derivatives with the C−H bonds of arenes have met with limited success. Herein, we report the rhodium‐catalyzed cross‐coupling of aryl carbamates with arenes bearing a convertible directing group. The key to success is the use of an in situ generated rhodium bis(N‐heterocyclic carbene) species as the catalyst, which can promote activation of the inert C(sp2)−O bond in aryl carbamates.
Dehydrative Direct Arylations of Arenes with Phenols via Ruthenium-Catalyzed C−H and C−OH Bond Functionalizations
作者:Lutz Ackermann、Michael Mulzer
DOI:10.1021/ol802252m
日期:2008.11.6
Phenols can be employed as proelectrophiles in operationally simple ruthenium-catalyzed dehydrative direct arylations, proceeding through chemo- and regioselective functionalizations of C-H and C-OH bonds.