1,2,3,4-Tetrahydro-8-hydroxyquinoline-Promoted Copper-Catalyzed Coupling of Nitrogen Nucleophiles and Aryl Bromides.

Based on the dramatic accelerating effect of 2-aminophenol, three ligands derived from 2-aminophenol were developed. Copper-catalyzed coupling reaction of nitrogen-containing nucleophiles with aryl bromides was efficiently carried out under mild conditions using 1,2,3,4-tetrahydro-8-hydrox-yquinoline as a novel, simple, and versatile ligand.