Donor–Acceptor Complex Enables Cascade Radical Cyclization of <i>N</i>-Arylacrylamides with Katritzky Salts
作者:Yu Lu、Chang-Zhen Fang、Qiang Liu、Bao-Lin Li、Zhi-Xiang Wang、Xiang-Yu Chen
DOI:10.1021/acs.orglett.1c01758
日期:2021.7.16
Cascade radical cyclization of N-arylacrylamides is an attractive method to prepare 3,3-disubstituted oxindoles. As the reported methods often require additives and/or photocatalysts, we herein report an additive- and photocatalyst-free deaminative strategy for their synthesis under mild conditions, enabled by photoactivation of an electron donor–acceptor (EDA) complex. DFT studies indicated that the
N-芳基丙烯酰胺的级联自由基环化是制备 3,3-二取代羟吲哚的一种有吸引力的方法。由于报道的方法通常需要添加剂和/或光催化剂,我们在此报告了一种在温和条件下合成的无添加剂和无光催化剂的脱氨基策略,通过电子供体 - 受体(EDA)复合物的光活化实现。DFT 研究表明,明确的二甲苯溶剂分子的参与可以大大增强N-芳基丙烯酰胺和卡特里茨基盐之间的 EDA 复合物的光活性。