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Abstract
AbstractHerein, we describe a general hydrodefunctionalization protocol of alcohols and amines through a common isonitrile intermediate. To cleave the relatively inert C−NC bond, we leveraged dual hydrogen atom transfer (HAT) and photoredox catalysis to generate a nucleophilic boryl radical, which readily forms an imidoyl radical intermediate from the isonitrile. Rapid β‐scission then accomplishes defunctionalization. This method has been applied to the hydrodefunctionalization of both amine and alcohol‐containing pharmaceuticals, natural products, and biomolecules. We extended this approach to the reduction of carbonyls and olefins to their saturated counterparts, as well as the hydrodecyanation of alkyl nitriles. Both experimental and computational studies demonstrate a facile β‐scission of the imidoyl radical, and reconcile differences in reactivity between nitriles and isonitriles within our protocol.
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