A practical and efficient method is established for the direct oxidative lactonization of the C(sp3)–H bonds relying on visible-light-induced photoredox catalysis. This protocol expediently allows the delivery of diverse phthalides using oxygen as the sole terminal oxidant under metal-free conditions at room temperature. Notably, the choice of an appropriate hydrogen atom transfer (HAT) cocatalyst
建立了一种实用且有效的方法,用于依赖可见光诱导的光氧化还原催化的 C(sp 3 )-H 键的直接氧化内酯化。该协议方便地允许在室温下在无
金属条件下使用
氧气作为唯一的终端氧化剂输送各种
苯酞。值得注意的是,选择合适的氢原子转移 (HAT) 助催化剂对这一过程的成功至关重要。