Abstract Syntheses of chelating enaminoketones for a potential use in enrichment or recovery of metals from their aqueous solutions are described. Tridentate ligands were prepared either from aromatic amines, triethoxymethane and cyclic 1, 3-dicarbonyl compounds in a one-step synthesis, or from the anilinomethylene compounds obtained by this approach and aliphatic amines. Polymerizable ligands have also been synthesized by ...