Superparamagnetic nanoparticles as a recyclable heterogeneous catalyst for the direct synthesis of carbamates containing biothiazole moiety

Nguyen Kim Chung * , Le Thanh Dung , Phan Thanh Son Nam , Tran Nhut Kien and Dang Huynh Giao

* Corresponding authorNguyen Kim Chung

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Received: 25 Nov 2017
Revised: 20 Dec 2017
Accepted: 20 Jul 2018
Published: 31 Jul 2018
DOI: 10.22144/ctu.jen.2018.024
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Nguyen, K. C., Le, T. D., Phan, T. S. N., Tran, N. K., & Dang, H. G. (2018). Superparamagnetic nanoparticles as a recyclable heterogeneous catalyst for the direct synthesis of carbamates containing biothiazole moiety. CTU Journal of Innovation and Sustainable Development , 54(09), 52-58. https://doi.org/10.22144/ctu.jen.2018.024
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No. 09 (2018)

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Abstract

Superparamagnetic copper ferrite nanoparticles were utilized as a recyclable heterogeneous catalyst for the cross-dehydrogenative coupling of N,N-disubstituted formamides with phenols. This routine allowed the creation of a hybrid benzothiazole-carbamate moiety under heterogeneous catalysis. These products possess both carbamate and benzothiazole moieties, thus taking profits from both structures with regard to pharmaceutical  and biological and activities.  Employing a catalytic portion of thesuperparamagneticnanoparticles, hybrid benzothiazole-carbamate structures could be produced with reasonable yields within 2 h. It was  possible to recover the nanoparticles by simple magnetic separation, and reutilize them for the reaction without a significant decline in catalytic efficiency. 
Keywords: Carbamates, formamides, nanocatalysis, nanoparticles, phenols

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