aerobic oxidation of alkyl 4‐anilinocrotonates is described. In the presence of dioxygen, sp3 C−H bonds in 4‐anilinocrotonates can easily be oxidized by using a catalytic amount of a radical cation salt, providing a radical intermediate. After further oxidation and domino cyclization, the desired quinoline derivatives were afforded in high yields. This reaction provides a new way to construct the pharmaceutically
描述了一种通过4-
苯胺基
巴豆酸酯烷基的好氧氧化来轻松构建
喹啉-2-
羧酸酯的方法。在存在双氧的情况下,通过使用催化量的自由基阳离子盐,可轻松地氧化4-
苯胺基
巴豆酸酯中的sp 3 C-H键,从而提供自由基中间体。在进一步氧化和多米诺环化之后,以高收率获得所需的
喹啉衍
生物。该反应提供了构建药学上相关的
喹啉骨架的新方法,避免了苛刻的反应条件和繁琐的原料合成。