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Open AccessArticle

Successive Activation of C–H and C–O Bonds of Vinyl Ethers by a Diphosphine and Hydrido-Bridged Diiridium Complex

Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
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Inorganics 2019, 7(10), 121; https://doi.org/10.3390/inorganics7100121
Received: 21 August 2019 / Revised: 20 September 2019 / Accepted: 20 September 2019 / Published: 3 October 2019
(This article belongs to the Special Issue Iridium Complexes)
The reaction of [(Cp*Ir)2(μ-dmpm)(μ-H)][OTf] (2) [Cp* = η5-C5Me5, dmpm = bis(dimethylphosphino)methane] with 2,3-dihydrofuran gives [(Cp*IrH)2(μ-dmpm){μ-(2,3-dihydrofuranyl)}][OTf] (3) in an isolated yield of 70% via the C–H bond activation at the 5-position of 2,3-dihydrofuran. Complex 3 is slowly converted into [(Cp*Ir)2(μ-dmpm)(μ-C=C(H)CH2CH2OH)][OTf] (4) quantitatively via the proton-mediated C–O bond activation. The reaction of 2 with ethyl vinyl ether gives [(Cp*Ir)2(μ-dmpm)(μ-CH=CH2)][OTf] (5) in the isolated yield of 64% via the successive activation of C–H and C–O bonds.
Keywords: iridium complex; multinuclear complex; C–H activation; C–O cleavage; vinyl ether iridium complex; multinuclear complex; C–H activation; C–O cleavage; vinyl ether
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Takahashi, Y.; Shimbayashi, T.; Fujita, K.-I. Successive Activation of C–H and C–O Bonds of Vinyl Ethers by a Diphosphine and Hydrido-Bridged Diiridium Complex. Inorganics 2019, 7, 121.

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