Aromatic Amination of Aryl Bromides Catalysed by Copper/β-Diketone Catalysts: The Effect of Concentration - de Lange, Ben; Lambers-Verstappen, Marielle H; Schmieder-van de Vondervoort, Lizette; Sereinig, Natascha; de Rijk, Ron; de Vries, André H M; de Vries, Johannes G (Synlett, 2006)