Visible‐Light‐Promoted Iron‐Catalyzed C(sp
<sup>2</sup>
)–C(sp
<sup>3</sup>
) Kumada Cross‐Coupling in Flow
作者:Xiao‐Jing Wei、Irini Abdiaj、Carlo Sambiagio、Chenfei Li、Eli Zysman‐Colman、Jesús Alcázar、Timothy Noël
DOI:10.1002/anie.201906462
日期:2019.9.9
A continuous‐flow, visible‐light‐promoted method has been developed to overcome the limitations of iron‐catalyzed Kumada–Corriu cross‐coupling reactions. A variety of strongly electron rich aryl chlorides, previously hardly reactive, could be efficiently coupled with aliphatic Grignard reagents at room temperature in high yields and within a few minutes’ residence time, considerably enhancing the applicability
为了克服铁催化的Kumada-Corriu交叉偶联反应的局限性,开发了一种连续流,可见光促进的方法。可以在室温下以高收率和数分钟的停留时间,在室温下与脂肪族格氏试剂有效地偶联各种以前几乎没有反应性的强电子富集的芳基氯化物,从而大大提高了这种铁催化反应的适用性。该协议的鲁棒性已在数克规模上得到了证明,从而为将来的药物应用提供了潜力。