iron-catalyzed method for the selective oxyfunctionalization of benzylic C(sp3)–H bonds in aliphatic amine substrates. This transformation is selective for benzylic C–H bonds that are remote (i.e., at least three carbons) from the amine functional group. High site selectivity is achieved by in situ protonation of the amine with trifluoroacetic acid, which deactivates more traditionally reactive C–H sites that are
我们报告了一种
铁催化方法的发展,该方法用于在脂肪族胺底物中的苄基C(sp 3)-H键进行选择性的氧官能化。对于远离胺官能团(至少三个碳原子)的苄基CH键,该转化过程具有选择性。通过用
三氟乙酸对胺进行原位质子化,可实现较高的位点选择性,从而使更传统的反应性C–H位(即α至氮原子)失活。通过多种含胺的
生物活性分子的合成和衍生化,证明了该方法的范围和合成实用性。