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Iranian Journal of Chemistry and Chemical Engineering، جلد ۴۳، شماره ۸، صفحات ۲۹۰۰-۲۹۱۱
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عنوان انگلیسی Graphene Oxide Substituted Diethylenetriamine and Silica Nanocomposite as a Novel, Efficient and Sustainable Catalyst for the Synthesis of Pyrimido[2,1-b]Benzothiazoles
چکیده انگلیسی مقاله This work reports the efficient synthesis of Pyrimido[2,1-b]benzothiazoles using a novel diethylenetriamine-functionalized graphene oxide and silica nanocomposite. Graphene oxide was first modified with diethylenetriamine followed by treatment with triethylortosilicate in acetic acid and water to achieve the final nanocomposite. The nanocomposite w:as char:acterized by FT-IR, XRD, FE-SEM, EDS, and TGA techniques. The synthesis of pyrimido[2,1-b]benzothiazoles proceeded through a one-pot three-component reaction under solvent-free conditions. Optimized conditions for 4-chlorobenzaldehyde derivative involves solvent-free medium, 0.02 g of catalyst at 80 °C for 30 min which resulted in 95% yield. The nanocomposite was found to be environmentally friendly, stable under the reaction conditions, easily recoverable, inexpensive, non-metal, safe handling, and reusable for the synthesis of the pyrimido[2,1-b]benzothiazoles at least five times. The presented procedure and nanocomposite were more sustainable and efficient than the previously published reports.
کلیدواژه‌های انگلیسی مقاله Graphene oxide,silica nanocomposite,sustainable synthesis,Pyrimido [2,1-b]benzothiazoles,multicomponent reaction
نویسندگان مقاله Atefeh Mohammadi |
Department of Chemistry, Payame Noor University, Tehran, I.R. IRAN

Esmael Rostami |
Department of Chemistry, Payame Noor University, Tehran, I.R. IRAN

نشانی اینترنتی https://ijcce.ac.ir/article_717786_2727d302c8ebd1a34cd9d8e9c5ec59e5.pdf
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