Rh(III)-Catalyzed Regioselective Functionalization of C–H Bonds of Naphthylcarbamates for Oxidative Annulation with Alkynes

A Rh­(III)-catalyzed
highly efficient and regioselective functionalization
of diverse C–H bonds of naphthylcarbamates for oxidative annulation
with alkynes has been developed. The annulation with a neutral rhodium
catalyst system proceeds through peri C–H
bond functionalization of arylcarbamates to give benzoquinoline derivatives,
while with a cationic rhodium catalyst system it proceeds through ortho C–H functionalization of arylcarbamates to
furnish benzoindole derivatives.