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Cross-Linked Chitosan/Multi-Walled Carbon Nanotubes Composite as Ecofriendly Biocatalyst for Synthesis of Some Novel Benzil Bis-Thiazoles

Aminohydrazide cross-linked chitosan (CLCS) and its MWCNTs (CLCS/MWCNTs) were formulated and utilized as a potent ecofriendly basic heterogeneous biocatalyst under ultrasonic irradiation for synthesis of two novel series of benzil bis-aryldiazenylthiazoles and benzil bis-arylhydrazonothiazolones fro...

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Autores principales: Alshabanah, Latifah A., Gomha, Sobhi M., Al-Mutabagani, Laila A., Abolibda, Tariq Z., El-Ghany, Nahed A. Abd, El-Enany, Waleed A. M. A., El-Ziaty, Ahmed K., Ali, Rania S., Mohamed, Nadia A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198799/
https://www.ncbi.nlm.nih.gov/pubmed/34070526
http://dx.doi.org/10.3390/polym13111728
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author Alshabanah, Latifah A.
Gomha, Sobhi M.
Al-Mutabagani, Laila A.
Abolibda, Tariq Z.
El-Ghany, Nahed A. Abd
El-Enany, Waleed A. M. A.
El-Ziaty, Ahmed K.
Ali, Rania S.
Mohamed, Nadia A.
author_facet Alshabanah, Latifah A.
Gomha, Sobhi M.
Al-Mutabagani, Laila A.
Abolibda, Tariq Z.
El-Ghany, Nahed A. Abd
El-Enany, Waleed A. M. A.
El-Ziaty, Ahmed K.
Ali, Rania S.
Mohamed, Nadia A.
author_sort Alshabanah, Latifah A.
collection PubMed
description Aminohydrazide cross-linked chitosan (CLCS) and its MWCNTs (CLCS/MWCNTs) were formulated and utilized as a potent ecofriendly basic heterogeneous biocatalyst under ultrasonic irradiation for synthesis of two novel series of benzil bis-aryldiazenylthiazoles and benzil bis-arylhydrazonothiazolones from the reaction of benzil bis-thiosemicarbazone with 2-oxo-N′-arylpropanehydrazonoyl chlorides and ethyl 2-chloro-2-(2-phenylhydrazono) acetates, respectively. The chemical structures of the newly synthesized derivatives were elucidated by spectral data and alternative methods, where available. Additionally, their yield % was estimated using a traditional catalyst as TEA and green recyclable catalysts as CLCS and CLCS/MWCNTs composite in a comparative study. We observed that, under the same reaction conditions, the yield % of the desired products increased by changing TEA to CLCS then to CLCS/MWCNT from 72–78% to 79–83% to 84–87%, respectively. The thermal stability of the investigated samples could be arranged as CLCS/MWCNTs composite > CLCS > chitosan, where the weight losses of chitosan, CLCS and CLCS/MWCNTs composite at 500 °C were 65.46%, 57.95% and 53.29%, respectively.
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spelling pubmed-81987992021-06-14 Cross-Linked Chitosan/Multi-Walled Carbon Nanotubes Composite as Ecofriendly Biocatalyst for Synthesis of Some Novel Benzil Bis-Thiazoles Alshabanah, Latifah A. Gomha, Sobhi M. Al-Mutabagani, Laila A. Abolibda, Tariq Z. El-Ghany, Nahed A. Abd El-Enany, Waleed A. M. A. El-Ziaty, Ahmed K. Ali, Rania S. Mohamed, Nadia A. Polymers (Basel) Article Aminohydrazide cross-linked chitosan (CLCS) and its MWCNTs (CLCS/MWCNTs) were formulated and utilized as a potent ecofriendly basic heterogeneous biocatalyst under ultrasonic irradiation for synthesis of two novel series of benzil bis-aryldiazenylthiazoles and benzil bis-arylhydrazonothiazolones from the reaction of benzil bis-thiosemicarbazone with 2-oxo-N′-arylpropanehydrazonoyl chlorides and ethyl 2-chloro-2-(2-phenylhydrazono) acetates, respectively. The chemical structures of the newly synthesized derivatives were elucidated by spectral data and alternative methods, where available. Additionally, their yield % was estimated using a traditional catalyst as TEA and green recyclable catalysts as CLCS and CLCS/MWCNTs composite in a comparative study. We observed that, under the same reaction conditions, the yield % of the desired products increased by changing TEA to CLCS then to CLCS/MWCNT from 72–78% to 79–83% to 84–87%, respectively. The thermal stability of the investigated samples could be arranged as CLCS/MWCNTs composite > CLCS > chitosan, where the weight losses of chitosan, CLCS and CLCS/MWCNTs composite at 500 °C were 65.46%, 57.95% and 53.29%, respectively. MDPI 2021-05-25 /pmc/articles/PMC8198799/ /pubmed/34070526 http://dx.doi.org/10.3390/polym13111728 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Alshabanah, Latifah A.
Gomha, Sobhi M.
Al-Mutabagani, Laila A.
Abolibda, Tariq Z.
El-Ghany, Nahed A. Abd
El-Enany, Waleed A. M. A.
El-Ziaty, Ahmed K.
Ali, Rania S.
Mohamed, Nadia A.
Cross-Linked Chitosan/Multi-Walled Carbon Nanotubes Composite as Ecofriendly Biocatalyst for Synthesis of Some Novel Benzil Bis-Thiazoles
title Cross-Linked Chitosan/Multi-Walled Carbon Nanotubes Composite as Ecofriendly Biocatalyst for Synthesis of Some Novel Benzil Bis-Thiazoles
title_full Cross-Linked Chitosan/Multi-Walled Carbon Nanotubes Composite as Ecofriendly Biocatalyst for Synthesis of Some Novel Benzil Bis-Thiazoles
title_fullStr Cross-Linked Chitosan/Multi-Walled Carbon Nanotubes Composite as Ecofriendly Biocatalyst for Synthesis of Some Novel Benzil Bis-Thiazoles
title_full_unstemmed Cross-Linked Chitosan/Multi-Walled Carbon Nanotubes Composite as Ecofriendly Biocatalyst for Synthesis of Some Novel Benzil Bis-Thiazoles
title_short Cross-Linked Chitosan/Multi-Walled Carbon Nanotubes Composite as Ecofriendly Biocatalyst for Synthesis of Some Novel Benzil Bis-Thiazoles
title_sort cross-linked chitosan/multi-walled carbon nanotubes composite as ecofriendly biocatalyst for synthesis of some novel benzil bis-thiazoles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198799/
https://www.ncbi.nlm.nih.gov/pubmed/34070526
http://dx.doi.org/10.3390/polym13111728
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