Site-Selective Ruthenium-Catalyzed C–H Bond Arylations with Boronic Acids: Exploiting Isoindolinones as a Weak Directing Group
作者:Yu-Chao Yuan、Christian Bruneau、Thierry Roisnel、Rafael Gramage-Doria
DOI:10.1021/acs.joc.9b01563
日期:2019.10.18
functionalization. The reactions exclusively led to monoarylated products, and only ortho selectivity was observed in the aromatic ring connected to the nitrogen atom. Interestingly, no C-H bond functionalization was observed in the other benzene ring in the ortho position with respect to the carbonyl group. This ruthenium-catalyzed reaction displayed a high functional group tolerance, and it employed readily
在钌催化下,通过CH键官能化作用,与生物学相关的N-芳基异吲哚啉酮可以有效地进行芳基化反应。该反应仅导致单芳基化的产物,并且在与氮原子连接的芳环中仅观察到邻位选择性。有趣的是,在相对于羰基的邻位的另一个苯环中未观察到CH键官能化。该钌催化的反应显示出较高的官能团耐受性,并且使用容易获得的基准稳定的硼酸和芳基三氟硼酸钾衍生物作为偶联伙伴。展示了使用这种方法对吲哚洛芬进行的诱人的后期功能化。