Figure 1. Design of a CuH-catalyzed indole alkylation reaction using electrophilic indole reagents.
a) Representative biologically active N- and C3-substituted α-chiral indoles. b) Regioselectivity in conventional enantioselective indole alkylation reactions. c) Proposed mechanistic pathway of enantioselective alkylation of electrophilic indoles. d) Ligand-controlled regiodivergent alkylation of electrophilic indoles.