Nickel-Catalyzed Remote Asymmetric Hydroalkylation of Alkenyl Ethers to Access Ethers of Chiral Dialkyl Carbinols

Site-and enantio-selective alkyl-alkyl bond formation is privileged in the retrosynthetic analysis due to the universality of sp3-hybridized carbon atoms in organic molecules. Herein, we report a nickel-catalyzed remote asymmetric hydro-alkylation of alkenyl ethers via synchronous implementation of alkene isomerization and enantioselective C(sp(3))-C(sp(3)) bond formation. Regression analysis of catalyst structure-activity relationships accelerates the rational ligand modification through modular regulation. This reaction has several advantages for synthesizing chiral dialkyl carbinols and their ether derivatives, including the broad substrate scope, good functional group tolerance, excellent regioselectivity (>20:1 regioisomeric ratio), and high enantioselectivity (up to 95% enantiomeric excess).

Automated summary

Site- and enantio-selective alkyl-alkyl bond formation via nickel-catalyzed remote asymmetric hydro-alkylation of alkenyl ethers is reported. This reaction demonstrates synchronous alkene isomerization and enantioselective C(sp(3))-C(sp(3)) bond formation. The reaction has broad substrate scope, good functional group tolerance, excellent regioselectivity (>20:1 regioisomeric ratio), and high enantioselectivity (up to 95% enantiomeric excess).