Patents by Inventor Thomas LEISCHNER

Thomas LEISCHNER 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).

  • PROCESS COMPRISING THE USE OF NEW IRIDIUM CATALYSTS FOR ENANTIOSELECTIVE HYDROGENATION OF 4-SUBSTITUTED 1,2-DIHYDROQUINOLINES
    Publication number: 20220324810
    Abstract: New iridium catalysts for enantioselective hydrogenation of 4-substituted 1,2-dihydroquinolines The invention relates to a process for preparing optically active 4-substituted 1, 2, 3, 4-tetrahydroquinolines (la, lb) comprising enantioselective hydrogenation of the corresponding 4-substituted 1,2-dihydroquinolines in presence of a chiral iridium (P,N)-ligand catalyst.
    Type: Application
    Filed: September 22, 2020
    Publication date: October 13, 2022
    Inventors: Christoph SCHOTES, Matthias BELLER, Kathrin JUNGE, Weiping LIU, Jacob SCHNEEKOENIG, Thomas LEISCHNER
  • IMPROVED ENANTIOSELECTIVE HYDROGENATION OF 4-SUBSTITUTED 1,2-DIHYDROQUINOLINES IN PRESENCE OF A CHIRAL IRIDIUM CATALYST AND AN ADDITIVE
    Publication number: 20220306583
    Abstract: The invention relates to a process for preparing optically active 4-substituted 1,2,3,4-tetrahydroquinolines comprising enantioselective hydrogenation of the corresponding 4-substituted 1,2-dihydroquinolines in presence of a chiral iridium (P,N)-ligand catalyst and an additive.
    Type: Application
    Filed: September 22, 2020
    Publication date: September 29, 2022
    Inventors: Christoph SCHOTES, Matthias BELLER, Kathrin JUNGE, Weiping LIU, Jacob SCHNEEKOENIG, Thomas LEISCHNER