Radical Addition Enables 1,2‐Aryl Migration from a Vinyl‐Substituted All‐Carbon Quaternary Center
作者:Zexian Li、Minyan Wang、Zhuangzhi Shi
DOI:10.1002/anie.202010839
日期:2021.1.4
An efficient method for photocatalytic perfluoroalkylation of vinyl‐substituted all‐carbon quaternary centers involving 1,2‐aryl migration has been developed. The rearrangement reactions use fac‐Ir(ppy)3, visible light and commercially available fluoroalkyl halides and can generate valuable multisubstituted perfluoroalkylated compounds in a single step that would be challenging to prepare by other methods
已开发出一种有效的方法,用于涉及1,2-芳基迁移的乙烯基取代的全碳季中心进行光催化全氟烷基化。重排反应使用fac- Ir(ppy)3,可见光和可商购获得的氟代烷基卤化物,并且可以在单个步骤中生成有价值的多取代的全氟烷基化化合物,而这是其他方法难以制备的。从机理上讲,向烯烃中光诱导的烷基加成会导致邻位芳基取代基从其相邻的全碳季中心迁移,并伴随生成带有两个吸电子基团的C自由基,该氢进一步被氢供体还原完成多米诺骨牌序列。