title: Catalytic activity of (Fe2O3)-MCM-41-nPrNH2 magnetically recoverable nanocatalyst for the synthesis of phenylpyrido[4,3-d]pyrimidins.
abstract: A new series of phenylpyrido[4,3-d]pyrimidin-2-amin derivatives have been synthesised from the reaction of (E)-3,5-bis(benzylidene)-4-piperidones and guanidine carbonate in the presence of (Fe2O3)-MCM-41-nPrNH2 as a magnetically recoverable nanocatalyst under solvent free conditions. This catalyst was highly recyclable (up to 5 times) and was easily recovered from the reaction mixture using an external magnet without loss of activity. The prepared magnetic catalyst is characterized by Fourier transform infrared (FT-IR), X-ray powder diffraction (XRD), and nitrogen physisorption measurements. Also all the structures of title compounds 3a-h were elucidated by comprehensive 1H NMR, 13C NMR, IR and Mass spectra.
authors.affiliation: Department of Chemistry, K. N. Toosi University of Technology, PO Box 15875-4416, Tehran, Iran.
authors.forename: Shahnaz
authors.initials: S
authors.lastname: Rostamizadeh
authors.forename: Nasrin
authors.initials: N
authors.lastname: Shadjou
authors.forename: Elyass
authors.initials: E
authors.lastname: Isapoor
authors.forename: Mohammad
authors.initials: M
authors.lastname: Hasanzadeh
mesh_terms: D002384:Catalysis; D058185:Magnetite Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008422:Materials Testing; D011743:Pyrimidines / Q000138:chemical synthesis*
chemical_list: D058185:Magnetite Nanoparticles; D011743:Pyrimidines; C030986:pyrimidine