Palladium-catalyzed regio- and enantioselective migratory allylic C(sp³)-H functionalization.

ABSTRACT: Transition metal-catalyzed asymmetric allylic substitution with a suitably pre-stored leaving group in the substrate is widely used in organic synthesis. In contrast, the enantioselective allylic C(sp³)-H functionalization is more straightforward but far less explored. Here we report a catalytic protocol for the long-standing challenging enantioselective allylic C(sp³)-H functionalization. Through palladium hydride-catalyzed chain-walking and allylic substitution, allylic C-H functionalization of a wide range of acyclic nonconjugated dienes is achieved in high yields (up to 93% yield), high enantioselectivities (up to 98:2 er), and with 100% atom efficiency. Exploring the reactivity of substrates with varying pK_a values uncovers a reasonable scope of nucleo

SUBMITTER: Chen YW 

PROVIDER: S-EPMC8463607 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature