Sequential Photoredox Catalysis for Cascade Aerobic Decarboxylative Povarov and Oxidative Dehydrogenation Reactions of <i>N</i>
-Aryl α-Amino Acids
作者:Tianju Shao、Yanli Yin、Richmond Lee、Xiaowei Zhao、Guobi Chai、Zhiyong Jiang
DOI:10.1002/adsc.201800135
日期:2018.5.2
A visible‐light‐driven sequential photoredox catalysis to allow N‐aryl α‐amino acids to experience efficient cascade aerobic decarboxylative Povarov and oxidative dehydrogenation (ODH) reactions is described. With a dicyanopyrazine‐derived chromophore (DPZ) as a photoredox catalyst in both transformations, two series of valuable azaarenes, i. e., 4‐amino tetrahydroquinolines (THQs) and quinolines,
描述了可见光驱动的顺序光氧化还原催化,以使N-芳基α-氨基酸经历有效的级联好氧脱羧Povarov和氧化脱氢(ODH)反应。在两个转化过程中,都使用双氰基吡嗪衍生的生色团(DPZ)作为光氧化还原催化剂,得到了两个系列的有价值的氮杂芳烃,即 例如,以不同的2和2,3-取代形式获得令人满意的收率的4-氨基四氢喹啉(THQs)和喹啉。为了使4-氨基THQs发生ODH反应,开发了与N-羟基邻苯二甲酰亚胺的协同催化方法。此外,实现了具有高对映选择性的手性N-氨基-2-甲基THQ的空前合成。