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Reaction pathways and redox states in α-selective cobalt-catalyzed hydroborations of alkynes

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Cobalt(II) alkyl complexes supported by a monoanionic NNN pincer ligand are pre-catalysts for the regioselective hydroboration of terminal alkynes, yielding the Markovnikov products with α:β-(E) ratios of up to 97:3. A cobalt(II) hydride and a cobalt(II) vinyl complex appear to determine the main re...

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Hauptverfasser: Blasius, Clemens K. (VerfasserIn) , Vasilenko, Vladislav (VerfasserIn) , Matveeva, Regina (VerfasserIn) , Wadepohl, Hubert (VerfasserIn) , Gade, Lutz H. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2020
In: Angewandte Chemie
Year: 2020, Jahrgang: 59, Heft: 51, Pages: 23210-23214
ISSN:1521-3757
DOI:10.1002/ange.202009625
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1002/ange.202009625
Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/10.1002/ange.202009625
Volltext
Verfasserangaben:Clemens K. Blasius, Vladislav Vasilenko, Regina Matveeva, Hubert Wadepohl, and Lutz H. Gade
Beschreibung
Zusammenfassung:Cobalt(II) alkyl complexes supported by a monoanionic NNN pincer ligand are pre-catalysts for the regioselective hydroboration of terminal alkynes, yielding the Markovnikov products with α:β-(E) ratios of up to 97:3. A cobalt(II) hydride and a cobalt(II) vinyl complex appear to determine the main reaction pathway. In a background reaction the highly reactive hydrido species specifically converts to a coordinatively unsaturated cobalt(I) complex which was found to re-enter the main catalytic cycle.
Beschreibung:Version of record online: 15 October 2020
Gesehen am 25.10.2021
Beschreibung:Online Resource
ISSN:1521-3757
DOI:10.1002/ange.202009625

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