| abstract |
The present invention relates to processes for the hydrogenation reduction, using molecular H2, of a C5-C20 substrate containing one or two aldehyde functional groups in the corresponding alcohol or diol, characterized in that the process is carried out in the presence of - at least one catalyst or pre-catalyst in the form of a ruthenium complex having a coordination sphere of N2P2O2, where the coordination atoms of N2 are provided by the first bidentate ligand, the coordination atoms of P2 they are provided by a second bidentate ligand and the O2 coordination atoms are provided by two non-linear carboxylate ligands; and - optionally an acid additive. |