Platinum-Catalyzed Double Acylation of 2-(Aryloxy)pyridines via Direct C–H Activation
作者:Donald C. McAteer、Erman Javed、Lily Huo、Shouquan Huo
DOI:10.1021/acs.orglett.7b00423
日期:2017.4.7
acylation of 2-(aryloxy)pyridines with acyl chlorides is discovered. The reaction requires neither an oxidant nor other additives. When both ortho positions of the aryl group are accessible, the double acylation occurs readily to produce the diacylated products. Aliphatic, aromatic, and α,β-unsaturated acyl groups can all be introduced. The acylation reaction may proceed through an analogous aromatic
发现了独特的,铂催化的2-(芳氧基)吡啶与酰氯的直接CH酰化反应。该反应既不需要氧化剂也不需要其他添加剂。当芳基的两个邻位都可接近时,容易发生双重酰化以产生二酰化产物。可以引入脂肪族,芳香族和α,β-不饱和酰基。酰化反应可以通过由铂在酰氯上的亲核攻击触发的类似芳族亲电子取代来进行。