Iron-Catalyzed C-H Bond Functionalization for the Exclusive Synthesis of Pyrido[1,2-<i>a</i>]indoles or Triarylmethanols
作者:Iyyanar Karthikeyan、Govindasamy Sekar
DOI:10.1002/ejoc.201403233
日期:2014.12
The efficient and selective iron-catalyzed C–H activation of 2-benzhydrylpyridine derivatives was employed for the preparation of pyrido[1,2-a]indoles through an intramolecular C–H amination reaction. In the presence of molecular oxygen as the sole oxidant, the same 2-benzhydrylpyridines were also used for the synthesis of the corresponding tertiary alcohols. In these approaches, the iron catalyst
2-二苯甲基吡啶衍生物的高效和选择性铁催化C-H活化用于通过分子内C-H胺化反应制备吡啶并[1,2-a]吲哚。在分子氧作为唯一氧化剂的存在下,同样的 2-二苯甲基吡啶也用于合成相应的叔醇。在这些方法中,铁催化剂用于选择性激活 2-二苯甲基吡啶的 C(sp2)-H 键,在分子内闭环 C-H 胺化反应的情况下,吡啶氮原子是一个导向基团,如以及亲核试剂和相同化合物的 C(sp3)-H 键,在氧化反应的情况下,得到相应的三芳基甲醇。