Copper-catalyzed C–N bond cross-coupling of aryl halides and amines in water in the presence of ligand derived from oxalyl dihydrazide: scope and limitationKurandina, D.V.; Eliseenkov, E.V.; Khaibulova, T.S.; Petrov, A.A.; Boyarskiy, V.P. · Tetrahedron · 2015