Weinreb Amide Directed Versatile C−H Bond Functionalization under (η
<sup>5</sup>
‐Pentamethylcyclopentadienyl)cobalt(III) Catalysis
作者:Kentaro Kawai、Youka Bunno、Tatsuhiko Yoshino、Shigeki Matsunaga
DOI:10.1002/chem.201801750
日期:2018.7.17
The (η5‐pentamethylcyclopentadienyl)cobalt(III) (Cp*CoIII)‐catalyzed C−H bond functionalization of aromatic, heteroaromatic, and α,β‐unsaturated Weinreb amides was explored. C−H allylation reactions with the use of allyl carbonate and a perfluoroalkene, oxidative alkenylation reactions with the use of ethyl acrylate, iodination reactions with the use of N‐iodosuccinimide, and amidation reactions with
探索了(η 5 -五甲基环戊二烯基)钴 (III) (Cp*Co III )-催化的芳族、杂芳族和 α,β-不饱和 Weinreb 酰胺的 C-H 键官能化。Cp * Co ( CO)I 2在阳离子 Ag 盐和 AgOAc 存在下提供各种合成有用的结构单元。C−H 烯丙基化的机理研究表明,C−H 激活步骤决定速率并且几乎不可逆。