Abstract
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.
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