Neumeier Michael, Chakraborty Uttam, Schaarschmidt Dieter, de la Pena O'Shea Victor, Perez-Ruiz Raul, Jacobi von Wangelin Axel
Department of Chemistry, University of Hamburg, Martin Luther King Pl 6, 20146, Hamburg, Germany.
Photoactivated Processes, IMDEA Energy Institute, Ramin de la Sagra 3, 28935, Mistoles, Spain.
Angew Chem Int Ed Engl. 2020 Aug 3;59(32):13473-13478. doi: 10.1002/anie.202000907. Epub 2020 May 27.
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 ).
可见光光催化与金属催化的成功结合最近推动了前所未有的化学反应的发展。将无金属光催化剂与储量丰富的金属催化剂相结合的双重机制仍处于起步阶段。我们报道了一种通过无配体铁催化剂的光氧化还原活化实现的光有机铁催化的炔烃环三聚反应。该反应在非常温和的条件下（可见光、20 °C、1小时）进行，三种催化剂（染料、胺、FeCl）的负载量为1-2 mol%。
