From small molecules to polymeric catalysts in the oscillatory carbonylation reaction: Multiple effects of adding HI

Isakova, A, Murdoch, B and Novakovic, K 2018, 'From small molecules to polymeric catalysts in the oscillatory carbonylation reaction: Multiple effects of adding HI', Physical Chemistry Chemical Physics, vol. 20, no. 14, pp. 9281-9288.


Document type: Journal Article
Collection: Journal Articles

Title From small molecules to polymeric catalysts in the oscillatory carbonylation reaction: Multiple effects of adding HI
Author(s) Isakova, A
Murdoch, B
Novakovic, K
Year 2018
Journal name Physical Chemistry Chemical Physics
Volume number 20
Issue number 14
Start page 9281
End page 9288
Total pages 8
Publisher Royal Society of Chemistry
Abstract The oscillatory palladium-catalysed carbonylation reaction opens new horizons for applications in smart materials due to the versatility of its conditions and substrates, as well as the adjustability of amplitude and period of pH oscillations. A variety of viable substrates have been demonstrated, including polymeric alkyne-terminated substrates. However, so far, there have not been any reports of polymer-based palladium catalysts in oscillatory mode. In this paper, we demonstrate pH oscillations in various systems, using commercially available palladium acetate, a triphenylphosphine palladium acetate complex and a polymer-bound palladium catalyst. While palladium acetate was able to generate oscillations under the conditions already established in our previous research on PdI2-catalysed oscillators, the other two catalysts needed the addition of HI to induce oscillations. HI forced an initial pH drop, bringing pH into the range where oscillations generally occur. Addition of HI had a significant effect on all catalysts, modifying the amplitude and period of oscillations, oscillation mode, as well as starting material conversion and product distribution.
Subject Catalysis and Mechanisms of Reactions
DOI - identifier 10.1039/c7cp07747e
Copyright notice © the Owner Societies 2018.
ISSN 1463-9076
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