Patent ID: 8519069
Filing Date: 2013-08-27
Classification: C07F

Abstract:
1. A process for the preparation of a catalytic complex consisting of: a. a metal atom selected from the group consisting of ruthenium and osmium; b. two bidentate Schiff base ligands comprising an imino group and being coordinated to the metal, in addition to the nitrogen atom of said imino group, through at least one further heteroatom selected from the group consisting of oxygen, sulphur and selenium ligated to said metal; c. a nucleophilic carbene ligand ligated to said metal; and d. a carbon-containing ligand ligated to said metal, wherein said carbon-containing ligand is a substituted or unsubstituted alkylidene, vinylidene or indenylidene ligand; which comprises the step of reacting a ruthenium or osmium catalyst precursor consisting of: a. a metal atom selected from the group consisting of ruthenium and osmium; b. two anionic ligands; c. a nucleophilic carbene ligand ligated to said metal; d. a carbon-containing ligand ligated to said metal, wherein said carbon-containing ligand is a substituted or unsubstituted alkylidene, vinylidene or indenylidene ligand; and e. a neutral ligand or a ruthenium or osmium catalyst precursor consisting of: a. a metal atom selected from the group consisting of ruthenium and osmium; b. one anionic ligand; c. one bidentate Schiff base ligand comprising an imino group and being coordinated to the metal, in addition to the nitrogen atom of said imino group, through at least one further heteroatom selected from the group consisting of oxygen, sulphur and selenium ligated to said metal; d. a nucleophilic carbene ligand ligated to said metal; and e. a carbon-containing ligand ligated to said metal, wherein said carbon-containing ligand is a substituted or unsubstituted alkylidene, vinylidene or indenylidene ligand; with 1.0 to 3.0 equivalents of a bidentate Schiff base ligand in a non polar solvent and in the presence of a weak base.