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

Erdem Yavuz, Nikolay Cherkasov, Volkan Degirmenci*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)8175-8183
Number of pages9
JournalRSC Advances
Volume9
Issue number15
DOIs
Publication statusPublished - 2019

Bibliographical note

Publisher Copyright:
© 2019 The Royal Society of Chemistry.

Funding

EY and VD acknowledge the Scientic and Technological Research Council of Turkey (TUBITAK) for nancial support through International Post-Doctoral Research Fellowship Programme.

FundersFunder number
Scientic and Technological Research Council of Turkey
TUBITAK

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