From small molecules to polymeric catalysts in the oscillatory carbonylation reaction: multiple effects of adding HI.
From small molecules to polymeric catalysts in the oscillatory carbonylation reaction: multiple effects of adding HI.
复制标题
振荡羰基化反应中从小分子到聚合物催化剂:添加 HI 的多重效应。
DOI:
10.1039/c7cp07747e
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Isakova A
中科院分区:
文献类型:
--
作者:
Isakova A
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.
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DOI:
--
发表时间:
2007
期刊:
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DOI:
--
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1989
期刊:
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通讯作者:
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作者:
Parker, Julie;Novakovic, Katarina
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