Patents by Inventor Elizabeth Burkhardt

Elizabeth Burkhardt 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).

  • Patent number: 9073831
    Abstract: The invention relates to new processes to prepare low odor dialkyl sulfides, the low odor dialkyl sulfides obtainable by these processes and to methods of using these low odor dialkyl sulfides. Moreover, the invention relates to a process to prepare dialkyl sulfide borane complexes of high purity, the dialkyl sulfide borane complexes obtainable by this process and to a process for enantioselective reductions employing these dialkyl sulfide borane complexes of high purity as reducing agent.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: July 7, 2015
    Assignee: BASF SE
    Inventors: Elizabeth Burkhardt, Kevin Neigh
  • Publication number: 20140051891
    Abstract: The invention relates to new processes to prepare low odor dialkyl sulfides, the low odor dialkyl sulfides obtainable by these processes and to methods of using these low odor dialkyl sulfides. Moreover, the invention relates to a process to prepare dialkyl sulfide borane complexes of high purity, the dialkyl sulfide borane complexes obtainable by this process and to a process for enantioselective reductions employing these dialkyl sulfide borane complexes of high purity as reducing agent.
    Type: Application
    Filed: October 18, 2013
    Publication date: February 20, 2014
    Inventors: Elizabeth Burkhardt, Kevin Neigh
  • Patent number: 8586796
    Abstract: The invention relates to new processes to prepare low odor dialkyl sulfides, the low odor dialkyl sulfides obtainable by these processes and to methods of using these low odor dialkyl sulfides. Moreover, the invention relates to a process to prepare dialkyl sulfide borane complexes of high purity, the dialkyl sulfide borane complexes obtainable by this process and to a process for enantioselective reductions employing these dialkyl sulfide borane complexes of high purity as reducing agent.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: November 19, 2013
    Assignee: BASF SE
    Inventors: Elizabeth Burkhardt, Kevin Neigh
  • Patent number: 8106200
    Abstract: The present invention relates to new borane complexes with substituted pyridines, a process for the synthesis of new borane complexes with substituted pyridines, solutions comprising new borane complexes with substituted pyridines and a method of using new borane complexes with substituted pyridines for organic reactions.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: January 31, 2012
    Assignee: BASF SE
    Inventor: Elizabeth Burkhardt
  • Patent number: 8013189
    Abstract: In a process for the accelerated reduction of organic substrates, selected from the group consisting of esters, amides, nitriles, acids, ketones, imines or mixtures thereof, they are reacted with an amine borane, sulfide borane or ether borane complex as a borane source in the presence of organic accelerator compounds containing either Lewis acidic or Lewis basic sites in their structure, of which the Lewis acidic site can coordinate with the carbonyl or nitrile or imine group of the substrate or the Lewis basic site can coordinate with the borane.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: September 6, 2011
    Assignee: BASF SE
    Inventors: Elizabeth Burkhardt, Alex J. Attlesey, Christopher P. Sutton, Karl Matos
  • Publication number: 20110207934
    Abstract: The present invention relates to new borane complexes with substituted pyridines, a process for the synthesis of new borane complexes with substituted pyridines, solutions comprising new borane complexes with substituted pyridines and a method of using new borane complexes with substituted pyridines for organic reactions.
    Type: Application
    Filed: September 20, 2007
    Publication date: August 25, 2011
    Applicant: BASF SE
    Inventor: Elizabeth Burkhardt
  • Patent number: 7973171
    Abstract: The invention relates to a process for the synthesis of dialkoxyorganoboranes, in particular to a process for the synthesis of dialkoxyorganoboranes by an ester exchange reaction. Moreover, the invention relates to a process for the synthesis of organo-oxazaborolidine catalysts (organo-CBS) and of trialkylboroxins. Furthermore, the invention relates to methods of using dialkoxyorganoboranes for the preparation of organo-CBS catalysts and in Suzuki-type coupling reactions.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: July 5, 2011
    Inventors: Elizabeth Burkhardt, William Atkins
  • Publication number: 20110124920
    Abstract: The invention relates to new processes to prepare low odor dialkyl sulfides, the low odor dialkyl sulfides obtainable by these processes and to methods of using these low odor dialkyl sulfides. Moreover, the invention relates to a process to prepare dialkyl sulfide borane complexes of high purity, the dialkyl sulfide borane complexes obtainable by this process and to a process for enantioselective reductions employing these dialkyl sulfide borane complexes of high purity as reducing agent.
    Type: Application
    Filed: July 10, 2009
    Publication date: May 26, 2011
    Applicant: BASF SE
    Inventors: Elizabeth Burkhardt, Kevin Neigh
  • Publication number: 20110060163
    Abstract: The invention relates to a process for the synthesis of dialkoxyorganoboranes, in particular to a process for the synthesis of dialkoxyorganoboranes by an ester exchange reaction. Moreover, the invention relates to a process for the synthesis of organo-oxazaborolidine catalysts (organo-CBS) and of trialkylboroxins. Furthermore, the invention relates to methods of using dialkoxyorganoboranes for the preparation of organo-CBS catalysts and in Suzuki-type coupling reactions.
    Type: Application
    Filed: November 16, 2010
    Publication date: March 10, 2011
    Inventors: Elizabeth Burkhardt, William Atkins
  • Patent number: 7858827
    Abstract: The invention relates to a process for the synthesis of dialkoxyorganoboranes, in particular to a process for the synthesis of dialkoxyorganoboranes by an ester exchange reaction. Moreover, the invention relates to a process for the synthesis of organo-oxazaborolidine catalysts (organo-CBS) and of trialkylboroxins. Furthermore, the invention relates to methods of using dialkoxyorganoboranes for the preparation of organo-CBS catalysts and in Suzuki-type coupling reactions.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: December 28, 2010
    Assignee: BASF SE
    Inventors: Elizabeth Burkhardt, William Atkins
  • Publication number: 20090256111
    Abstract: The present invention relates to new dialkylborane amine complexes, a process for the synthesis of new dialkylborane amine complexes, solutions comprising new dialkylborane amine complexes and a method of using new dialkylborane amine complexes for organic reactions.
    Type: Application
    Filed: November 5, 2007
    Publication date: October 15, 2009
    Applicant: BASF SE Patents, Trademarks and Licenses
    Inventor: Elizabeth Burkhardt
  • Publication number: 20090082599
    Abstract: In a process for the accelerated reduction of organic substrates, selected from the group consisting of esters, amides, nitriles, acids, ketones, imines or mixtures thereof, they are reacted with an amine borane, sulfide borane or ether borane complex as a borane source in the presence of organic accelerator compounds containing either Lewis acidic or Lewis basic sites in their structure, of which the Lewis acidic site can coordinate with the carbonyl or nitrile or imine group of the substrate or the Lewis basic site can coordinate with the borane.
    Type: Application
    Filed: September 21, 2007
    Publication date: March 26, 2009
    Applicant: BASF Aktiengesellschaft
    Inventors: Elizabeth Burkhardt, Alex J. Attlesey, Christopher P. Sutton, Karl Matos
  • Publication number: 20090082568
    Abstract: In a process for the accelerated reduction of organic substrates, selected from the group consisting of ester, amides, nitriles, acids, ketones, imines or mixtures thereof, the substrates are reacted with an amine borane, sulfide borane or ether borane complex as a borane source in the presence of organic accelerator compounds containing both Lewis acidic and Lewis basic sites in their structure, of which the Lewis acidic site can coordinate with the carbonyl or nitrile or imine group of the substrate and the Lewis basic site can coordinate with the borane.
    Type: Application
    Filed: September 21, 2007
    Publication date: March 26, 2009
    Applicant: BASF Aktiengesellschaft
    Inventor: Elizabeth Burkhardt
  • Publication number: 20080200728
    Abstract: The invention relates to a process for the synthesis of dialkoxyorganoboranes, in particular to a process for the synthesis of dialkoxyorganoboranes by an ester exchange reaction. Moreover, the invention relates to a process for the synthesis of organo-oxazaborolidine catalysts (organo-CBS) and of trialkylboroxins. Furthermore, the invention relates to methods of using dialkoxyorganoboranes for the preparation of organo-CBS catalysts and in Suzuki-type coupling reactions.
    Type: Application
    Filed: June 9, 2006
    Publication date: August 21, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Elizabeth Burkhardt, William Atkins