Counterion‐Mediated Hydrogen‐Bonding Effects: Mechanistic Study of Gold(I)‐Catalyzed Enantioselective Hydroamination of Allenes

Abstract

Two of a kind: A new type of counterion-mediated syn-addition mechanism has been presented in gold-catalyzed enantioselective hydroamination reactions with [(R)-binap(AuOPNB)2] (OPNB=para-nitrobenzoate). A combination of both hydrogen bonding and the NAu interaction efficiently controlled the challenging enantioselectivity of allenes.