Patents by Inventor Gregory T. Whiteker

Gregory T. Whiteker 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 the preparation of 4-alkoxy-3-hydroxypicolinic acids
    Patent number: 9718783
    Abstract: 4,6-Dibromo-3-hydroxypicolinonitrile may be prepared from furfural in a series of chemical steps selected from cyano-amination, amine salt formation and bromination-rearrangement. 4-Alkoxy-3-hydroxypicolinic acids may be conveniently prepared from 4,6-dibromo-3-hydroxypicolinonitrile in a series of chemical steps selected from bromo substitution, nitrile hydrolysis and halogen reduction.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: August 1, 2017
    Assignee: Dow AgroSciences LLC
    Inventors: James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Nakyen Choy, Kenneth E. Stockman
  • METHOD FOR COUPLING A FIRST AROMATIC COMPOUND TO A SECOND AROMATIC COMPOUND
    Publication number: 20170174582
    Abstract: In one aspect, there is provided a method of coupling a first aromatic compound having a fluorosulfonate substituent to a second aromatic compound having a boron-containing substituent. In another aspect, there is provided a method of coupling a first aromatic compound having a hydroxyl substituent to a second aromatic compound having a boron-containing substituent in a one-pot reaction.
    Type: Application
    Filed: March 27, 2015
    Publication date: June 22, 2017
    Inventors: Patrick S. Hanley, Gregory T. Whiteker, Matthias S. Ober, William J. Kruper, Jr., Arkady L. Krasovskiy
  • Process for the preparation of 4-amino-3-chloro-5-fluoro-6-(substituted)picolinates
    Patent number: 9598368
    Abstract: 4-Amino-3-chloro-5-fluoro-6-(substituted)picolinates are conveniently prepared from 3,4,5,6-tetrachloropicolinonitrile by a series of steps involving fluorine exchange, amination, reaction with hydrazine, halogenation, hydrolysis and esterification, and transition metal assisted coupling.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: March 21, 2017
    Assignee: Dow AgroSciences LLC
    Inventors: Yuanming Zhu, Gregory T. Whiteker, Cynthia Arndt, James M. Renga, Robert D. J. Froese
  • PROCESS FOR THE PREPARATION OF 4-ALKOXY-3-HYDROXYPICOLINIC ACIDS
    Publication number: 20170044105
    Abstract: 4,6-Dibromo-3-hydroxypicolinonitrile may be prepared from furfural in a series of chemical steps selected from cyano-amination, amine salt formation and bromination-rearrangement. 4-Alkoxy-3-hydroxypicolinic acids may be conveniently prepared from 4,6-dibromo-3-hydroxypicolinonitrile in a series of chemical steps selected from bromo substitution, nitrile hydrolysis and halogen reduction.
    Type: Application
    Filed: October 31, 2016
    Publication date: February 16, 2017
    Inventors: James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Nakyen Choy, Kenneth E. Stockman
  • Process for the preparation of dibromohydroxypicolinonitrile
    Patent number: 9522887
    Abstract: 4,6-Dibromo-3-hydroxypicolinonitrile may be prepared from furfural in a series of chemical steps selected from cyano-amination, amine salt formation and bromination-rearrangement.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: December 20, 2016
    Assignee: Dow AgroSciences LLC
    Inventors: James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Nakyen Choy
  • Process for the preparation of 4-alkoxy-3-hydroxypicolinic acids
    Patent number: 9481651
    Abstract: 4,6-Dibromo-3-hydroxypicolinonitrile may be prepared from furfural in a series of chemical steps selected from cyano-amination, amine salt formation and bromination-rearrangement. 4-Alkoxy-3-hydroxypicolinic acids may be conveniently prepared from 4,6-dibromo-3-hydroxypicolinonitrile in a series of chemical steps selected from bromo substitution, nitrile hydrolysis and halogen reduction.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: November 1, 2016
    Assignee: Dow AgroSciences LLC
    Inventors: James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Nakyen Choy, Kenneth E. Stockman
  • Process for the preparation of 4-alkoxy-3-hydroxypicolinic acids
    Patent number: 9475771
    Abstract: 4,6-Dibromo-3-hydroxypicolinonitrile may be prepared from furfural in a series of chemical steps selected from cyano-amination, amine salt formation and bromination-rearrangement. 4-Alkoxy-3-hydroxypicolinic acids may be conveniently prepared from 4,6-dibromo-3-hydroxypicolinonitrile in a series of chemical steps selected from bromo substitution, nitrile hydrolysis and halogen reduction.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: October 25, 2016
    Assignee: Dow AgroSciences LLC
    Inventors: James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Nakyen Choy
  • Process for the preparation of 4-amino-3-chloro-5-fluoro-6-(substituted) picolinates
    Patent number: 9452984
    Abstract: 4-Amino-3-chloro-5-fluoro-6-(substituted)picolinates are conveniently prepared from 3,4,5,6-tetrachloropicolinonitrile by a series of steps involving fluorine exchange, amination, halogen exchange and hydrolysis, esterification and transition metal assisted coupling.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: September 27, 2016
    Assignee: Dow AgroSciences LLC
    Inventors: Kim E. Arndt, James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Christian T. Lowe
  • Process for the preparation of 4,5,6-trichloropicolinic acid
    Patent number: 9440923
    Abstract: 4,5,6-Trichloropicolinic acid is prepared by selectively dechlorinating 3,4,5,6-tetrachloropicolinic acid with zinc and a catalyst prepared from a nickel compound and a bidentate ligand in a polar solvent.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: September 13, 2016
    Assignee: Dow AgroSciences LLC
    Inventors: Matthew L. Grandbois, David S. Laitar, James M. Renga, Gregory T. Whiteker
  • Fluoropicolinoyl fluorides and processes for their preparation
    Patent number: 9376388
    Abstract: Provided herein are fluoropicolinoyl fluorides and processes for their preparation. In some embodiments, provided herein is a process for the preparation of 5-fluoro-6-aryl-picolinoyl fluorides from chloropicolinoyl chlorides.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: June 28, 2016
    Assignee: Dow AgroSciences LLC
    Inventors: James M. Renga, Yang Cheng, Joseck M. Muhuhi, David E. Podhorez, Gary A. Roth, Scott P. West, Gregory T. Whiteker, Yuanming Zhu
  • PROCESS FOR THE PREPARATION OF 4,5,6-TRICHLOROPICOLINIC ACID
    Publication number: 20160039760
    Abstract: 4,5,6-Trichloropicolinic acid is prepared by selectively dechlorinating 3,4,5,6-tetrachloropicolinic acid with zinc and a catalyst prepared from a nickel compound and a bidentate ligand in a polar solvent.
    Type: Application
    Filed: August 5, 2015
    Publication date: February 11, 2016
    Applicant: Dow AgroSciences LLC
    Inventors: Matthew L. Grandbois, David S. Laitar, James M. Renga, Gregory T. Whiteker
  • PROCESS FOR THE PREPARATION OF 4-ALKOXY-3-HYDROXYPICOLINIC ACIDS
    Publication number: 20160009649
    Abstract: 4,6-Dibromo-3-hydroxypicolinonitrile may be prepared from furfural in a series of chemical steps selected from cyano-amination, amine salt formation and bromination-rearrangement.
    Type: Application
    Filed: July 8, 2015
    Publication date: January 14, 2016
    Inventors: James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Nakyen Choy
  • PROCESS FOR THE PREPARATION OF 4-ALKOXY-3-HYDROXYPICOLINIC ACIDS
    Publication number: 20160009650
    Abstract: 4,6-Dibromo-3-hydroxypicolinonitrile may be prepared from furfural in a series of chemical steps selected from cyano-amination, amine salt formation and bromination-rearrangement. 4-Alkoxy-3-hydroxypicolinic acids may be conveniently prepared from 4,6-dibromo-3-hydroxypicolinonitrile in a series of chemical steps selected from bromo substitution, nitrile hydrolysis and halogen reduction.
    Type: Application
    Filed: July 8, 2015
    Publication date: January 14, 2016
    Inventors: James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Nakyen Choy, Kenneth E. Stockman
  • PROCESS FOR THE PREPARATION OF 4-ALKOXY-3-HYDROXYPICOLINIC ACIDS
    Publication number: 20160009676
    Abstract: 4,6-Dibromo-3-hydroxypicolinonitrile may be prepared from furfural in a series of chemical steps selected from cyano-amination, amine salt formation and bromination-rearrangement. 4-Alkoxy-3-hydroxypicolinic acids may be conveniently prepared from 4,6-dibromo-3-hydroxypicolinonitrile in a series of chemical steps selected from bromo substitution, nitrile hydrolysis and halogen reduction.
    Type: Application
    Filed: July 8, 2015
    Publication date: January 14, 2016
    Inventors: James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Nakyen Choy
  • Process for the preparation of 4-amino-5-fluoro-3-chloro-6-(substituted)picolinates
    Patent number: 9212141
    Abstract: 4-Amino-5-fluoro-3-chloro-6-(substituted)picolinates are prepared from trifluoroacetic acid, p-methoxyaniline, a 3,3-dialkoxyprop-1-yne and a substituted methylene amine by a series of steps.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: December 15, 2015
    Assignee: Dow AgroSciences, LLC.
    Inventors: James M. Renga, Gregory T. Whiteker, Peter L. Johnson, Christopher Galliford
  • Processes for the preparation of pesticidal compounds
    Patent number: 9199942
    Abstract: The present application provides processes for making pesticidal compounds and compounds useful both as pesticides and in the making of pesticidal compounds.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: December 1, 2015
    Assignee: Dow AgroSciences LLC
    Inventors: Qiang Yang, Beth Lorsbach, Gregory T. Whiteker, Carl DeAmicis, Joseck M. Muhuhi
  • PROCESS FOR THE PREPARATION OF 4-AMINO-3-CHLORO-5-FLUORO-6-(SUBSTITUTED) PICOLINATES
    Publication number: 20150274669
    Abstract: 4-Amino-3-chloro-5-fluoro-6-(substituted)picolinates are conveniently prepared from 3,4,5,6-tetrachloropicolinonitrile by a series of steps involving fluorine exchange, amination, halogen exchange and hydrolysis, esterification and transition metal assisted coupling.
    Type: Application
    Filed: June 9, 2015
    Publication date: October 1, 2015
    Applicant: Dow AgroSciences LLC
    Inventors: Kim E. Arndt, James M. Renga, Yuanming Zhu, Gregory T. Whiteker, Christian T. Lowe
  • Processes for the preparation of pesticidal compounds
    Patent number: 9108946
    Abstract: The present application provides processes for making pesticidal compounds and compounds useful both as pesticides and in the making of pesticidal compounds.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: August 18, 2015
    Assignee: Dow AgroSciences LLC
    Inventors: Qiang Yang, Beth Lorsbach, Gregory T. Whiteker, Gary Roth, Carl DeAmicis, Daniel I. Knueppel, Ann M. Buysse, Kaitlyn Gray, Xiaoyong Li, Joseck M. Muhuhi, Ronald Ross, Jr., David E. Podhorez, Yu Zhang
  • Processes for the preparation of pesticidal compounds
    Patent number: 9102655
    Abstract: The present application provides processes for making pesticidal compounds and compounds useful both as pesticides and in the making of pesticidal compounds.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: August 11, 2015
    Assignee: Dow AgroSciences LLC
    Inventors: Qiang Yang, Beth Lorsbach, Gregory T. Whiteker, Gary Roth, Carl DeAmicis, Thomas P. Clark, Kaitlyn Gray, Belgin Canturk, Elisabeth J. Kane, Yu Zhang, Joseck M. Muhuhi
  • Processes for the preparation of pesticidal compounds
    Patent number: 9102654
    Abstract: The present application provides processes for making pesticidal compounds and compounds useful both as pesticides and in the making of pesticidal compounds.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: August 11, 2015
    Assignee: Dow AgroSciences LLC
    Inventors: Qiang Yang, Beth Lorsbach, Gary Roth, Noormohamed M. Niyaz, Jeffrey Nissen, Ronald Ross, Jr., Gregory T. Whiteker, Carl DeAmicis, Kaitlyn Gray, Yu Zhang