Patent ID: 7307037

Claim:
A metallic catalyst of the formula (I) where: [Met] is a metal selected from the group consisting of Ru, Rh, Ir, Pt, Pd, Ni, Re, and Cu, having a number of oxidation n, where n is 0, +1, +2 or +3, and containing possible ancillary co-ligands for completing its state of valence; represents an aromatic pentatomic heterocycle, containing at least one hetero-atom selected from the group consisting of: oxygen, sulphur and nitrogen; T and T′, which are the same as or different from one another, are selected from the group consisting of hydrogen, a linear, cyclic or branched C1-C10 alkyl, hydroxyalkyl, alkoxyalkyl, phenyl, alkylphenyl, naphthyl, alkoxyphenyl, dialkylaminophenyl, carboxyphenyl, carbalkoxyphenyl, or else T and T′, taken together, form an aromatic carbocyclic ring, possibly substituted by one or more alkyl, hydroxy, alkoxy, dialkylamino, carboxy, carbalkoxy or sulphonic groups; W is a substituent present only when the hetero-atom is nitrogen and is selected from H, a linear, cyclic or branched C1-C10 alkyl, alkoxyalkyl, phenyl, alkylphenyl, naphthyl, alkoxyphenyl, dialkylaminophenyl, carboxyphenyl, carbalkoxyphenyl; R is selected from hydrogen, a linear, cyclic or branched C1-C10 alkyl, hydroxyalkyl, alkoxyalkyl, phenyl, alkylphenyl; X is selected from H, a linear, cyclic or branched C1-C10 alkyl, hydroxy, alkoxy, benzyloxy, acyloxy, O-tetrahydropyranyl, O-tetrahydrofuranyl, or else where the two substituents X, taken together with m carbon atoms bound thereto, with m=1, 2 or 3, form a carbocyclic ring with a total of 5-7 atoms or a saturated heterocyclic ring with 5-7 atoms.