Double C−H Activation: The Palladium-Catalyzed Direct C-Arylation of Xanthines with Arenes
作者:Chandi C. Malakar、Dietmar Schmidt、Jürgen Conrad、Uwe Beifuss
DOI:10.1021/ol200065s
日期:2011.3.18
The novel Pd-catalyzedC(sp2)−H/C(sp2)−H cross-coupling of unactivated xanthines with unactivated arenes utilizing a combination of Ag(I) and O2 as oxidants exclusively yields C-8 arylated xanthines in a single synthetic operation.