Synthesis of 4H-Pyrimido[2,1-b]benzothiazoles Derivatives in the Presence of Nano-Fe3O4@walnut Shell/B(III) as a Novel Natural-based Magnetic Nanocatalyst
نویسندگان
1 Department of Chemistry, College of Science, Yazd University, Yazd, P.O. Box 89195-741, I.R. Iran
2 Department of Chemistry, College of Science, Yazd University, Yazd, P.O. Box 89195-741, I.R. Iran
3 Department of Chemistry, College of Science, Yazd University, Yazd, P.O. Box 89195-741, I.R. Iran
4 Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I.R. Iran
doi
10.22036/org.chem.2025.514381.1389چکیده
In this work, nano-Fe3O4@walnut shell/B(III) as a bio-based magnetic nano-catalyst was prepared and then characterized by FT-IR, EDS-MAPPING, TGA, FESEM, and XRD. This catalyst was used for synthesis of 4H-Pyrimido[2,1-b]benzothiazoles via three-component, one-pot condensation reaction of aldehydes, ethyl acetoacetate and 2-aminobenzothiazole under solvent-free condition at 85 °C a purity in short reaction times, excellent yields, reusability catalyst and an easy separation using an external magnet are attractive features of this process.
