Easily Accessible Auxiliary for Palladium-Catalyzed Intramolecular Amination of C(sp<sup>2</sup>)H and C(sp<sup>3</sup>)H Bonds at δ- and ε-Positions
for selectiveCH activation under palladium catalysis. The novel auxiliary showed its first powerful application in CH functionalization of remote positions. Both C(sp2)H and C(sp3)Hbonds at δ‐ and ε‐positions were effectively activated, thus giving tetrahydroquinolines, benzomorpholines, pyrrolidines, and indolines in moderate to excellent yields by palladium‐catalyzed intramolecular CH amination