Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes
作者:Michael Neumeier、Uttam Chakraborty、Dieter Schaarschmidt、Victor Pena O'Shea、Raul Perez‐Ruiz、Axel Jacobi von Wangelin
DOI:10.1002/anie.202000907
日期:2020.8.3
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