Patents Assigned to Dexlechem GMBH
  • Patent number: 9758457
    Abstract: The invention relates to a method for converting a precatalyst complex to an active catalyst complex, wherein the precatalyst complex and the active catalyst complex comprise a ruthenium atom and an optically active ligand that is insoluble in water, and the active catalyst complex furthermore comprises a monohydride and a water molecule. The method comprises the steps of providing water as an activation solvent system with a pH value equal or below 2, and solving said precatalyst complex, an acid, and hydrogen therein. The invention further relates to a method for manufacturing a catalyst composition, a method for hydrogenating a substrate molecule and a reaction mixture.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: September 12, 2017
    Assignee: DEXLECHEM GMBH
    Inventor: Sonja Jost
  • Publication number: 20160355454
    Abstract: The invention relates to a method for converting a precatalyst complex to an active catalyst complex, wherein the precatalyst complex and the active catalyst complex comprise a ruthenium atom and an optically active ligand that is insoluble in water, and the active catalyst complex furthermore comprises a monohydride and a water molecule. The method comprises the steps of providing water as an activation solvent system with a pH value equal or below 2, and solving said precatalyst complex, an acid, and hydrogen therein. The invention further relates to a method for manufacturing a catalyst composition, a method for hydrogenating a substrate molecule and a reaction mixture.
    Type: Application
    Filed: August 23, 2016
    Publication date: December 8, 2016
    Applicant: Dexlechem GMBH
    Inventor: Sonja JOST
  • Patent number: 9433937
    Abstract: The invention relates to a method for converting a precatalyst complex to an active catalyst complex, wherein the precatalyst complex and the active catalyst complex comprise a ruthenium atom and an optically active ligand that is insoluble in water, and the active catalyst complex furthermore comprises a monohydride and a water molecule. The method comprises the steps of providing water as an activation solvent system with a pH value equal or below 2, and solving said precatalyst complex, an acid, and hydrogen therein. The invention further relates to a method for manufacturing a catalyst composition, a method for hydrogenating a substrate molecule and a reaction mixture.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: September 6, 2016
    Assignee: DEXLECHEM GMBH
    Inventor: Sonja Jost
  • Patent number: 9284258
    Abstract: Disclosed is a novel process for the reduction of nitro groups to amino derivatives, based on the use of trichlorosilane and an organic base, which is efficient from the chemical standpoint and of wide general applicability.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: March 15, 2016
    Assignee: DEXLECHEM GMBH
    Inventors: Maurizio Benaglia, Martina Bonsignore
  • Publication number: 20160008803
    Abstract: The invention relates to a method for converting a precatalyst complex to an active catalyst complex, wherein the precatalyst complex and the active catalyst complex comprise a ruthenium atom and an optically active ligand that is insoluble in water, and the active catalyst complex furthermore comprises a monohydride and a water molecule. The method comprises the steps of providing water as an activation solvent system with a pH value equal or below 2, and solving said precatalyst complex, an acid, and hydrogen therein. The invention further relates to a method for manufacturing a catalyst composition, a method for hydrogenating a substrate molecule and a reaction mixture.
    Type: Application
    Filed: March 5, 2014
    Publication date: January 14, 2016
    Applicant: Dexlechem GMBH
    Inventor: Sonja JOST
  • Publication number: 20150232412
    Abstract: Disclosed is a novel process for the reduction of nitro groups to amino derivatives, based on the use of trichlorosilane and an organic base, which is efficient from the chemical standpoint and of wide general applicability.
    Type: Application
    Filed: September 5, 2013
    Publication date: August 20, 2015
    Applicant: Dexlechem GMBH
    Inventors: Maurizio Benaglia, Martina Bonsignore