conditions. By this method, various imines were prepared in good to high yields from one-pot reaction of various alcohols (primary aromatic and aliphatic) and nitro compounds (aromatic and aliphatic) via an auto-hydrogen transfer reaction. Use of an inexpensive and easily reusable catalyst, without requiring any additives or excess amounts of benzyl alcohol as the reaction solvent are the other advantages of this method. This catalytic system has the merits of cost effectiveness, environmental benignity, excellent recyclability and good reproducibility.
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