A green and practical method for synthesizing high value-added flavones from readily available chalcones based on visible-light-induced C(sp2)-H functionalization /CO bond formation is described. This reaction utilizes organic dye (Rose Bengal) as the photosensitizer and atmospheric oxygen as the green oxidant and oxygen source without any metals and external additive requirement. Through this methodology
描述了一种基于可见光诱导的 C(sp 2 )-H 功能化/C O 键形成,从现成的
查耳酮合成高附加值
黄酮的绿色实用方法。该反应以有机
染料(玫瑰红)为光敏剂,大气中的
氧气为绿色氧化剂和氧源,无需任何
金属和外加剂。通过这种方法,以中等到良好的收率合成了多种
黄酮。