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Advanced sol–gel process for efficient heterogeneous ring-closing metathesis

Olefin metathesis, a powerful synthetic method with numerous practical applications, can be improved by developing heterogeneous catalysts that can be recycled. In this study, a single-stage process for the entrapment of ruthenium-based catalysts was developed by the sol–gel process. System effectiv...

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Autores principales: Aharon, Shiran, Meyerstein, Dan, Tzur, Eyal, Shamir, Dror, Albo, Yael, Burg, Ariela
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8206332/
https://www.ncbi.nlm.nih.gov/pubmed/34131206
http://dx.doi.org/10.1038/s41598-021-92043-z
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author Aharon, Shiran
Meyerstein, Dan
Tzur, Eyal
Shamir, Dror
Albo, Yael
Burg, Ariela
author_facet Aharon, Shiran
Meyerstein, Dan
Tzur, Eyal
Shamir, Dror
Albo, Yael
Burg, Ariela
author_sort Aharon, Shiran
collection PubMed
description Olefin metathesis, a powerful synthetic method with numerous practical applications, can be improved by developing heterogeneous catalysts that can be recycled. In this study, a single-stage process for the entrapment of ruthenium-based catalysts was developed by the sol–gel process. System effectiveness was quantified by measuring the conversion of the ring-closing metathesis reaction of the substrate diethyl diallylmalonate and the leakage of the catalysts from the matrix. The results indicate that the nature of the precursor affects pore size and catalyst activity. Moreover, matrices prepared with tetraethoxysilane at an alkaline pH exhibit a better reaction rate than in the homogenous system under certain reaction conditions. To the best of our knowledge, this is the first study to present a one-step process that is simpler and faster than the methods reported in the literature for catalyst entrapment by the sol–gel process under standard conditions.
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spelling pubmed-82063322021-06-16 Advanced sol–gel process for efficient heterogeneous ring-closing metathesis Aharon, Shiran Meyerstein, Dan Tzur, Eyal Shamir, Dror Albo, Yael Burg, Ariela Sci Rep Article Olefin metathesis, a powerful synthetic method with numerous practical applications, can be improved by developing heterogeneous catalysts that can be recycled. In this study, a single-stage process for the entrapment of ruthenium-based catalysts was developed by the sol–gel process. System effectiveness was quantified by measuring the conversion of the ring-closing metathesis reaction of the substrate diethyl diallylmalonate and the leakage of the catalysts from the matrix. The results indicate that the nature of the precursor affects pore size and catalyst activity. Moreover, matrices prepared with tetraethoxysilane at an alkaline pH exhibit a better reaction rate than in the homogenous system under certain reaction conditions. To the best of our knowledge, this is the first study to present a one-step process that is simpler and faster than the methods reported in the literature for catalyst entrapment by the sol–gel process under standard conditions. Nature Publishing Group UK 2021-06-15 /pmc/articles/PMC8206332/ /pubmed/34131206 http://dx.doi.org/10.1038/s41598-021-92043-z Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Aharon, Shiran
Meyerstein, Dan
Tzur, Eyal
Shamir, Dror
Albo, Yael
Burg, Ariela
Advanced sol–gel process for efficient heterogeneous ring-closing metathesis
title Advanced sol–gel process for efficient heterogeneous ring-closing metathesis
title_full Advanced sol–gel process for efficient heterogeneous ring-closing metathesis
title_fullStr Advanced sol–gel process for efficient heterogeneous ring-closing metathesis
title_full_unstemmed Advanced sol–gel process for efficient heterogeneous ring-closing metathesis
title_short Advanced sol–gel process for efficient heterogeneous ring-closing metathesis
title_sort advanced sol–gel process for efficient heterogeneous ring-closing metathesis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8206332/
https://www.ncbi.nlm.nih.gov/pubmed/34131206
http://dx.doi.org/10.1038/s41598-021-92043-z
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