indole framework and/or realize indole modification. Nevertheless, the direct selective functionalization on the benzenoid core must overcome the high activity of the C-3 position and still remains highly challenging. Herein, a palladium-catalyzed direct and specific C-7 acylation of indolines in the presence of an easily removed directing group was developed. This strategy usually is considered as a practical
吲哚支架是普遍存在的有用的亚结构,并且已经进行了广泛的研究以构建
吲哚骨架和/或实现
吲哚修饰。然而,在类
苯环核上的直接选择性官能化必须克服C-3位置的高活性,并且仍然具有很高的挑战性。本文中,开发了在容易除去的导向基团存在下
钯催化的
吲哚的直接和特异性C-7酰化。该方法通常被认为是制备酰化
吲哚的实用方法,因为在
氧化条件下
吲哚可以容易地转化为
吲哚。尤其是,我们的策略极大地提高了二
氢吲哚的烷基化收率,在先前的研究中,仅能获得令人满意的收率。此外,