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- W3003652783 abstract "An olefin metathesis catalyst (8) bearing a hemilabile N-heterocyclic carbene (NHC) ligand with four methoxyethoxy arms was synthesized and analyzed by X-ray crystallography and NMR spectroscopy. The solid-state structure of the catalyst reveals that one of the aromatic rings is rotated toward the plane of the NHC heterocycle, which enables one ortho-O→Ru coordination. Ring-closing metathesis (RCM) activity was tested at low catalyst loadings. Catalyst 8 was found to display a significant rate enhancement relative to the commercial catalyst 3 but offered no improvement in turnover numbers (TON). The solid-state structure of the catalyst’s major degradation product (9) in the presence of 1-hexene reveals a dinuclear compound containing a bridging methylidene (Ru–CH2–Ru), indicating that the methoxyethoxy arms may not be strong enough to stabilize the (NHC)RuCl2(═CH2) catalyst resting state." @default.
- W3003652783 created "2020-02-07" @default.
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- W3003652783 date "2020-01-30" @default.
- W3003652783 modified "2023-09-23" @default.
- W3003652783 title "Olefin Metathesis Catalyst Supported by a Hemilabile NHC Ligand Bearing Polyether Arms: Structure, Activity, and Decomposition" @default.
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- W3003652783 doi "https://doi.org/10.1021/acs.organomet.9b00832" @default.
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