attracted tremendous attention in the field of photocatalysis, owing to their superior optoelectronic properties for photocatalytic reactions, including high absorption coefficients and long photogenerated carrier lifetimes. Herein, by choosing 2‐(3,4‐dimethoxyphenyl)‐3‐oxobutanenitrile as a model substrate, we demonstrate that the stereoselective (>99 %) C−C oxidative coupling reaction can be realized with
intramolecular cyclization of electron-rich α-aryl ketones. The alkoxy substituent on the benzene ring in the substrates was essential for an efficient cyclization to occur. This novel method allows the construction of benzo[b]furan rings by joining the O-atom on the side chain to the benzene ring via direct oxidative aromatic C−O bond formation.
通过FeCl 3介导的富电子α-芳基酮的分子内环化,获得了多种3-官能化的苯并[ b ]呋喃。底物中苯环上的烷氧基取代基对于有效环化的发生至关重要。这种新方法允许通过直接氧化芳香族C-O键形成将侧链上的O原子与苯环相连,从而构造苯并[ b ]呋喃环。