Palladium-Catalyzed Regioselective γ-Mono- and Diarylation of Acrylamide Derivatives with Aryl Halides
作者:Ming Yu、Yongju Xie、Jinheng Li、Yuhong Zhang
DOI:10.1002/adsc.201100373
日期:2011.11
Palladium-catalyzed direct mono- and diarylations involving C(sp3)H cleavage at the γ-position of acrylamides are described. The monoarylation products can be obtained with ortho-substituted aryl halides. Single crystal X-ray diffraction has shown that the double bond has shifted towards the introduced aryl group to afford the γ-arylated β,γ-unsaturated amide products. A second arylation occurs when
描述了钯催化的直接单和二芳基化反应,涉及在丙烯酰胺的γ位进行C(sp 3)H裂解。单芳基化产物可以用邻位取代的芳基卤化物获得。单晶X射线衍射表明,双键已移向引入的芳基,以提供γ-芳基化的β,γ-不饱和酰胺产物。当使用较少空间位阻的芳基卤化物时,发生第二芳基化。该化学为γ-芳基化化合物的合成提供了一种新颖的方法。