Patents by Inventor Hans-Christian Militzer

Hans-Christian Militzer 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).

  • Polyamino acid-catalyzed process for the enantioselective epoxidation of alpha,beta-unsaturated enones and alpha,beta-unsaturated sulfones
    Publication number: 20050027131
    Abstract: The invention relates to a novel process that makes it possible to epoxidize ?,?-unsaturated enones or ?,?-unsaturated sulfones with high conversions and enantiomeric excesses in a two-phase system without addition of water in the presence of an organic solvent, a base, an oxidant, a diastereomer- and enantiomer-enriched homo-polyamino acid that has not been separately preactivated as catalyst, and a specific phase-transfer catalyst as cocatalyst.
    Type: Application
    Filed: August 25, 2004
    Publication date: February 3, 2005
    Inventors: Thomas Geller, Christa Kruger, Hans-Christian Militzer
  • Polyamino acid-catalyzed process for the enantioselective epoxidation of &agr;, &bgr;-unsaturated enones and &agr;, &bgr;-unsaturated sulfones
    Patent number: 6822053
    Abstract: The invention relates to a novel process that makes it possible to epoxidize &agr;,&bgr;-unsaturated enones or &agr;,&bgr;-unsaturated sulfones with high conversions and enantiomeric excesses in a two-phase system without addition of water in the presence of an organic solvent, a base, an oxidant, a diastereomer- and enantiomer-enriched homo-polyamino acid that has not been separately preactivated as catalyst, and a specific phase-transfer catalyst as cocatalyst.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: November 23, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Geller, Christa Maria Krüger, Hans-Christian Militzer
  • Preparation of carbonyl compounds from alcohols
    Patent number: 6790997
    Abstract: The invention relates to a process for the preparation of carbonyl compounds by the oxidation of alcohols in the presence of osmium compounds as catalysts in water or a solvent mixture containing water.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: September 14, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Markus Eckert, Hans-Christian Militzer, Matthias Beller, Christian Döbler, Gerald Mehltretter, Uta Sundermeier
  • Polyamino acid-catalyzed process for the enantioselective epoixdation of &agr;,&bgr;-unsaturated enones and &agr;,&bgr;-unsaturated sulfones
    Patent number: 6770766
    Abstract: The invention relates to a novel process that makes it possible to epoxidize &agr;,&bgr;-unsaturated enones or &agr;,&bgr;-unsaturated sulfones with high conversions and enantiomeric excesses in the presence of a water-soluble base, an oxidant, a diastereomer- and enantiomer-enriched homo-polyamino acid as catalyst, water, an organic solvent that is immiscible or has only limited miscibility with water, and a specific phase-transfer catalyst as cocatalyst.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: August 3, 2004
    Assignee: Bayer Chemicals AG
    Inventors: Thomas Geller, Christa Maria Krüger, Hans-Christian Militzer
  • Chiral monophosphorus compounds and their transition metal complexes
    Publication number: 20040127430
    Abstract: The present invention relates to chiral monophosphorus compounds and their transition metal complexes, to a process for preparing chiral monophosphorus compounds and their transition metal complexes and also to their use in asymmetric syntheses.
    Type: Application
    Filed: September 11, 2003
    Publication date: July 1, 2004
    Inventors: Benjamin Meseguer, Hans-Christian Militzer, Sergio Castillon, Carmen Claver, Ester Guiu
  • Polyamino acid-catalyzed process for the enantioselective epoxidation of &agr;,&bgr;-unsaturated enones and &agr;,&bgr;-unsaturated sulfones
    Patent number: 6700004
    Abstract: The invention relates to a novel process that makes it possible to epoxidize &agr;,&bgr;-unsaturated enones or &agr;,&bgr;-unsaturated sulfones with high conversions and enantiomeric excesses in the presence of a water-soluble base, an oxidant, water, an organic solvent that is immiscible or has only limited miscibility with water, a preactivated diastereomer- and enantiomer-enriched homo-polyamino acid as catalyst, and a specific phase-transfer catalyst as cocatalyst.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: March 2, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Geller, Christa Maria Krüger, Hans-Christian Militzer
  • Process for stereoselectively reducing 4-aryl-4-oxobutanoic acid derivatives
    Publication number: 20040030181
    Abstract: The present invention relates to a process for preparing stereoisomerically enriched 4-aryl-4-hydroxybutanoic acid derivatives by reducing 4-aryl-4-ketobutanoic acid derivatives in the presence of ruthenium-containing catalysts.
    Type: Application
    Filed: June 9, 2003
    Publication date: February 12, 2004
    Inventors: Hans-Christian Militzer, Boris Bosch, Markus Eckert, Benjamin Meseguer
  • Process for preparing tertiary phosphines
    Publication number: 20030229240
    Abstract: The invention relates to a process for synthesizing tertiary phosphines by reacting halophosphines with organomagnesium compounds in the presence of copper compounds and optionally of salts.
    Type: Application
    Filed: April 17, 2003
    Publication date: December 11, 2003
    Inventors: Florian Rampf, Hans-Christian Militzer
  • Process for reducing 3-heteroaryl-3-oxopropionic acid derivatives
    Publication number: 20030225274
    Abstract: The present invention relates to a process for preparing stereoisomerically enriched 3-heteroaryl-3-hydroxycarboxylic esters by reducing 3-heteroaryl-3-oxocarboxylic esters in the presence of ruthenium-containing catalysts.
    Type: Application
    Filed: February 27, 2003
    Publication date: December 4, 2003
    Inventors: Boris Bosch, Markus Eckert, Hans-Christian Militzer, Claus Dreisbach
  • Complexes of N-heterocyclic carbenes and the use thereof
    Publication number: 20030149273
    Abstract: The present invention relates to a process for preparing polyaryl compounds by coupling aryl halides or aryl sulphonates and reactive aryl compounds in the presence of novel transition metal complexes of N-heterocyclic carbenes which, just like the N-heterocyclic carbenes themselves and the salts from which they are derived, form part of the invention.
    Type: Application
    Filed: October 24, 2002
    Publication date: August 7, 2003
    Inventors: Hans-Christian Militzer, Ulrich Scholz, Wolfgang A. Herrmann, Christian Gstottmayr
  • Chiral monophosphorus compounds
    Publication number: 20030119664
    Abstract: The present invention relates to catalysts comprising chiral monophosphorus compounds and their use, the chiral monophosphorus compounds themselves and also their precursors.
    Type: Application
    Filed: September 27, 2002
    Publication date: June 26, 2003
    Inventors: Claus Dreisbach, Benjamin Meseguer, Thomas Prinz, Ulrich Scholz, Hans-Christian Militzer, Friederike Agel, Birgit Driessen-Holscher
  • Method for carrying out parallel reactions
    Publication number: 20030118483
    Abstract: A method for carrying out parallel reactions in a reactor having a plurality of individual reaction chambers under elevated pressure, in which the chambers are filled in parallel or series with liquid and/or solid reactants, the chambers are sealed using a common seal, subsequently pressurized and the reaction is carried out. An individual lid with a plurality of self-closing openings is used as the seal for the chambers, at least one opening being assigned to each chamber.
    Type: Application
    Filed: October 22, 2002
    Publication date: June 26, 2003
    Inventors: Hans-Christian Militzer, Benjamin Meseguer, Oliver Kuhn
  • Polyamino acid-catalyzed process for the enantioselective epoxidation of alpha,beta-unsaturated enones and alpha,beta-unsaturated sulfones
    Publication number: 20030087401
    Abstract: The invention relates to a novel process that makes it possible to epoxidize &agr;,&bgr;-unsaturated enones or &agr;,&bgr;-unsaturated sulfones with high conversions and enantiomeric excesses in the presence of a water-soluble base, an oxidant, a diastereomer- and enantiomer-enriched homo-polyamino acid as catalyst, water, an organic solvent that is immiscible or has only limited miscibility with water, and a specific phase-transfer catalyst as cocatalyst.
    Type: Application
    Filed: July 24, 2002
    Publication date: May 8, 2003
    Inventors: Thomas Geller, Christa Maria Kruger, Hans-Christian Militzer
  • Polyamino acid-catalyzed process for the enantioselective epoxidation of alpha,beta-unsaturated enones and alpha,beta-unsaturated sulfones
    Publication number: 20030064486
    Abstract: The invention relates to a novel process that makes it possible to epoxidize &agr;,&bgr;-unsaturated enones or &agr;,&bgr;-unsaturated sulfones with high conversions and enantiomeric excesses in the presence of a water-soluble base, an oxidant, water, an organic solvent that is immiscible or has only limited miscibility with water, a preactivated diastereomer- and enantiomer-enriched homo-polyamino acid as catalyst, and a specific phase-transfer catalyst as cocatalyst.
    Type: Application
    Filed: July 24, 2002
    Publication date: April 3, 2003
    Inventors: Thomas Geller, Christa Maria Kruger, Hans-Christian Militzer
  • Preparation of carbonyl compounds from alcohols
    Publication number: 20030055291
    Abstract: The invention relates to a process for the preparation of carbonyl compounds by the oxidation of alcohols in the presence of osmium compounds as catalysts in water or a solvent mixture containing water.
    Type: Application
    Filed: July 23, 2002
    Publication date: March 20, 2003
    Inventors: Markus Eckert, Hans-Christian Militzer, Matthias Beller, Christian Dobler, Gerald Mehltretter, Uta Sundermeier
  • Polyamino acid-catalyzed process for the enantioselective epoxidation of alpha, beta-unsaturated enones and alpha, beta-unsaturated sulfones
    Publication number: 20030050486
    Abstract: The invention relates to a novel process that makes it possible to epoxidize &agr;,&bgr;-unsaturated enones or &agr;,&bgr;-unsaturated sulfones with high conversions and enantiomeric excesses in a two-phase system without addition of water in the presence of an organic solvent, a base, an oxidant, a diastereomer- and enantiomer-enriched homo-polyamino acid that has not been separately preactivated as catalyst, and a specific phase-transfer catalyst as cocatalyst.
    Type: Application
    Filed: July 24, 2002
    Publication date: March 13, 2003
    Inventors: Thomas Geller, Christa Maria Kruger, Hans-Christian Militzer
  • Use of 5-amino-pyrazol-derivatives for combating micro-organisms
    Patent number: 6444612
    Abstract: A method of controlling a plant disease caused by a fungus comprising applying a 5-amino-pyrazole of the formula wherein, R1, R2, R3, R4, R5 and Y are as defined in the specification.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: September 3, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Markus Heil, Thomas Bretschneider, Hans-Christian Militzer, Astrid Mauler-Machnik, Klaus Stenzel
  • Process for preparing aryl compounds
    Publication number: 20020077250
    Abstract: The present invention relates to an advantageous preparation of aryl compounds by cross-coupling reaction of a substituted aryl halide compound with a Grignard reagent in the presence of a nickel catalyst wherein the substituted aryl compounds and a novel nickel catalyst are initially placed in a reaction vessel and the Grignard reagent is metered in at the reaction temperature.
    Type: Application
    Filed: September 24, 2001
    Publication date: June 20, 2002
    Inventors: Markus Eckert, Guido Giffels, Hans-Christian Militzer, Thomas Prinz
  • Phenylacetic acid heterocyclyl amides having an insecticidal effect
    Patent number: 6403622
    Abstract: Novel phenylacetic acid heterocyclyl amides of the formula in which R1, R2, R3, R4, A, X and n are as defined in the description, a process for preparing these novel compounds and their use for controlling undesirable microorganisms and animal pests. Novel intermediates of the formula and a plurality of processes for their preparation.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: June 11, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Markus Heil, Hans-Christian Militzer, Thomas Bretschneider, Bernd Alig, Astrid Mauler-Machnik, Klaus Stenzel, Ulrike Wachendorff-Neumann
  • High enantio-selective process for producing pure enantiomeric cyclopentane and cyclopentene-(.beta.)-amino acids
    Patent number: 5962724
    Abstract: The present invention relates to a highly enantioselective process for the preparation of enantiomerically pure cyclopentane- and -pentene .beta.-amino acids of the general formula (I) ##STR1## in which A and L, A and D or E and L, D and E, R.sup.2, R.sup.3, T and R.sup.1 have the meaning given in the description.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: October 5, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Mittendorf, Hermann Arold, Peter Fey, Michael Matzke, Hans-Christian Militzer, Klaus-Helmut Mohrs