Copper‐Catalyzed Ullmann‐Type Synthesis of Diaryl Ethers Assisted by Salicylaldimine Ligands.

2-[(2-Isopropylphenylimino)methyl]phenol is found to be an efficient, cheap, and facile ligand for the CuX-catalyzed O-arylation of phenols with aryl iodides and bromides.