numerous possible applications of thiazoles as ligands for catalysis and as activemolecules in medicinal chemistry, only a few studies have dealt with their versatile chemistry. Several selective modifications of the structure of these derivatives and mainly of thiazoyl phosphines are detailed, thus illustrating the great possibilities to tailor at will their structures and therefore their properties. The
Thiazolyl-phosphine hydrochloride salts: effective auxiliary ligands for ruthenium-catalyzed nitrile hydration reactions and related amide bond forming processes in water
coordinated to the ruthenium(II) fragment [RuCl2(η6-p-cymene)]. The resulting complexes were evaluated as potential catalysts for the selective hydration of nitriles to primary amides in environmentally friendly aqueous medium. The best results in terms of activity were achieved when tris(5-(2-aminothiazolyl))phosphine trihydrochloride was used as ligand. Using the Ru(II) complex 9 derived from this