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Acid and base catalysed reactions in one pot with site-isolated polyHIPE catalysts

The polyHIPE catalysts based on styrene, vinyl benzyl chloride, and divinylbenzene co-polymerisation were functionalised with carboxylic and tertiary amine groups. Catalyst characterisation showed covalent bonding of the graft polymers. The macroporous and highly interconnected structure of polyHIPE...

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Detalles Bibliográficos
Autores principales: Yavuz, Erdem, Cherkasov, Nikolay, Degirmenci, Volkan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9061830/
https://www.ncbi.nlm.nih.gov/pubmed/35518687
http://dx.doi.org/10.1039/c9ra01053j
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author Yavuz, Erdem
Cherkasov, Nikolay
Degirmenci, Volkan
author_facet Yavuz, Erdem
Cherkasov, Nikolay
Degirmenci, Volkan
author_sort Yavuz, Erdem
collection PubMed
description The polyHIPE catalysts based on styrene, vinyl benzyl chloride, and divinylbenzene co-polymerisation were functionalised with carboxylic and tertiary amine groups. Catalyst characterisation showed covalent bonding of the graft polymers. The macroporous and highly interconnected structure of polyHIPEs allows isolation of the acid and base functional groups and allows the presence of these otherwise incompatible functionalities on the same catalyst. The functionalised polyHIPE catalysts were shown to perform two reactions; (i) acid-catalysed acetal hydrolysis and (ii) base-catalysed Knoevenagel condensation in one-pot with 97% yield. The yield obtained is substantially higher than that observed with the homogeneous or resin polymer type catalysts due to the compartmentalisation of the active sites and improved mass transfer through the open porous polyHIPE structure.
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spelling pubmed-90618302022-05-04 Acid and base catalysed reactions in one pot with site-isolated polyHIPE catalysts Yavuz, Erdem Cherkasov, Nikolay Degirmenci, Volkan RSC Adv Chemistry The polyHIPE catalysts based on styrene, vinyl benzyl chloride, and divinylbenzene co-polymerisation were functionalised with carboxylic and tertiary amine groups. Catalyst characterisation showed covalent bonding of the graft polymers. The macroporous and highly interconnected structure of polyHIPEs allows isolation of the acid and base functional groups and allows the presence of these otherwise incompatible functionalities on the same catalyst. The functionalised polyHIPE catalysts were shown to perform two reactions; (i) acid-catalysed acetal hydrolysis and (ii) base-catalysed Knoevenagel condensation in one-pot with 97% yield. The yield obtained is substantially higher than that observed with the homogeneous or resin polymer type catalysts due to the compartmentalisation of the active sites and improved mass transfer through the open porous polyHIPE structure. The Royal Society of Chemistry 2019-03-12 /pmc/articles/PMC9061830/ /pubmed/35518687 http://dx.doi.org/10.1039/c9ra01053j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Yavuz, Erdem
Cherkasov, Nikolay
Degirmenci, Volkan
Acid and base catalysed reactions in one pot with site-isolated polyHIPE catalysts
title Acid and base catalysed reactions in one pot with site-isolated polyHIPE catalysts
title_full Acid and base catalysed reactions in one pot with site-isolated polyHIPE catalysts
title_fullStr Acid and base catalysed reactions in one pot with site-isolated polyHIPE catalysts
title_full_unstemmed Acid and base catalysed reactions in one pot with site-isolated polyHIPE catalysts
title_short Acid and base catalysed reactions in one pot with site-isolated polyHIPE catalysts
title_sort acid and base catalysed reactions in one pot with site-isolated polyhipe catalysts
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9061830/
https://www.ncbi.nlm.nih.gov/pubmed/35518687
http://dx.doi.org/10.1039/c9ra01053j
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AT cherkasovnikolay acidandbasecatalysedreactionsinonepotwithsiteisolatedpolyhipecatalysts
AT degirmencivolkan acidandbasecatalysedreactionsinonepotwithsiteisolatedpolyhipecatalysts