Free-Amine Directed Arylation of Biaryl-2-amines with Aryl Iodides by Palladium Catalysis
作者:Zunjun Liang、Ruokun Feng、Hong Yin、Yuhong Zhang
DOI:10.1021/ol402207g
日期:2013.9.6
A new palladium-catalyzed free-amine directedarylation of C(sp2)–H bonds in the presence of AgOAc and TFA is described. Biaryl-2-amines react with various aryl iodides to give the corresponding mono- or diarylated products with exclusive regioselectivity.
Palladium(II)‐catalyzed arylation of arenes with aryl boronicacids and a free amine as directing group in aqueous medium has been developed. High reactivity and chemoselectivity for the formation of carbon–carbon bonds were achieved by the use of soluble silver salts. The addition of water is crucial to improve the arylation yield.