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US 9,802,972 B2Granted
Ruthenium- or osmium-based complex catalysts
AssigneeArlanxeo Deutschland GmbH
InventorsZhenli Wei, Qingchun Liu
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Abstract
The present invention provides novel ruthenium or osmium based complex structures with a unique combination of ligands comprising a Schiff-base type ligand, a N-heterocyclic carbene ligand and a CO ligand which can be prepared according to two different routes involving easily accessible starting materials and which represent excellent catalysts for hydrogenating unsaturated compounds, oligomers and polymers, in particular at unforeseeably low temperatures.
Claims30
A complex having the general formula (I)
- wherein:
- M is ruthenium or osmium;
- Y represents H, F, Cl, Br, I, CF3, pyridine, —OC6H5, CF3COO—, CH3SO3—, or BF4;
- R1, R2, R3, and R4 are identical or different and represent
- H;
- NO2;
- CF3;
- halogen;
- or
- straight chain or branched, substituted or unsubstituted C1-C14-alkyl;
- or
- substituted or unsubstituted C3-C10-cycloalkyl;
- or
- substituted or unsubstituted C6-C14-aryl, which aryl group is either unsubstituted or contains 1, 2, 3, 4 or 5 substituents;
- or
- OR7, OC(═O)R7, CO(═O)R7, SO3R7, SO3N(R7)2 or SO3Na wherein R7 represents H, straight chain or branched, substituted or unsubstituted C1-C14-alkyl;
- or
- (N(R8)3)+X− wherein X is halide, and R8 are identical or different and represent H;
- straight chain or branched, substituted or unsubstituted C1-C14-alkyl, substituted or unsubstituted C6-C14-aryl, which aryl group is either unsubstituted or contains 1, 2, 3, 4 or 5 substituents;
- or
- tris (C1-C6-alkoxy)silyl-C1-C6-alkyl, tris (C6-C14-aryloxy)silyl-C1-C6-alkyl, or tris(C3-C10-cycloalkoxy)silyl-C1-C6-alkyl;
- R5 represents H;
- or
- straight chain or branched, substituted or unsubstituted C1-C14-alkyl;
- or
- substituted or unsubstituted C3-C10-cycloalkyl;
- or
- substituted or unsubstituted C6-C14-aryl, which aryl group is either unsubstituted or contains 1, 2, 3, 4 or 5 identical or different substituents;
- and
- R6 represents H, or
- straight chain or branched, substituted or unsubstituted C1-C14-alkyl;
- or
- substituted or unsubstituted C3-C10-cycloalkyl;
- or
- substituted or unsubstituted C6-C14-aryl, which aryl group is either unsubstituted or contains 1, 2, 3, 4 or 5 substituents.
32 more elements
Dependencies are inferred from the claim text.