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Issue 24, 2016
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Non-directed, carbonate-mediated C–H activation and aerobic C–H oxygenation with Cp*Ir catalysts

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Abstract

The effect of oxidatively stable L- and X-type additives on the activity of Cp*Ir catalyst precursors in the C–H activation of arenes has been studied. Turnover numbers for C–H activation of up to 65 can thus be achieved, as determined by H/D exchange in MeOH-D4. In particular, carbonate additives are found to enhance the C–H activation reactivity of Cp*Ir(H2O)3(OTf)2 (1) more significantly than L-type ligands investigated in this study. Based on these studies, Cp*Ir/carbonate systems are developed that catalyze the aerobic Csp3–H oxygenation of alkyl arenes, employing air as oxidant.

Graphical abstract: Non-directed, carbonate-mediated C–H activation and aerobic C–H oxygenation with Cp*Ir catalysts

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Publication details

The article was received on 18 jan. 2016, accepted on 04 mar. 2016 and first published on 08 mar. 2016


Article type: Paper
DOI: 10.1039/C6DT00234J
Citation: Dalton Trans., 2016,45, 9942-9947
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    Non-directed, carbonate-mediated C–H activation and aerobic C–H oxygenation with Cp*Ir catalysts

    M. E. Kerr, I. Ahmed, A. Gunay, N. J. Venditto, F. Zhu, E. A. Ison and M. H. Emmert, Dalton Trans., 2016, 45, 9942
    DOI: 10.1039/C6DT00234J

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