Acid-promoted palladium(II)-catalyzed ortho-halogenation of primary benzamides: En route to halo-arenes
作者:Yogesh Jaiswal、Amit Kumar
DOI:10.1016/j.catcom.2019.105784
日期:2019.11
Brønsted acid-promoted palladium(II)-catalyzed regioselective installation of halogens (Br, Cl, and I) to the aromatic ring of benzamide derivatives has been achieved using primary amides. A wide variety of benzamides were compatible under established conditions to afford the halogenated products without installing any external auxiliary. Mild reaction conditions, use of primary amide as a directing
使用伯酰胺已经实现了布朗斯台德酸促进的钯(II)催化的卤素(Br,Cl和I)在苯甲酰胺衍生物的芳环上的区域选择性安装。在既定条件下,各种各样的苯甲酰胺都是相容的,无需安装任何外部助剂即可提供卤化产物。温和的反应条件,使用伯酰胺作为指导基团,外部无添加剂的条件和克级反应是该方案的一些吸引人的特征。详细的实验结果表明,布朗斯台德酸在这一转化过程中起着至关重要的作用。