Аннотация:Abstract A copper‐catalyzed, intramolecular borylative cyclization of vinyl arenes with imines is reported, which affords enantio‐enriched indolines as a single diastereomer under mild conditions. A benzylcopper species is generated by Cu‐Bpin addition to the alkene, which then acts as a nucleophile for intramolecular imine addition. The reaction is applicable to various vinyl arenes with an imine moiety at the ortho ‐position, including heterocycles, for formation of borylated indolines in good yields and ee values up to 90 %.
