A visible-light-promoted and transition-metal-free photoredox-catalysis strategy is developed for the synthesis of thioxanthone derivatives (TXs). The mechanistic study and density functional theory calculations suggest that visible-light-promoted intramolecular cyclization can be divided into hydrogen atom transfer, C–C formation, and oxidative dehydrogenation with high regioselectivity and reactivity
开发了一种可见光促进且不含过渡
金属的光氧化还原催化策略,用于合成
噻吨酮衍
生物(TX)。机理研究和密度泛函理论计算表明,可见光促进的分子内环化可分为氢原子转移、C-C形成和具有高区域选择性和反应活性的氧化脱氢。值得注意的是,这种 C-C 形成策略可用于基于 TX 的商业光
引发剂和克级药物。