Ruthenium-Mediated Dual Catalytic Reactions of Isoquinoline <i>via</i>
C−H Activation and Dearomatization for Isoquinolone
作者:Ting-Hsuan Wang、Wei-Chih Lee、Tiow-Gan Ong
DOI:10.1002/adsc.201600313
日期:2016.9.1
We have unraveled the ruthenium‐promoted prototype reaction based on C(sp2)−C(sp3) bond formation through the reigoselective C−H activation of isoquinoline and pyridine derivatives with various alkyl halides, leading to 1‐substituted isoquinoline products in good yield. This C−H catalytic reaction did not rely on chelation assistance of the directing group of the substrates. The dimer [RuCl2(p‐cymene)]2
我们已经解开了钌促进的基于C(sp 2)-C(sp 3)键形成的原型反应,该反应是通过对异喹啉和吡啶衍生物与各种卤代烷进行区域选择性C H活化而形成的,从而得到了1取代的异喹啉产品屈服。该CH催化反应不依赖于底物的导向基团的螯合辅助。二聚体[RuCl 2(p- cymene)] 2与N-杂环卡宾配体,金刚烷羧酸和K 2 CO 3碱在N中的结合最佳的条件是在150°C下使用2-甲基-2-吡咯烷酮溶液。同时,我们还能够通过添加水来化学调节反应模式以脱芳香化,从而制得异喹诺酮产品。该反应方法不适用于其他含氮杂芳烃,如哒嗪和嘧啶。