Preparation and characterization of nano guar gum/BF <sub>3</sub> /Fe <sub>3</sub> O <sub>4</sub> as a novel bio-based Lewis acid catalyst for the one-pot green synthesis of pyrimido benzothiazoles under solvent-free conditions
Nano guar gum/BF<sub>3</sub>/Fe<sub>3</sub>O<sub>4</sub> is a bio-based nanocatalyst that was prepared, characterized and applied in one-pot three-component reactions of various aldehydes, 2-aminobenzothiazole and ethyl acetoacetate for the synthesis of 4<i>H</i>-pyrimido[2,1-<i>b</i>]benzothiazole derivatives at 80 °C under solvent-free conditions. The structure and properties of the heterogeneous bifunctional Lewis acid-base catalyst were studied <i>via</i> FT-IR, FESEM, TGA, EDS-MAP, XRD, VSM, and BET. Some unique characteristics of the magnetic nanocatalysts enabled the development of the catalytic activity using a simple, efficient, green and eco-friendly protocol. The catalyst was reused several times without a loss of activity.
Authors
- Abdolhamid Bamoniri (ORCID: https://orcid.org/0000-0002-8911-2433)
- Motahare Hajihasani Bafghi
Institutions
- University of Kashan (IR)
- Yazd University (IR)
Publication Details
- Journal
- Nanoscale Advances
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5na00201j
- Primary Topic
- Multicomponent Synthesis of Heterocycles
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Yazd University
- University of Kashan