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Issue 31, 2013
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A detailed kinetic analysis of rhodium-catalyzed alkyne hydrogenation

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Abstract

Continuous monitoring using electrospray ionisation mass spectrometry (ESI-MS) shows that Wilkinson's catalyst hydrogenates a charge-tagged alkyne to the corresponding alkene, and at only a marginally slower rate, to the alkane. No rhodium-containing intermediates were observed during the reaction, consistent with the established mechanism which points at the initial dissociation of triphenylphosphine from Rh(PPh3)3Cl as being the key step in the reaction. A numerical model was constructed that the closely matched the experimental data, and correctly predicted the response of the reaction to the addition of excess PPh3.

Graphical abstract: A detailed kinetic analysis of rhodium-catalyzed alkyne hydrogenation

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Publication details

The article was received on 08 May 2013, accepted on 18 Jun 2013 and first published on 20 Jun 2013


Article type: Paper
DOI: 10.1039/C3DT51212F
Citation: Dalton Trans., 2013,42, 11312-11318
  • Open access: Creative Commons BY license
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    A detailed kinetic analysis of rhodium-catalyzed alkyne hydrogenation

    J. Luo, A. G. Oliver and J. Scott McIndoe, Dalton Trans., 2013, 42, 11312
    DOI: 10.1039/C3DT51212F

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