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Issue 20, 2013
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Wingtip substituents tailor the catalytic activity of ruthenium triazolylidene complexes in base-free alcohol oxidation

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Abstract

A series of RuII6-arene) complexes with 1,2,3-triazolylidene ligands comprising different aryl and alkyl wingtip groups have been prepared and characterized by NMR spectroscopy, microanalysis, and in one case by X-ray diffraction. All complexes are active catalyst precursors for the oxidation of alcohols to the corresponding aldehydes/ketones without the need of an oxidant or base as additive. The wingtip groups have a direct impact on the catalytic activity, alkyl wingtips providing the most active species while aryl wingtip groups induce lower activity. An N-bound phenyl group was the most inhibiting wingtip group due to cyclometalation. Arene dissociation was observed as a potential catalyst deactivation pathway.

Graphical abstract: Wingtip substituents tailor the catalytic activity of ruthenium triazolylidene complexes in base-free alcohol oxidation

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Publication details

The article was received on 07 Dec 2012, accepted on 17 Jan 2013 and first published on 18 Jan 2013


Article type: Paper
DOI: 10.1039/C3DT32939A
Citation: Dalton Trans., 2013,42, 7424-7432
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    Wingtip substituents tailor the catalytic activity of ruthenium triazolylidene complexes in base-free alcohol oxidation

    D. Canseco-Gonzalez and M. Albrecht, Dalton Trans., 2013, 42, 7424
    DOI: 10.1039/C3DT32939A

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