Silicon Catalyzed C−O Bond Ring Closing Metathesis of Polyethers
Abstract: The Lewis superacid bis (perchlorocatecholato) silane catalyzes C−O bond metathesis of alkyl ethers with an efficiency outperforming all earlier reported systems. Chemoselective ring contractions of macrocyclic crown ethers enable substrate‐specific transformations, and an unprecedented ring‐closing metathesis of polyethylene glycols allows polymer‐selective degradation. Quantum chemical computations scrutinize a high Lewis acidity paired with a simultaneous low propensity for polydentate substrate binding as critical for successful catalysis. Based on these mechanistic insights, a second‐generation class of silicon Lewis superacid with enhanced efficacy is identified and demonstrated.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Silicon Catalyzed C−O Bond Ring Closing Metathesis of Polyethers ; day:05 ; month:10 ; year:2022 ; extent:1
Angewandte Chemie / International edition. International edition ; (05.10.2022) (gesamt 1)
- DOI
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10.1002/anie.202210132
- URN
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urn:nbn:de:101:1-2022100615120161013764
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
- 15.08.2025, 07:35 MESZ
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