Nickel-Catalyzed Regioselective Hydroamination of Ynamides with Secondary Amines

The first Ni(OTf)(2)-catalyzed hydroamination of ynamides 2 was developed by reacting with secondary amines (1 and 4). This protocol features excellent regioselectivity, a broad substrate scope of secondary aryl amines, and good functional group tolerance for ynamides. Using this method, a variety of substituted ethene-1,1-diamine compounds were prepared in moderate to excellent yields with high regioselectivities.

Automated summary

This study introduces a novel method for the Ni(OTf)(2)-catalyzed hydroamination of ynamides with secondary amines, demonstrating high yields and excellent regioselectivity. The protocol shows good functional group tolerance for ynamides and a broad substrate scope of secondary aryl amines.