Cu(II)-Schiff base/SBA-15 as an efficient catalyst for synthesis of chromeno [4′,3′-b]pyrano[6,5-b]quinoline derivatives
Journal: Iranian Chemical Communication (Vol.5, No. 4)Publication Date: 2017-10-01
Authors : Radineh Motamedi; Ghasem Rezanejade Bardajee; Somaye Shakeri;
Page : 442-448
Keywords : Chromeno-pyranoquinolines; coumarin heteroanalougs; malononitrile; Cu(II)-Schiff base/SBA-15;
Abstract
Some chromeno[4′,3′-b]pyrano[6,5-b]quinoline derivatives were synthesized by condensation of 2-amino-4-aryl-3-cyano-5-oxo-4H, 5H -pyrano-[3,2-c] chromenes and 1,3-cyclohexanedione in an environmentally benign and efficient method by Cu(II)-Schiff base/SBA-15 as an environmentally friendly heterogeneous and recyclable catalyst under solvent-free conditions in high yields and rates. These kinds of catalysts are built from mesoporous silica SBA-15 which was covalently anchored with Cu(II) Schiff base complex. The shorter reaction times, good yields, simple work-up procedure and environmentally friendly conditions are the main advantages of this method compared to the last one. The product was identified by its 1H NMR, mass and IR spectra, which were compared to those reported previously.
Other Latest Articles
- Green and efficient synthesis of functionalized 3-amino-2-oxofuranes using trityl chloride
- Green synthesis of nano size CoFe2O4 using Chenopodium album leaf extract for photo degradation of organic pollutants
- Kinetics of photocatalytic degradation of methylene blue by ZnO-bentonite nanocomposite
- One-pot, organocatalytic synthesis of spirooxindoles using citric acid in aqueous media
- Determination of trace amounts of chromium ions in water and food samples using ligand-less solid phase extraction-based modified nano-boehmite(AlOOH)
Last modified: 2019-06-26 14:21:43