The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 2013
Filed:
Dec. 19, 2011
Francesco Santoro, Geneva, CH;
Lionel Saudan, Geneva, CH;
Michel Alfred Joseph Saudan, Geneva, CH;
Sylvia Joyeuse Adélaïde Ada Saudan, Geneva, CH;
Firmenich SA, Geneva, CH;
Abstract
The present invention relates to the field of catalytic hydrogenation and, more particularly, to the use of specific ruthenium catalysts, or pre-catalysts, in hydrogenation processes for the reduction of ketones and/or aldehydes into the corresponding alcohol respectively. Said catalysts are ruthenium complexes comprising a tetradentate ligand (L4) coordinating the ruthenium with: —two nitrogen atoms, each in the form of a primary or secondary amine (i.e. a NHor NH group) or N-alkyl imine functional groups (i.e. a C═N group), and —two sulfur atoms, each in the form of thioether functional groups.