Copper-catalyzed enantioselective cyanation of benzylic C–H bonds via radical relay

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Direct methods that enable stereoselective functionalization of C(sp~3)–H bonds could facilitate efficient preparation of therapeutics and agrochemicals,and shall have a major effect on the discovery and development of new pharmaceuticals.Although the transformations through C(sp~2)–H bond cleavage have been significantly developed in the past decades,the direct C(sp~3)–H functionalization,especially the asymmetric transformation is still a big challenge.Demon- Direct methods that enable stereoselective functionalization of C (sp ~ 3) -H bonds may facilitate efficient preparation of therapeutics and agrochemicals, and shall have a major effect on the discovery and development of new pharmaceuticals. Although the transformations through C (sp ~ 2) -H bond cleavage have been significantly developed in past decades, the direct C (sp ~ 3) -H functionalization, especially the asymmetric transformation is still a big challenge. Detect-
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