Abstract

Transition-metal-catalyzed hydrofunctionalization of methylenecyclopropanes presents a useful but challenging transformation due to the complex selectivity and multiple reaction pathways. We describe herein an unprecedented highly efficient and selective palladium-catalyzed hydrocyanation of methylenecyclopropanes to give various 2-substituted allylic nitriles. Mechanistic studies demonstrated that the transformation may undergo Markovnikov-type hydrometalation and β-carbon elimination.

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