Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes.
Angew Chem Int Ed Engl
; 59(32): 13473-13478, 2020 Aug 03.
Article
em En
| MEDLINE
| ID: mdl-32190960
ABSTRACT
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, 1â
h) with 1-2â
mol % loading of the three catalysts (dye, amine, FeCl2 ).
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article