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2,2’-dipyridylamine (DPA) is hereby firstly reported as a novel and efficient tridentate ligand for promoting copper(I)-catalyzed C-O/S coupling reactions of abundant aryl bromines with related phenols or thiophenols. The key to this very discovery is the identification of an  N -donor tripod ligand (DPA), and such a reaction allows the conversion of simple starting materials to complex diaryl ethers or diaryl thioethers, which are important synthetic intermediates in the preparation of bioactive molecules.

2,2’-Dipyridylamine: A tripod ligand enabling practical access to diaryl ethers via Cu-catalyzed coupling reaction