| abstract |
A process for the reduction by hydrogenation, using molecular H2, of a C3-C70 substrate containing one, two or three ketone and / or aldehyde functional groups within the corresponding alcohol, characterized in that it is carried out in the presence of at least one base and at least one catalyst or pre-catalyst in the form of a C8-C56 ruthenium complex comprising in the coordination sphere a tetradentate ligand (L4) that coordinates ruthenium with: - two nitrogen atoms, each in the form of a primary or secondary amine or the Nalkylimine functional groups and - two sulfur atoms, each in the form of thioether functional groups. |