Electron Transfer Photoredox Catalysis: Intramolecular Radical Addition to Indoles and Pyrroles
作者:Joseph W. Tucker、Jagan M. R. Narayanam、Scott W. Krabbe、Corey R. J. Stephenson
DOI:10.1021/ol902703k
日期:2010.1.15
The utilization of the photoredox catalyst, tris(2,2′-bipyridyl)ruthenium dichloride, and a household light bulb to effect radical cyclizations onto indoles and pyrroles at room temperature is reported. A reactive free radical intermediate is generated via the reduction of an activated C−Br bond by the single electron reductant, Ru(I), generated in a visible light induced photocatalytic cycle. This
据报道,利用光氧化还原催化剂,三(2,2'-联吡啶基)二氯化钌和家用灯泡在室温下将自由基环化成吲哚和吡咯。反应性自由基中间体是通过在可见光诱导的光催化循环中生成的单电子还原剂Ru(I)还原活化的C-Br键而生成的。该系统代表了光氧化还原催化在常规自由基工艺中的应用的扩展。