C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 29/141 (2006.01) B01J 31/24 (2006.01) C07B 53/00 (2006.01) C07C 29/145 (2006.01) C07C 31/135 (2006.01) C07F 17/02 (2006.01)
Patent
CA 2645107
Process for stereoselective hydrogenation by reacting racemic aldehydes or ketones having a stereogenic carbon atom in the position relative to the C(O) group and containing the structural element -(O)C-C-CH- by means of hydrogen in the presence of a base and a ruthenium complex containing a bidentate ligand having coordinating P and N atoms, a monophosphine ligand and anionic and/or uncharged ligands as homogeneous catalyst, with the charge being balanced by one or two monovalent acid anions or a divalent acid anion when uncharged ligands are present.
La présente invention porte sur un procédé d'hydrogénation stéréosélective par réaction d'aldéhydes ou de cétones racémiques comportant un atome de carbone stéréogène dans la position liée au groupement C(O) et contenant l'élément structurel -(O)C-C-CH- avec l'hydrogène en présence d'une base et d'un complexe de ruthénium contenant un ligand bidentate incluant des atomes P et N coordinants, un ligand monophosphine et des ligands anioniques et/ou non chargés au titre de catalyseur homogène, la charge étant équilibrée par un ou deux anions acides monovalents ou un anion acide divalent lorsque des ligands non chargés sont présents.
Nettekoven Ulrike
Perseghini Mauro
Spindler Felix
Fetherstonhaugh & Co.
Solvias Ag
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