Direct synthesis of anthracenes from o-tolualdehydes and aryl iodides through Pd(II)-Catalyzed sp C H arylation and electrophilic aromatic cyclization
作者:Hyojin Park、Kwangho Yoo、Byunghyuck Jung、Min Kim
DOI:10.1016/j.tet.2018.03.006
日期:2018.4
The first direct synthesis of substituted anthracenes from o-tolualdehydes and aryl iodides via a Pd(II)-catalyzed CH arylation using an alcohol-bearing transient directing group and subsequent AgOTf-assisted electrophilic aromatic cyclization is described. New transient directing groups consisting of amino acids and amino alcohols enhanced the reactivity, and the CH arylation was complete in 12 h