Issue 3, 2019, Issue in Progress

Fe3O4@nano-cellulose/Cu(ii): a bio-based and magnetically recoverable nano-catalyst for the synthesis of 4H-pyrimido[2,1-b]benzothiazole derivatives

Abstract

Fe3O4@nano-cellulose/Cu(II) as a green bio-based magnetic catalyst was prepared through in situ co-precipitation of Fe2+ and Fe3+ ions in an aqueous suspension of nano-cellulose. The mentioned magnetically heterogeneous catalyst was characterized by FT-IR, XRD, VSM, FESEM, TEM, XRF, EDS and TGA. In this research, the synthesis of 4H-pyrimido[2,1-b]benzothiazole derivatives was developed via a three component reaction of aromatic aldehyde, 2-aminobenzothiazole and ethyl acetoacetate using Fe3O4@nano-cellulose/Cu(II) under solvent-free condition at 80 °C. Some advantages of this protocol are good yields, environmentally benign, easy work-up and moderate reusability of the catalyst. The product structures were confirmed by FT-IR, 1H NMR, and 13C NMR spectra.

Graphical abstract: Fe3O4@nano-cellulose/Cu(ii): a bio-based and magnetically recoverable nano-catalyst for the synthesis of 4H-pyrimido[2,1-b]benzothiazole derivatives

Supplementary files

Article information

Article type
Paper
Submitted
07 Nov 2018
Accepted
13 Dec 2018
First published
11 Jan 2019
This article is Open Access
Creative Commons BY license

RSC Adv., 2019,9, 1278-1283

Fe3O4@nano-cellulose/Cu(II): a bio-based and magnetically recoverable nano-catalyst for the synthesis of 4H-pyrimido[2,1-b]benzothiazole derivatives

N. Safajoo, B. B. F. Mirjalili and A. Bamoniri, RSC Adv., 2019, 9, 1278 DOI: 10.1039/C8RA09203F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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