Nickel‐Catalyzed Tandem Ring Contraction of TEMPO and C−N Bond Transamination of Enaminones toward Amino Diversity of Enaminones

Abstract The reactions of N,N ‐substituted enaminones with TEMPO leading to the synthesis of 2,2‐dimethyl pyrrolidine functionalized new enaminones have been established by Ni(II) catalysis. The interesting ring contraction on TEMPO as well as the enaminone C−N bond amination bring new tool for generating molecular diversity of enaminones in the amino group fragment.