PAd2‐DalPhos Enables the Nickel‐Catalyzed C−N Cross‐Coupling of Primary Heteroarylamines and (Hetero)aryl Chlorides

Base‐metal catalysts capable of enabling the assembly of heteroatom‐dense molecules by cross‐coupling of primary heteroarylamines and (hetero)aryl chlorides, while sought‐after given the ubiquity of unsymmetrical di(hetero)arylamino fragments in pharmacophores, are unknown. Herein, we disclose the new “double cage” bisphosphine PAd2‐DalPhos ( L2 ). The derived air‐stable Ni II pre‐catalyst C2 functions well at low loadings in challenging test C−N cross‐couplings with established substrates, and facilitates the first Ni‐catalyzed C−N cross‐couplings of primary five‐ or six‐membered ring heteroarylamines and activated (hetero)aryl chlorides, with synthetically useful scope that is competitive with Pd catalysis.