Nano-[Fe3O4@SiO2/ N-propyl-1-(thiophen-2-yl)ethanimine][ZnCl2] as a nano magnetite Schiff base complex and heterogeneous catalyst for the synthesis of pyrimido[4,5- b]quinolones

Soheila Esmaili; Ahmad Reza Moosavi-Zare; Ardeshir Khazaei

doi:10.1039/d2ra00213b

Nano-[Fe₃O₄@SiO₂/ N-propyl-1-(thiophen-2-yl)ethanimine][ZnCl₂] as a nano magnetite Schiff base complex and heterogeneous catalyst for the synthesis of pyrimido[4,5- b]quinolones

RSC Adv. 2022 Feb 14;12(9):5386-5394. doi: 10.1039/d2ra00213b. eCollection 2022 Feb 10.

Authors

Soheila Esmaili¹, Ahmad Reza Moosavi-Zare², Ardeshir Khazaei¹

Affiliations

¹ Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University Hamedan 6517838683 Iran Khzaei_1326@yahoo.com.
² Department of Chemical Engineering, Hamedan University of Technology Hamedan 65155 Iran moosavizare@yahoo.com.

Abstract

Nano-[Fe₃O₄@SiO₂/N-propyl-1-(thiophen-2-yl)ethanimine][ZnCl₂] as a nano magnetite Schiff base complex was designed and fully characterized by various analyses such as Fourier transform infrared spectroscopy (FT-IR), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), differential thermal gravimetric analysis (DTA), vibrating sample magnetometry (VSM), scanning electron microscopy (SEM), and transmission electron micrographs (TEM). The presented nano magnetite Schiff base complex was used as a heterogeneous catalyst for the synthesis of pyrimido[4,5-b]quinolones by the reaction of aryl aldehyde, dimedone and 6-amino-1,3-dimethyluracil in EtOH : H₂O (7 : 3) as a solvent at 60 °C.