Direct<i>ortho</i>-Arylation of<i>N</i>-Phenacylpyridinium Bromide by Palladium-Catalyzed CH-Bond Activation
作者:Jimin Xu、Guolin Cheng、Deyong Su、Yantao Liu、Xinyan Wang、Yuefei Hu
DOI:10.1002/chem.200901399
日期:2009.12.7
A novel palladium catalyzed direct ortho‐arylation of N‐phenacylpyridinium bromide was developed. The amazing N‐phenacyl group regioselectivelyactivates the CH bond of pyridine and automatically departs from the arylated products. A kinetic isotope effect study proved that the reaction went through a CH‐bond activation pathway and 2,6‐diphenylpyridine was produced stepwise from 2‐phenylpyridine