Patents by Inventor Adeline Marie Joseèphe Voelklin

Adeline Marie Joseèphe Voelklin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7884223
    Abstract: The invention relates to an enantiomerically enriched chiral compound comprising a transition metal M, which comprises four, five or six coordinating groups of which at least one pair is linked together to form a bidentate ligand, in which M is directly bound via one single ?-bond to a carbon atom of an optionally substituted and/or optionally fused (hetero)aromatic ring of said bidentate ligand and in which M is directly bound to a nitrogen atom of a primary or secondary amino group of said bidentate ligand, thereby forming a metallacycle between said bidentate ligand and the metal M, said metal M being selected from the metals of groups 8 and 9 of the Periodic Table of the Elements, in particular iron, ruthenium, osmium, cobalt, rhodium, or iridium. The chiral compound can be used as a catalyst, preferably in an asymmetric transfer hydrogenation process.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: February 8, 2011
    Assignee: DSM IP Assets B.V.
    Inventors: Johannes Gerardus (Hans) De Vries, Gerardus Karel Maria Verzijl, Andreas Hendrikus Maria De Vries, Vincent Ritleng, Adeline Marie Joseèphe Voelklin