Reaction pathways and redox states in α-selective cobalt-catalyzed hydroborations of alkynes
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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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2020
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| In: |
Angewandte Chemie
Year: 2020, Volume: 59, Issue: 51, Pages: 23210-23214 |
| ISSN: | 1521-3757 |
| DOI: | 10.1002/ange.202009625 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1002/ange.202009625 Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/10.1002/ange.202009625 
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| Author Notes: | Clemens K. Blasius, Vladislav Vasilenko, Regina Matveeva, Hubert Wadepohl, and Lutz H. Gade |
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| 245 | 1 | 0 | |a Reaction pathways and redox states in α-selective cobalt-catalyzed hydroborations of alkynes |c Clemens K. Blasius, Vladislav Vasilenko, Regina Matveeva, Hubert Wadepohl, and Lutz H. Gade |
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| 520 | |a 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. | ||
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| 650 | 4 | |a pincer ligand | |
| 650 | 4 | |a T-shaped complex | |
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