• Medientyp: E-Artikel
  • Titel: Reaction pathways and redox states in α-selective cobalt-catalyzed hydroborations of alkynes
  • Beteiligte: Blasius, Clemens K. [VerfasserIn]; Vasilenko, Vladislav [VerfasserIn]; Matveeva, Regina [VerfasserIn]; Wadepohl, Hubert [VerfasserIn]; Gade, Lutz H. [VerfasserIn]
  • Erschienen: 2020
  • Erschienen in: Angewandte Chemie. International edition ; 59(2020), 51, Seite 23010-23014
  • Sprache: Englisch
  • DOI: 10.1002/anie.202009625
  • ISSN: 1521-3773
  • Identifikator:
  • Schlagwörter: alkenyl boronates ; alkynes ; cobalt ; pincer ligand ; T-shaped complex
  • Entstehung:
  • Anmerkungen: Version of record online: 15 October 2020
  • Beschreibung: 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.
  • Zugangsstatus: Freier Zugang