Ln[N(SiMe<sub>3</sub>)<sub>2</sub>]<sub>3</sub>-Catalyzed Cross-Diinsertion of CN/CC into an NH Bond: Facile Synthesis of 1,2,4-Trisubstituted Imidazoles from Propargylamines and Nitriles
A lanthanide‐catalyzed sequential insertion of CN and CC into an NHbond is presented. The convenient reaction, which proceeds under mild conditions, is an efficient method for preparing 1,2,4‐trisubstituted imidazoles directly from readily available propargylamines and nitriles.