1. Photo‐Initiated Cobalt‐Catalyzed Radical Olefin Hydrogenation.
- Author
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Sang, Sier, Unruh, Tobias, Demeshko, Serhiy, Domenianni, Luis I., van Leest, Nicolaas P., Marquetand, Philipp, Schneck, Felix, Würtele, Christian, de Zwart, Felix J., de Bruin, Bas, González, Leticia, Vöhringer, Peter, and Schneider, Sven
- Subjects
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ABSTRACTION reactions , *COBALT , *TRANSITION metal hydrides , *HYDROGENATION , *ALKENES , *HYDROGEN atom , *CATALYSTS - Abstract
Outer‐sphere radical hydrogenation of olefins proceeds via stepwise hydrogen atom transfer (HAT) from transition metal hydride species to the substrate. Typical catalysts exhibit M−H bonds that are either too weak to efficiently activate H2 or too strong to reduce unactivated olefins. This contribution evaluates an alternative approach, that starts from a square‐planar cobalt(II) hydride complex. Photoactivation results in Co−H bond homolysis. The three‐coordinate cobalt(I) photoproduct binds H2 to give a dihydrogen complex, which is a strong hydrogen atom donor, enabling the stepwise hydrogenation of both styrenes and unactivated aliphatic olefins with H2 via HAT. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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