TY - EJOUR
AU - Farrokhi, Azita
AU - Yavari, Issa
AU - Ghodrati, Keivan
PY - 2024
DA - February
TI - Fe3O4/SiO2/(CH2)3N+Me3Br3– core–shell nanoparticles: An efficient catalyst for the synthesis of functionalized 5-oxo-hexahydroquinolines
T2 - Iranian Journal of Catalysis
VL - 8
L1 - https://oiccpress.com/iranian-journal-of-catalysis/article/fe3o4-sio2-ch23nme3br3-core-shell-nanoparticles-an-efficient-catalyst-for-the-synthesis-of-functionalized-5-oxo-hexahydroquinolines/
N2 - The four-component Hantzsch condensation reaction of dimedone, ethyl acetoacetate, ammonium acetate, and various aromatic and aliphatic aldehydes in the presence of catalytic amount of a magnetic nanoparticle-supported tribromide, as a green catalyst, under solvent‐free conditions at 80 °C affords functionalized 5-oxo-hexahydroquinolines in good to excellent yields. The magnetic Fe3O4-SiO2-(CH2)3N+Me3Br3–, was characterized by infrared spectroscopy (FT-IR), X-ray diffraction (XRD) spectroscopy, transmission electron microscope (TEM) and vibrating sample magnetometer (VSM). The method offers several advantages including high yields, short reaction time, simple work-up procedure and catalyst reusability for several runs. The catalyst could be readily separated by using a magnetic force and reused six times without any significant loss of catalytic activity.
IS - 1
PB - OICC Press
KW - Nanohybrid, Hantzsch condensation, 5-Oxo-hexahydroquinolines. Solvent-free, Heterogeneous catalysis, Magnetically retrievable 
EN -