A catalytic transfer hydrogenation process is provided. The catalyst employed in the process is a metal cyclopentadienyl complex which is coordinated to defined bidentate ligands. Preferred metals include rhodium, ruthenium and iridium. Preferred bidentate ligands are diamines and aminoalcohols, par
A catalytic transfer hydrogenation process is provided. The catalyst employed in the process is a metal cyclopentadienyl complex which is coordinated to defined bidentate ligands. Preferred metals include rhodium, ruthenium and iridium. Preferred bidentate ligands are diamines and aminoalcohols, particularly those comprising chiral centers. The hydrogen donor is advantageously a secondary alcohol or a mixture of triethylamine and formic acid. The process can be employed to transfer hydrogenate ketones and imines, which are preferably prochiral. Catalysts for use in such a process are also provided.
대표청구항▼
A catalytic transfer hydrogenation process is provided. The catalyst employed in the process is a metal cyclopentadienyl complex which is coordinated to defined bidentate ligands. Preferred metals include rhodium, ruthenium and iridium. Preferred bidentate ligands are diamines and aminoalcohols, par
A catalytic transfer hydrogenation process is provided. The catalyst employed in the process is a metal cyclopentadienyl complex which is coordinated to defined bidentate ligands. Preferred metals include rhodium, ruthenium and iridium. Preferred bidentate ligands are diamines and aminoalcohols, particularly those comprising chiral centers. The hydrogen donor is advantageously a secondary alcohol or a mixture of triethylamine and formic acid. The process can be employed to transfer hydrogenate ketones and imines, which are preferably prochiral. Catalysts for use in such a process are also provided. amine of the butoxylated polyalkylenepolyamine is diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, 3-(2-aminoethyl)aminopropylamine, 2-(diethylamino)ethylamine, 3-(dimethylamino)propylamine, dimethyldipropylenetriamine, 4-aminoethyl-1,8-octanediamine, 3-(diethylamino)propylamine, N,N-diethyl-1,4-pentanediamine, dipropylenetriamine, bis(hexamethylene)triamine, N,N-bis(aminopropyl)methylamine, N,N-bis(aminopropyl)ethylamine, N,N-bis(aminopropyl)hexylamine, N,N-bis(aminopropyl)octylamine, N,N-dimethyldipropylenetriamine, N,N-bis(3-dimethylaminopropyl)amine, N-(aminoethyl)butylenediamine, N-(aminopropyl)butylenediamine,bis (aminopropyl)butylenediamine and polyethylenimine. 12. A mixture as claimed in claim 1, wherein the polycarboxylates are homopolymers or copolymers of acrylic acid, methacrylic acid, copolymers of styrene and maleic anhydride, copolymers of isobutene and maleic anhydride and copolymers of diisobutene and maleic anhydride.
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이 특허에 인용된 특허 (3)
Rashkin Jay A. (Piscataway NJ), Hydrogenation of acetophenone using barium-copper chromite-zinc.
Helmchen Gunther (Heidelberg DEX) Langer Thomas (Dossenheim DEX), Ruthenium complexes with a chiral, bidentate phosphine/oxazoline ligand for enantioselective transfer hydrogenation of p.
Baratta, Walter; Siega, Katia; Toniutti, Micaela; Rigo, Pierluigi, Complexes of ruthenium with 2-(aminomethyl)pyridines and phosphines, their preparation and use as catalysts.
Austad, Brian; Behnke, Mark L.; Castro, Alfredo C.; Grogan, Michael J.; Janardanannair, Somarajannair; Lescarbeau, Andre; Peluso, Stephane; Charette, Andre B.; Tremblay, Martin R., Cyclopamine analogs.
Austad, Brian; Behnke, Mark L.; Castro, Alfredo C.; Grogan, Michael J.; Janardanannair, Somarajannair; Lescarbeau, Andre; Peluso, Stephane; Charette, Andre B.; Tremblay, Martin R., Cyclopamine analogs.
Rigo, Pierluigi; Baratta, Walter; Siega, Katia; Chelucci, Giorgio Adolfo; Ballico, Maurizio; Magnolia, Santo, Ligands of the benzo [H] quinoline class and transition metal complexes containing them and use of said complexes as catalysts.
Rigo, Pierluigi; Baratta, Walter; Siega, Katia; Chelucci, Giorgio Adolfo; Ballico, Maurizio; Magnolia, Santo, Ligands of the benzo [h] quinoline class and transition metal complexes containing them and use of said complexes as catalysts.
Rigo, Pierluigi; Baratta, Walter; Siega, Katia; Chelucci, Giorgio Adolfo; Ballico, Maurizio; Magnolia, Santo, Ligands of the benzo[h]quinoline class and transition metal complexes containing them and use of said complexes as catalysts.
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