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Issue 34, 2016
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Bis(allyl)-ruthenium(IV) complexes with phosphinous acid ligands as catalysts for nitrile hydration reactions

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Abstract

Several mononuclear ruthenium(IV) complexes with phosphinous acid ligands [RuCl233-C10H16)(PR2OH)] have been synthesized (78–86% yield) by treatment of the dimeric precursor [{RuCl(μ-Cl)(η33-C10H16)}2] (C10H16 = 2,7-dimethylocta-2,6-diene-1,8-diyl) with 2 equivalents of different aromatic, heteroaromatic and aliphatic secondary phosphine oxides R2P([double bond, length as m-dash]O)H. The compounds [RuCl233-C10H16)(PR2OH)] could also be prepared, in similar yields, by hydrolysis of the P–Cl bond in the corresponding chlorophosphine–Ru(IV) derivatives [RuCl233-C10H16)(PR2Cl)]. In addition to NMR and IR data, the X-ray crystal structures of representative examples are discussed. Moreover, the catalytic behaviour of complexes [RuCl233-C10H16)(PR2OH)] has been investigated for the selective hydration of organonitriles in water. The best results were achieved with the complex [RuCl233-C10H16)(PMe2OH)], which proved to be active under mild conditions (60 °C), with low metal loadings (1 mol%), and showing good functional group tolerance.

Graphical abstract: Bis(allyl)-ruthenium(iv) complexes with phosphinous acid ligands as catalysts for nitrile hydration reactions

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Publication details

The article was received on 15 Jun 2016, accepted on 01 Aug 2016 and first published on 01 Aug 2016


Article type: Paper
DOI: 10.1039/C6DT02375D
Citation: Dalton Trans., 2016,45, 13590-13603
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    Bis(allyl)-ruthenium(IV) complexes with phosphinous acid ligands as catalysts for nitrile hydration reactions

    E. Tomás-Mendivil, J. Francos, R. González-Fernández, P. J. González-Liste, J. Borge and V. Cadierno, Dalton Trans., 2016, 45, 13590
    DOI: 10.1039/C6DT02375D

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