16-02-2017 дата публикации
Номер: US20170044195A1
The present invention relates to novel ruthenium-based triazole carbene complexes comprising specific ligands, their preparation and their use as catalysts in hydrogenation processes. Such complex catalysts are inexpensive, thermally robust, gel formation inhibiting and olefin selective. 2. The catalyst according to claim 1 , wherein:{'sub': 6', '10', '6', '10', '2', '3', '3, 'sup': 3', '3', '3, 'R is independently of one another hydrogen, halogen, nitro, methyl, ethyl, n-propyl, isopropyl, n-butyl, iso-butyl, sec-butyl or tert-butyl, phenyl, or together with the carbon atoms to which they are bound form a C-C-cycloalkyl or C-C-aryl substituent, alkyl thiolate, aryl thiolate, B(R)or B(R), whereas Ris alkyl, aryl, alkoxy or aryloxy or CF,'}n is 0 to 4, preferably 0 to 2, more preferably 0 to 1{'sup': 1', '2, 'sub': '1', 'Rand Rare identical or different and are each methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl, tert-butyl or neopentyl, cyclohexyl, adamantyl, phenyl, C-methanesulphonate, p-toluenesulphonate, 2,4,6-trimethylphenyl (Mes) or 2,4,6-triisopropylphenyl (Trip),'}{'sub': 1', '30', '6', '24, 'X is hydride, halide pseudohalide, alkoxide, amide, triflate, phosphate, borate, straight-chain or branched C-C-alkyl or C-C-aryl, carboxylate, acetate, halogenated acetate, halogenated alkylsulfonate, tosylate or any weakly coordinating anionic ligands, and'}{'sup': 1', '2, 'sub': 1', '10', '3', '20', '3', '1', '10', '1', '10', '1', '10', '1', '10', '1', '10', '1', '10', '1', '10', '1', '10', '1', '10', '1', '5', '1', '5, 'Yand Yare identical or different and are each C-C-alkylphosphine or C-C-cycloalkylphosphine ligand, preferably tricyclohexylphosphine (PCy), a sulfonated C-C-alkylphosphine ligand, a C-C-alkylphosphinite ligand, a C-C-alkylphosphonite ligand, a C-C-alkyl phosphite ligand, a C-C-alkylarsine ligand, a C-C-alkylamine ligand, a substituted or not substituted pyridine ligand, a C-C-alkyl sulfoxide ligand, a C-C-alkyloxy ligand or a C-C ...
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