Patents by Inventor Arne Gerlach

Arne Gerlach 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 for preparing 2,2-difluoroethylamine by hydrogenating 1,1-difluoro-2-nitroethane
    Patent number: 8754262
    Abstract: Process for preparing 2,2-difluoroethylamine, characterized in that 1,1-difluoro-2-nitroethane is subjected to a catalytic hydrogenation.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: June 17, 2014
    Assignee: Bayer CropScience AG
    Inventors: Stefan Antons, Norbert Lui, Arne Gerlach
  • Process for Preparing 2,2-difluoroethylamine by Hydrogenating 1,1-difluoro-2-nitroethane
    Publication number: 20110082318
    Abstract: Process for preparing 2,2-difluoroethylamine, characterized in that 1,1-difluoro-2-nitroethane is subjected to a catalytic hydrogenation.
    Type: Application
    Filed: October 6, 2010
    Publication date: April 7, 2011
    Applicant: Bayer CropScience AG
    Inventors: Stefan ANTONS, Norbert Lui, Arne Gerlach
  • Process for preparing enantiomerically enriched 2-alkoxy-3-phenylpropionic acids
    Patent number: 7429676
    Abstract: The present invention relates to a process for preparing enantiomerically enriched, optionally substituted 2-alkoxy-3-phenylpropionic acids by asymmetrically hydrogenating alkoxycinnamic acids.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: September 30, 2008
    Assignee: Saltigo GmbH
    Inventors: Michael Woltering, Tanasri Bunlaksananusorn, Arne Gerlach
  • Process for preparing enantiomerically enriched 2-fluorocarboxylic esters
    Publication number: 20060167292
    Abstract: The present invention relates to a process for preparing enantiomerically enriched 2-fluorocarboxylic esters, in particular methyl (R)-2-fluoropropionate, from (S)-2-sulphonyloxycarboxylic esters and potassium fluoride.
    Type: Application
    Filed: December 13, 2005
    Publication date: July 27, 2006
    Inventor: Arne Gerlach
  • Process for preparing phosphites and transition metal complexes
    Patent number: 6992201
    Abstract: The present invention relates to a process for preparing phosphites and their transition metal complexes and also to their use in catalytic processes.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: January 31, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Scholz, Erasmus Vogl, Arne Gerlach, Jorma Hassfeld
  • Preparation of ytterbium(III) beta-diketonates
    Publication number: 20060020121
    Abstract: The invention relates to a process for preparing ytterbium(III) ?-diketonates, especially ytterbium(III) acetylacetonate, to the ytterbium(III) ?-diketonates prepared by this process and to the use thereof as catalysts.
    Type: Application
    Filed: July 15, 2005
    Publication date: January 26, 2006
    Inventors: Arne Gerlach, Torsten Groth, Steffen Hofacker
  • Polyamino acids and method for producing the same
    Publication number: 20050119445
    Abstract: The invention relates to polyamino acids, to a method for producing the same and to their use as catalysts for enantioselective epoxidation of ?,?-unsaturated enons and ?,?-unsaturated sulfones.
    Type: Application
    Filed: February 14, 2003
    Publication date: June 2, 2005
    Inventors: Thomas Geller, Arne Gerlach, Anton Vidal-Ferran, Hans-Christian Militzer, Reinhard Langer
  • Supported ferrocene-based catalysts for selective aldehyde hydrogenation
    Patent number: 6841499
    Abstract: A supported catalyst comprises a cationic rhodium(I) complex of the formula wherein R1 and R2 are the same or different hydrocarbon groups of up to 30 C atoms, or R1 and R2 are linked to form a ring, and a heterogeneous support medium that provides anionic binding sites. Such a complex is particularly useful as a catalyst in a process of hydrogenating an aldehyde to produce the corresponding primary alcohol.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: January 11, 2005
    Assignee: Chirotech Technology Limited
    Inventors: Mark Joseph Burk, Arne Gerlach
  • Process for preparing phosphites and transition metal complexes
    Publication number: 20040116726
    Abstract: The present invention relates to a process for preparing phosphites and their transition metal complexes and also to their use in catalytic processes.
    Type: Application
    Filed: August 26, 2003
    Publication date: June 17, 2004
    Inventors: Ulrich Scholz, Erasmis Vogl, Arne Gerlach, Jorma Habfeld
  • Process for preparing MeO-Peg-protected dihydroquinine or dihydroquinidine derivatives, new dihydroquinine or dihydroquinidine derivatives and their use
    Patent number: 6326327
    Abstract: It is known that dihydroquinine or dihydroquinidine derivatives can be successfully used as ligands in the enantioselective dihydroxylation. The new disclosed ligand systems based on dihydroquinine/quinidine, unlike the prior art ligands, can be recycled after enantioselective dihydroxylation by precipitating and filtering the reaction medium, and be reused in the reaction medium. Also disclosed are the ligand systems (I) and (IV), process for preparing the same and their use in the enantioselective dihydroxiation of double bonds.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: December 4, 2001
    Assignee: Degussa AG
    Inventors: Carsten Bolm, Arne Gerlach, Karlheinz Drauz, Andreas Bommarius
  • Process for preparing MeO-Peg-protected dihydroquinine or dihydroquinidine derivatives, new dihydroquinine or dihydroquinidine derivatives and their use
    Patent number: 6180551
    Abstract: Process for the formation of MeO-Peg-protected dihydroquinine or dihydro quinindine derivatives, new dihydroquinine-or dihyroquinidine derivatives as well as the use thereof. It is known that dihydroquinine or dihydroquinidine derivatives can be successfully used as ligands in the enantioselective dihydroxylation. The new disclosed ligand systems based on dihydroquinine/quinidine, unlike the prior art ligands, can be recycled after enantioselective dihydroxylation by precipitating and filtering the reaction medium, and be reused in the reaction medium. Also disclosed are the ligand systems (I) and (IV), process for preparing the same and their use in the enantioselective dihydroxiation of double bonds.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: January 30, 2001
    Assignee: Degussa AG
    Inventors: Carsten Bolm, Arne Gerlach, Karlheinz Drauz, Andreas Bommarius
  • Chiral ligands for asymmetric catalysis
    Patent number: 6172249
    Abstract: An enantiomerically enriched compound of formula (4) or the opposite enantiomer thereof, wherein R is C1-10 alkyl. This compound, in the form of a transition metal complex, is useful as a catalyst for stereoselective hydrogenation.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: January 9, 2001
    Assignee: Chirotech Technology, Ltd.
    Inventors: Ulrich Berens, Mark Joseph Burk, Arne Gerlach