Palladium-Catalyzed Double Activation and Arylation of 2° and 3° C(sp3)–H Bonds of the Norbornane System: Formation of a C–C Bond at the Bridgehead Carbon and Bridgehead Quaternary Stereocenter

Abstract

Pd-catalyzed activation and direct arylation of both 2° and the bridgehead 3° (sp3) C-H bonds and an unprecedented C-C bond formation at the bridgehead carbon of the norbornane system are reported. The assembly of bridgehead-substituted norbornane frameworks having contiguous stereocenters was accomplished. X-ray crystal structure analysis of representative molecules unambiguously established the stereochemistry.