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Synthesis and characterization of new complexes of the type [Ru(CO) 2 Cl 2 (2‐phenyl‐1,8‐naphthyridine‐ kN ) (2‐phenyl‐1,8‐naphthyridine‐ kN ′)]. Preliminary applications in homogeneous catalysis
Author(s) -
Moya Sergio A.,
Gajardo Juana,
Araya Juan C.,
Cornejo Jaime J.,
Guerchais Véronique,
Le Bozec Hubert,
Bayón J. Carles,
Pardey Alvaro J.,
Aguirre Pedro
Publication year - 2008
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.1410
Subject(s) - chemistry , hydroformylation , ligand (biochemistry) , ruthenium , dimethylformamide , medicinal chemistry , catalysis , chelation , solvent , styrene , nmr spectra database , proton nmr , stereochemistry , polymer chemistry , organic chemistry , copolymer , rhodium , spectral line , polymer , biochemistry , receptor , physics , astronomy
Abstract Novel ruthenium (II) complexes were prepared containing 2‐phenyl‐1,8‐naphthyridine derivatives. The coordination modes of these ligands were modified by addition of coordinating solvents such as water into the ethanolic reaction media. Under these conditions 1,8‐naphthyridine (napy) moieties act as monodentade ligands forming unusual [Ru(CO) 2 Cl 2 (η 1 ‐2‐phenyl‐1,8‐naphthyridine‐ kN )(η 1 ‐2‐phenyl‐1,8‐naphthyridine‐ kN ′)] complexes. The reaction was reproducible when different 2‐phenyl‐1,8‐naphthyridine derivatives were used. On the other hand, when dry ethanol was used as the solvent we obtained complexes with napy moieties acting as a chelating ligand. The structures proposed for these complexes were supported by NMR spectra, and the presence of two ligands in the [Ru(CO) 2 Cl 2 (η 1 ‐2‐phenyl‐1,8‐naphthyridine‐ kN )(η 1 ‐2‐phenyl‐1,8‐naphthyridine‐ kN ′)] type complexes was confirmed using elemental analysis. All complexes were tested as catalysts in the hydroformylation of styrene showing moderate activity in N , N ′‐dimethylformamide. Copyright © 2008 John Wiley & Sons, Ltd.