Ethyltrioxorhenium – Catalytic application and decomposition pathways

Hofmann, Benjamin J. ORCID:, Huber, Stefan, Reich, Robert M., Drees, Markus and Kühn, Fritz E. (2019) Ethyltrioxorhenium – Catalytic application and decomposition pathways. Journal of Organometallic Chemistry, 885. pp. 32-38. ISSN 0022-328X

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Despite its sensitivity, ethyltrioxorhenium (ETO) is applicable as catalyst in the epoxidation of olefins using either tert-butylhydroperoxide (TBHP) or hydrogen peroxide as oxidants. Conversions of approximately 80% with only epoxide being formed and a turnover frequency (TOF) of up to 1200 h−1 can be achieved with TBHP in 1,1,1,3,3,3-hexafluroroisopropanol (HFI). As proven for its more stable congener MTO, the active species is highly likely an alkyl peroxo species, as shown by 17O-NMR experiments. Experimental and theoretical studies on the decomposition mechanism of ETO in diluted polar solvents reveal that the degradation pathway proceeds equally via β-hydrogen elimination and radical decomposition.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
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Depositing User: LivePure Connector
Date Deposited: 17 Jul 2021 00:12
Last Modified: 23 Oct 2022 02:42
DOI: 10.1016/j.jorganchem.2019.02.004

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