Iron‐Catalyzed C(
<i>sp</i>
<sup>2</sup>
)−C(
<i>sp</i>
<sup>3</sup>
) Cross‐Coupling of Chlorobenzamides with Alkyl Grignard Reagents: Development of Catalyst System, Synthetic Scope, and Application
作者:Elwira Bisz、Michal Szostak
DOI:10.1002/adsc.201800849
日期:2019.1.11
preparation of alkylated amide‐derivatives by cross‐coupling chemistry using sustainable protocols is challenging due to sensitivity of the amide functional group to reaction conditions. Herein, we report the synthesis of alkyl‐substituted amides by iron‐catalyzed C(sp2)−C(sp3) cross‐coupling of Grignard reagents with aryl chlorides. The products of these reactions are broadly used in the synthesis of pharmaceuticals
An inexpensive ruthenium‐catalyzed direct C–H olefination of aromatic carboxamides with allyl acetate was developed. This external oxidant‐free protocol provided an efficient route for the synthesis of useful trans‐styrene derivatives in high to excellent yields. The olefination reaction exhibited excellent regioselectivities and allowed the presence of a wide range of functional groups, such as OMe