Chiral diphosphonites as ligands in the ruthenium-catalysed...

Details Chiral diphosphonites as ligands in the ruthenium-catalysed... Chiral diphosphonites as ligands in the ruthenium-catalysed...

C - Chemistry, Metallurgy

07

F

C07F 15/00 (2006.01) B01J 31/12 (2006.01) B01J 31/22 (2006.01) C07B 53/00 (2006.01) C07F 9/6564 (2006.01) C07F 9/6571 (2006.01) C07F 9/6574 (2006.01)

Patent

CA 2610095

Chiral ruthenium complexes are disclosed, obtained by reaction of a ruthenium salt with a chiral diphosphonite. Chiral diols with the general structure given in scheme 1 are preferably used as chiral diphosphonites. Said ruthenium complexes can be simply and economically obtained and provide high enantioselectivity on reduction of ketones, ~-keto-esters and ketimines.

L'invention concerne des complexes de ruthénium chiraux qui sont produits au moyen d'une réaction entre un sel de ruthénium et un diphosphonite chiral. De préférence, les disphophonites chiraux utilisés sont des diols chiraux dont la structure générale est représentée sur le schéma 1. Les complexes de ruthénium selon l'invention peuvent être produits facilement et de manière peu onéreuse, et présentent une énantiosélectivité élevée lors de la réduction de cétones, de ß-céto-esters, et de cétimines.

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