Patents by Inventor Benjamin Meseguer

Benjamin Meseguer 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 stereoselectively reducing 4-aryl-4-oxobutanoic acid derivatives
    Patent number: 8034961
    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: Grant
    Filed: December 17, 2007
    Date of Patent: October 11, 2011
    Assignee: LANXESS Deutschland GmbH
    Inventors: Hans-Christian Militzer, Boris Bosch, Markus Eckert, Benjamin Meseguer
  • Chiral phosphanes for use in asymmetric syntheses
    Patent number: 7981827
    Abstract: The present invention relates to biarylbisphosphines and intermediates thereof. Furthermore, the scope of the invention encompasses catalysts which can be prepared from the bisarylphosphines and their use in asymmetric syntheses.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: July 19, 2011
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Dieter Arlt, Benjamin Meseguer
  • CHIRAL PHOSPHANES FOR USE IN ASYMMETRIC SYNTHESES
    Publication number: 20100099902
    Abstract: The present invention relates to biarylbisphosphines and intermediates thereof. Furthermore, the scope of the invention encompasses catalysts which can be prepared from the bisarylphosphines and their use in asymmetric syntheses.
    Type: Application
    Filed: October 14, 2009
    Publication date: April 22, 2010
    Applicant: BOEHRINGER INGELHEIM INTERNATIONAL GMBH
    Inventors: Dieter Arlt, Benjamin Meseguer
  • Chiral phosphanes for use in asymmetric syntheses
    Patent number: 7625443
    Abstract: The present invention relates to biarylbisphosphines and intermediates thereof. Furthermore, the scope of the invention encompasses catalysts which can be prepared from the bisarylphosphines and their use in asymmetric syntheses.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: December 1, 2009
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Dieter Arlt, Benjamin Meseguer
  • Chiral ligands for application in asymmetric syntheses
    Patent number: 7396947
    Abstract: The present invention relates to biarylbisphosphines and intermediates thereof. The scope of the invention further encompasses catalysts preparable from the biarylbisphosphines and their use in asymmetric syntheses.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: July 8, 2008
    Assignee: LANXESS Deutschland GmbH
    Inventors: Benjamin Meseguer, Dieter Arlt
  • Process for stereoselectively reducing 4-ARYL-4-oxobutanoic acid derivatives
    Publication number: 20080103316
    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: December 17, 2007
    Publication date: May 1, 2008
    Inventors: Hans-Christian Militzer, Boris Bosch, Markus Eckert, Benjamin Meseguer
  • Process for stereoselectively reducing 4-aryl-4-oxobutanoic acid derivatives
    Patent number: 7329766
    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: Grant
    Filed: June 15, 2005
    Date of Patent: February 12, 2008
    Assignee: Lanxess Deutschland GmbH
    Inventors: Hans-Christian Militzer, Boris Bosch, Markus Eckert, Benjamin Meseguer
  • Chiral diphosphorus compounds and their transition metal complexes
    Publication number: 20070155971
    Abstract: The present invention relates to chiral diphosphorus compounds and their transition metal complexes, to a process for preparing chiral diphosphorus compounds and their transition metal complexes and also to their use in asymmetric syntheses.
    Type: Application
    Filed: February 16, 2007
    Publication date: July 5, 2007
    Inventors: Benjamin Meseguer, Hans-Christian Militzer, Sergio Castillon, Carmen Claver, Yolanda Diaz, Mohamed Aghmiz, Ester Guiu, Ali Aghmiz, Anna Masdeu
  • Chiral diphosphorus compounds and their transition metal complexes
    Patent number: 7193092
    Abstract: The present invention relates to chiral diphosphorus compounds and their transition metal complexes, to a process for preparing chiral diphosphorus compounds and their transition metal complexes and also to their use in asymmetric syntheses.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: March 20, 2007
    Assignee: Lanxess Deutschland GmbH
    Inventors: Benjamin Meseguer, Hans-Christian Militzer, Sergio Castillon, Carmen Claver, Yolanda Diaz, Mohamed Aghmiz, Ester Guiu, Ali Aghmiz, Anna Masdeu
  • Chiral monophosphorus compounds
    Publication number: 20060183930
    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: April 10, 2006
    Publication date: August 17, 2006
    Inventors: Claus Dreisbach, Benjamin Meseguer, Thomas Prinz, Ulrich Scholz, Hans-Christian Militzer, Friederike Agel, Birgit Drieben-Holscher
  • Chiral ligands for application in asymmetric syntheses
    Publication number: 20060161022
    Abstract: The present invention relates to biarylbisphosphines and intermediates thereof. The scope of the invention further encompasses catalysts preparable from the biarylbisphosphines and their use in asymmetric syntheses.
    Type: Application
    Filed: December 8, 2005
    Publication date: July 20, 2006
    Inventors: Benjamin Meseguer, Dieter Arlt
  • Chiral monophosphorus compounds
    Patent number: 7057061
    Abstract: The present invention relates to catalysts comprising chiral monophosphorus compounds and their use, the chiral monophosphorus compounds themselves and also their precursors.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: June 6, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Claus Dreisbach, Benjamin Meseguer, Thomas Prinz, Ulrich Scholz, Hans-Christian Militzer, Friederike Agel, Birgit Drieβen-Hölscher
  • Process for stereoselectively reducing 4-aryl-4-oxobutanoic acid derivatives
    Publication number: 20050245760
    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 15, 2005
    Publication date: November 3, 2005
    Inventors: Hans-Christian Militzer, Boris Bosch, Markus Eckert, Benjamin Meseguer
  • Process for stereoselectively reducing 4-aryl-4-oxobutanoic acid derivatives
    Patent number: 6921822
    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: Grant
    Filed: June 9, 2003
    Date of Patent: July 26, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Christian Militzer, Boris Bosch, Markus Eckert, Benjamin Meseguer
  • Chiral phosphanes for use in asymmetric syntheses
    Publication number: 20050085377
    Abstract: The present invention relates to biarylbisphosphines and intermediates thereof. Furthermore, the scope of the invention encompasses catalysts which can be prepared from the bisarylphosphines and their use in asymmetric syntheses.
    Type: Application
    Filed: September 14, 2004
    Publication date: April 21, 2005
    Inventors: Dieter Arlt, Benjamin Meseguer
  • Chiral diphosphorus compounds and their transition metal complexes
    Publication number: 20050080047
    Abstract: The present invention relates to chiral diphosphorus compounds and their transition metal complexes, to a process for preparing chiral diphosphorus compounds and their transition metal complexes and also to their use in asymmetric syntheses.
    Type: Application
    Filed: August 19, 2003
    Publication date: April 14, 2005
    Inventors: Benjamin Meseguer, Hans-Christian Militzer, Sergio Castillon, Carmen Claver, Yolanda Diaz, Mohamed Aghmiz, Ester Guiu, Ali Aghmiz, Anna Masdeu
  • 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
  • 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
  • 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