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Chitosan-MgO Nanocomposite: One Pot Preparation and Its Utility as an Ecofriendly Biocatalyst in the Synthesis of Thiazoles and [1,3,4]thiadiazoles

1
Department of Chemistry, Faculty of Science, Taibah University, Al-Madinah Al-Mounawrah 30002, Saudi Arabia
2
Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
3
Department of Chemistry, Faculty of Science, Taibah University, Yanbu 46423, Saudi Arabia
*
Author to whom correspondence should be addressed.
Nanomaterials 2018, 8(11), 928; https://doi.org/10.3390/nano8110928
Received: 17 October 2018 / Revised: 3 November 2018 / Accepted: 4 November 2018 / Published: 8 November 2018
(This article belongs to the Special Issue Advances in Heterocatalysis by Nanomaterials)
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Abstract

A chitosan-MgO hybrid nanocomposite was prepared using a simple chemical precipitation method and characterized using Fourier transform spectroscopy (FTIR), elemental analysis (EDX), and scanning electron microscopy (SEM). The nanocomposite was served as a powerful ecofriendly basic catalyst under microwave irradiation in the synthesis of two novel series of 5-arylazo-2-hydrazonothiazoles 4aj and 2-hydrazono[1,3,4]thiadiazoles 8ad, incorporating a sulfonamide group. The structures of the synthesized products were elucidated by spectral data and elemental analyses. Also, their yield percentages were calculated using triethylamine (as a traditional catalyst) and chitosan-MgO nanocomposite (as a green recyclable catalyst) in a comparative study. View Full-Text
Keywords: chitosan-MgO nanocomposite; heterogeneous catalysis; ethylidenethiosemicarbazides; thiazoles; thiadiazoles chitosan-MgO nanocomposite; heterogeneous catalysis; ethylidenethiosemicarbazides; thiazoles; thiadiazoles
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Riyadh, S.M.; Khalil, K.D.; Aljuhani, A. Chitosan-MgO Nanocomposite: One Pot Preparation and Its Utility as an Ecofriendly Biocatalyst in the Synthesis of Thiazoles and [1,3,4]thiadiazoles. Nanomaterials 2018, 8, 928.

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