Enantioselective Construction of Oxindoles Bearing a Quaternary Carbon via Ni−Al Bimetal‐Catalyzed Formyl C−H Alkylation

Enantioselective transition metal‐catalyzed C−H alkylation emerges as one of the most atom‐ and step‐economical routes to chiral quaternary carbons, while big challenges still remain with acyl C−H alkylations. Herein, we use a Ni−Al bimetallic catalyst to facilitate a highly regioselective and highly enantioselective C−H alkylation of formamides with alkenes, constructing various oxindoles bearing a chiral quaternary carbon in up to 94 % yield and up to 95 % ee.