Patents by Inventor Jason S. Kingsbury

Jason S. Kingsbury 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).

  • Recyclable chiral metathesis catalysts
    Patent number: 6939982
    Abstract: The present invention relates to chiral metal catalysts for stereoselective olefin metathesis reactions, which are recyclable and reusable in such metathesis reactions. The chiral metal-based metathesis catalysts of the invention comprise multidentate optically active or racemic chiral ligands that enable their use in asymmetric synthetic processes, such as for example, in ring-opening and ring-closing metathesis reactions (ROM and RCM, respectively) of alkenes. The catalysts of the invention are organometallic complexes of multivalent metals comprising one or more chiral bidentate ligands that exhibit superior reactivity and stereoselectivity properties. The present invention also provides methods of making such catalysts and methods for utilizing them in catalyzing stereoselective olefin metathesis reactions to provide asymmetric products in relatively high enantiomeric or stereoisomeric excess.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: September 6, 2005
    Assignee: The Trustees of Boston College
    Inventors: Amir H. Hoveyda, Joshua Van Veldhuizen, Steven B. Garber, Jason S. Kingsbury
  • Recyclable chiral metathesis catalysts
    Publication number: 20040019212
    Abstract: The present invention relates to chiral metal catalysts for stereoselective olefin metathesis reactions, which are recyclable and reusable in such metathesis reactions. The chiral metal-based metathesis catalysts of the invention comprise multidentate optically active or racemic chiral ligands that enable their use in asymmetric synthetic processes, such as for example, in ring-opening and ring-closing metathesis reactions (ROM and RCM, respectively) of alkenes. The catalysts of the invention are organometallic complexes of multivalent metals comprising one or more chiral bidentate ligands that exhibit superior reactivity and stereoselectivity properties. The present invention also provides methods of making such catalysts and methods for utilizing them in catalyzing stereoselective olefin metathesis reactions to provide asymmetric products in relatively high enantiomeric or stereoisomeric excess.
    Type: Application
    Filed: May 12, 2003
    Publication date: January 29, 2004
    Applicant: Trustees of Boston College
    Inventors: Amir H. Hoveyda, Joshua Van Veldhuizen, Steven B. Garber, Jason S. Kingsbury