Ligand‐Free Iron‐Catalyzed Homo‐Coupling of Aryllithium Reagents

Abstract The synthesis of symmetric biaryls via the iron‐catalyzed homo‐coupling of aryllithium reagents was developed under a mild condition, in the absence of ligand, with wide range of scope, and in good yields. Investigation on reaction concentration and practical utility of this environmentally friendly procedure also indicates a promising application outlook.