Cargando…
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...
Autores principales: | , , , , , , , , |
---|---|
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 |
_version_ | 1783707224808357888 |
---|---|
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. |
format | Online Article Text |
id | pubmed-8198799 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT alshabanahlatifaha crosslinkedchitosanmultiwalledcarbonnanotubescompositeasecofriendlybiocatalystforsynthesisofsomenovelbenzilbisthiazoles AT gomhasobhim crosslinkedchitosanmultiwalledcarbonnanotubescompositeasecofriendlybiocatalystforsynthesisofsomenovelbenzilbisthiazoles AT almutabaganilailaa crosslinkedchitosanmultiwalledcarbonnanotubescompositeasecofriendlybiocatalystforsynthesisofsomenovelbenzilbisthiazoles AT abolibdatariqz crosslinkedchitosanmultiwalledcarbonnanotubescompositeasecofriendlybiocatalystforsynthesisofsomenovelbenzilbisthiazoles AT elghanynahedaabd crosslinkedchitosanmultiwalledcarbonnanotubescompositeasecofriendlybiocatalystforsynthesisofsomenovelbenzilbisthiazoles AT elenanywaleedama crosslinkedchitosanmultiwalledcarbonnanotubescompositeasecofriendlybiocatalystforsynthesisofsomenovelbenzilbisthiazoles AT elziatyahmedk crosslinkedchitosanmultiwalledcarbonnanotubescompositeasecofriendlybiocatalystforsynthesisofsomenovelbenzilbisthiazoles AT aliranias crosslinkedchitosanmultiwalledcarbonnanotubescompositeasecofriendlybiocatalystforsynthesisofsomenovelbenzilbisthiazoles AT mohamednadiaa crosslinkedchitosanmultiwalledcarbonnanotubescompositeasecofriendlybiocatalystforsynthesisofsomenovelbenzilbisthiazoles |