Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes

Successful combinations of visible‐light photocatalysis with metal catalysis have recently enabled the development of hitherto unknown chemical reactions. Dual mechanisms from merging metal‐free photocatalysts and earth‐abundant metal catalysts are still in their infancy. We report a photo‐organo‐ir...

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Detalles Bibliográficos
Autores principales: Neumeier, Michael, Chakraborty, Uttam, Schaarschmidt, Dieter, de la Pena O'Shea, Victor, Perez‐Ruiz, Raul, Jacobi von Wangelin, Axel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Communications
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7496134/
https://www.ncbi.nlm.nih.gov/pubmed/32190960
http://dx.doi.org/10.1002/anie.202000907
Descripción
Sumario:Successful combinations of visible‐light photocatalysis with metal catalysis have recently enabled the development of hitherto unknown chemical reactions. Dual mechanisms from merging metal‐free photocatalysts and earth‐abundant metal catalysts are still in their infancy. We report a photo‐organo‐iron‐catalyzed cyclotrimerization of alkynes by photoredox activation of a ligand‐free Fe catalyst. The reaction operates under very mild conditions (visible light, 20 °C, 1 h) with 1–2 mol % loading of the three catalysts (dye, amine, FeCl(2)).

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