Patents by Inventor Thomas Riermeier

Thomas Riermeier 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).

  • Publication number: 20070213540
    Abstract: The present invention relates to a process for the hydrogenation of an imines with hydrogen in the presence of iridium catalysts. In particular, the present invention relates to a process for the hydrogenation of imines with hydrogen under elevated pressure in the presence of an iridium catalyst and with or without an inert solvent, wherein the reaction mixture comprises a phosphonium chloride, bromide or iodide in the presence of an acid, which can be an organic or inorganic acid soluble or insoluble in the reaction mixture. Suitable imines are especially those that contain at least one group. If the groups are substituted asymetrically and are thus compounds having a prochiral ketitine group, it is possible in the process according to the invention for mixtures of optical isomers or pure optical isomers to be formed if enantioselective or diastereoselective iridium catatalysts are used.
    Type: Application
    Filed: March 9, 2006
    Publication date: September 13, 2007
    Applicant: Degussa AG
    Inventors: Juan Jose Perea, Thomas Riermeier, Axel Monsees, Renat Kadyrov
  • Publication number: 20070197799
    Abstract: In the present application protection is sought for compounds of the general formula (I) as ligands for reactions catalysed by transition metals. The preparation thereof and use thereof, in particular for the preparation of ?-amino acids, is also discussed.
    Type: Application
    Filed: September 24, 2005
    Publication date: August 23, 2007
    Applicant: DEGUSSA GmbH
    Inventors: Jens Holz, Armin Borner, Juan Almena Perea, Renat Kadyrov, Axel Monsees, Thomas Riermeier
  • Publication number: 20070179301
    Abstract: The present invention relates to ligands of the general formula (I). In addition, a process for the production thereof and the use thereof are demonstrated.
    Type: Application
    Filed: December 12, 2006
    Publication date: August 2, 2007
    Applicant: DEGUSSA AG
    Inventors: Armin Boerner, Jens Holz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Carsten Schneider, Uwe Dingerdissen, Karlheinz Drauz
  • Publication number: 20070149781
    Abstract: The present invention is directed at a process for preparing enantiomerically enriched compounds of the general formula (I). Compounds of the type shown are employed in catalyst systems.
    Type: Application
    Filed: October 29, 2004
    Publication date: June 28, 2007
    Applicant: Degussa AG
    Inventors: Thomas Riermeier, Axel Monsees, Juan Almena Perea, Renat Kadyrov, Battsengel Gotov, Werner Zeiss, Iris Nagl, Armin Borner, Jens Holz, Karlheinz Drauz, Wilfried Meichelbock
  • Patent number: 7230134
    Abstract: This application claims the benefit of German priority Application No. 10138140.9, filed on Aug. 9, 2001, and International Application No. PCT/EP02/08748, filed on Aug. 6, 2002. The invention relates to the production of amines by the reaction of aldehydes or ketones with ammonia or primary or secondary amines in the presence of a hydrogen-donor and the presence of homogeneous metal catalysts of the eighth sub-group under mild conditions.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: June 12, 2007
    Assignee: Degussa AG
    Inventors: Armin Borner, Uwe Dingerdissen, Renat Kadyrov, Thomas Riermeier, Vitali Tararov
  • Publication number: 20070123733
    Abstract: The present invention relates to ligands of the general formula (I). In addition, a process for the production thereof and the use thereof are demonstrated.
    Type: Application
    Filed: December 12, 2006
    Publication date: May 31, 2007
    Applicant: DEGUSSA AG
    Inventors: Armin BOERNER, Jens Holz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Carsten Schneider, Uwe Dingerdissen, Karlheinz Drauz
  • Publication number: 20070123707
    Abstract: The present invention relates to novel nitrogen—containing monodentate phosphane ligands of formula (I) and to their use in catalytic reactions, especially in the improvement of haloaromatic compounds.
    Type: Application
    Filed: May 3, 2004
    Publication date: May 31, 2007
    Applicant: Degussa AG
    Inventors: Alexander Zapf, Mark Sundermeier, Ralf Jackstell, Matthias Belller, Thomas Riermeier, Axel Monsees, Uwe Dingerdissen
  • Patent number: 7081544
    Abstract: The invention relates to novel chiral ligands of formula (I), the production thereof and the use of the same in catalytic reactions.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: July 25, 2006
    Assignee: Degussa AG
    Inventors: Matthias Beller, Kathrin Junge, Axel Monsees, Thomas Riermeier, Harald Trauthwein
  • Patent number: 7015342
    Abstract: The invention relates to ferrocenyl ligands of general formula (II), the Sfc,S-enantiomer or the Rfc,R-enantiomer of the ferrocenyl ligands of formula (II) being enriched, and a method for producing such ligands.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: March 21, 2006
    Assignee: Degussa AG
    Inventors: Paul Knochel, Matthias Lotz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Juan Jose Almena Perea
  • Publication number: 20060058178
    Abstract: The present invention is directed to P-functionalized amines of nitrogen-containing compounds and to catalysts prepared by combining these amines with transition metals. The catalysts are especially useful for refining haloaromatics.
    Type: Application
    Filed: November 21, 2002
    Publication date: March 16, 2006
    Inventors: Rhett Kempe, Thomas Schareina, Axel Monsees, Thomas Riermeier
  • Patent number: 7009065
    Abstract: The invention relates to bidentate organophosphorous ferrocenyl ligands containing ligands of formula (I), to their complex compounds and to their utilization in catalytic processes.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: March 7, 2006
    Assignee: Degussa AG
    Inventors: Paul Knochel, Matthias Lotz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Juan Jose Almena Perea
  • Publication number: 20050240007
    Abstract: The invention relates to ferrocenyl ligands of general formula (II), the Sfc,S-enantiomer or the Rfc,R-enantiomer of the ferrocenyl ligands of formula (II) being enriched, and a method for producing such ligands.
    Type: Application
    Filed: April 17, 2003
    Publication date: October 27, 2005
    Inventors: Paul Knochel, Matthias Lotz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Juan Almena Perea
  • Publication number: 20050234253
    Abstract: The invention relates to bidentate organophosphorous ferrocenyl ligands containing ligands of formula (I), to their complex compounds and to their utilization in catalytic processes.
    Type: Application
    Filed: March 10, 2003
    Publication date: October 20, 2005
    Applicant: Degussa AG
    Inventors: Paul Knochel, Matthias Lotz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Juan Almena Perea
  • Publication number: 20050209455
    Abstract: The present invention relates to ligands of the general formula (I). In addition, a process for the production thereof and the use thereof are demonstrated.
    Type: Application
    Filed: March 3, 2003
    Publication date: September 22, 2005
    Inventors: Armin Boerner, Jens Holz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Carsten Schneider, Uwe Dingerdissen, Karlheinz Drauz
  • Patent number: 6884887
    Abstract: The invention relates to the preparation of chiral or achiral amines by reaction of aldehydes or ketones with ammonia or primary or secondary amines in the presence of hydrogen and in the presence of homogeneous metal catalysts under mild conditions. Metal catalysts which can be used are complexes of late transition metals with chiral or achiral phosphorus-containing ligands.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: April 26, 2005
    Assignee: Degussa AG
    Inventors: Thomas Riermeier, Karl-Josef Haack, Uwe Dingerdissen, Armin Boerner, Vitali Tararov, Renat Kadyrov
  • Publication number: 20050075514
    Abstract: Many inorganic substrates can be oxidized with a peroxo compound, such as hydrogen peroxide. In processes which are already known, pure alkylrhenium oxides of the formula RaRebOcLd are employed. Catalyst compositions such as are obtainable from the reaction of an oxorhenium compound of the formula ReOmAn with an organylating agent, in particular a Grignard compound, without the preparation process comprising an expensive sublimation, crystallization or distillation, can be employed with the same activity in the oxidation reactions. In addition to oxidation processes, catalyst compositions are disclosed.
    Type: Application
    Filed: September 10, 2004
    Publication date: April 7, 2005
    Inventors: Thomas Riermeier, Manfred Hoff, Werner Zeiss, Uwe Wahren, Karlheinz Drauz
  • Publication number: 20040267051
    Abstract: The invention relates to the production of amines by the reaction of aldehydes or ketones with ammonia or primary or secondary amines in the presence of a hydrogen-donor and the presence of homogeneous metal catalysts of the eighth sub-group under mild conditions.
    Type: Application
    Filed: August 18, 2004
    Publication date: December 30, 2004
    Inventors: Amin Boerner, Uwe Dingerdissen, Renat Kaxyrov, Thomas Riermeier, Vitali Tararov
  • Publication number: 20040249184
    Abstract: The invention relates to novel chiral ligands of formula (I), the production thereof and the use of the same in catalytic reactions.
    Type: Application
    Filed: April 8, 2004
    Publication date: December 9, 2004
    Inventors: Matthias Beller, Kathrin Junge, Axel Monsees, Thomas Riermeier, Harald Trauthwein
  • Publication number: 20040013565
    Abstract: The invention relates to a scalable autoclave array for studying chemical reactions which consists of autoclave modules, which each consist of a reactor shell hermetically fastened over a reaction vessel and which can be filled with gas independently of one another via controllable autoclave valves from a pressure regulating chamber, which contains a pressure sensor and is connected via least one controllable valve to at least one gas supply and at least one gas outlet.
    Type: Application
    Filed: July 21, 2003
    Publication date: January 22, 2004
    Inventors: Boris E Bosch, Thomas Riermeier, Uwe Dingerdissen, Gerhard Geiss, Norbert Stoll, Martin Krohn, Robert Lemke
  • Publication number: 20030171544
    Abstract: The invention relates to a novel alcohol dehydrogenase (ADHF1) from Pseudomonas fluorescens (DSM 50106) and to functional variants thereof and to a process for selective reduction of ketones to the corresponding alcohols by using such alcohol dehydrogenases.
    Type: Application
    Filed: March 13, 2002
    Publication date: September 11, 2003
    Applicant: DEGUSSA AG
    Inventors: Thomas Riermeier, Uwe Bornscheuer, Josef Altenbuchner, Petra Hildebrandt