Title:Synthesized NaA Nanozeolite as a Catalyst for the Preparation of 3-amino
imidazo[1,2-a]pyridines under Solvent-Free Conditions
Volume: 19
Issue: 9
Author(s): Sara Azargashb, Afshin Sarvary*Seyed Karim Hassaninejad-Darzi
Affiliation:
- Department of Chemistry, Faculty of Basic Science, Babol Noshirvani University of Technology, Shariati Ave., Babol,
Post Code: 47148-71167, Iran
Keywords:
NaA nanozeolite, imidazo[1, 2-a]pyridine, 3-component reaction, solvent-free, isocyanide, 2-aminopridines.
Abstract: The present study explores a new method for the fabrication of NaA nanozeolite as a simple
and efficient catalyst for producing 3-aminoimidazo [1,2-a] pyridines via the 3-component reaction of
aldehydes, 2-aminoperidines and isocyanides under solvent-free conditions. The production of the
organic template-free (OTF) NaA nanozeolite was performed at room temperature. The prepared
nanozeolite was identified by X-ray diffraction (XRD), Fourier Transform infrared spectroscopy
(FT-IR), Field Emission Scanning Electronic Microscopy (FESEM), N2 sorption isotherm and Particle
Size Analysis (PSA). The particle sizes of synthesized spherical NaA nanozeolite were under 100 nm
via the FESEM method. BET surface area, total pore volume, and mean pore diameter of the created
sample were attained to be 362 m2g-1, 0.44 cm3 g-1 and 5.9 nm, respectively. The developed method
has some advantages, such as OTF production of NaA nanozeolite, a simple synthesis method with
short reaction time and easy separation using filtration, and the ability to recycle and reuse the catalyst
several times without reducing its efficiency.