Energy Transfer Photolysis of <i>N</i>-Enoxybenzotriazoles into Benzotriazolyl and α-Carbonyl Radicals
作者:Quynh H. Nguyen、Ho Seong Hwang、Eun Jin Cho、Seunghoon Shin
DOI:10.1021/acscatal.2c02862
日期:2022.8.5
triplet state energy transfer and the presence of a very long-lived radical chain (Φ = 210 and 131, respectively, for [1,3]-shift and carboamination), which was initiated by the addition of electrophilic benzotriazolyl radicals to the olefin moieties. The N–O homolysis was further characterized by electrochemical and photophysical studies, as well as density functional theory computation.
N的辐照在光敏剂存在下,具有蓝色 LED 的 -enoxybenzotriazoles 可有效地呈现两种反应性自由基中间体,即苯并三唑基和 α-羰基自由基。在交叉实验中提出了这些自由基作为离散物种的形成,并且这种 N-O 断裂引发了综合有用的转化,例如原子经济的 [1,3]-转移和基团转移自由基加成,导致生物学有趣的苯并三唑基衍生物。这些转化的便利(<5 分钟)通过三重态能量转移和非常长寿命的自由基链的存在(对于 [1,3] 位移和碳胺化,分别为 Φ = 210 和 131)合理化,这是通过向烯烃部分添加亲电子苯并三唑基自由基引发的。