Domino Carbopalladation−Carbonylation: Generating Quaternary Stereocenters while Controlling β-Hydride Elimination

A domino carbopalladation-carbonylation sequence for substrates possessing beta-hydrogens is explored. This allows for the construction of complex architectures with vicinal stereocenters in a concise and rapid fashion via the stereocontrolled formation of two carbon-carbon bonds. An integral aspect of this domino reaction is the ability to control beta-hydride elimination of the organopalladium intermediate and instead form the carbonylation product.