Patents by Inventor Timothy H. Warren

Timothy H. Warren 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: 9416080
    Abstract: Disclosed is a method for the transition metal-mediated oxidation of C—H bonds to form C—O or C—S bonds. The methods are useful for the formation of ethers (R—OR?) from alcohols, R?OH, and sp3-hybridized C—H bonds in substrates, R—H. Aryl or heteroaryl acetates may also be used for C—H to C—OAr bond formation. The methods are also useful in the preparation of C—S bonds from acetyl-protected thiols, MeC(O)SR, and disulfides, RSSR. Advantageously, the methods minimize reaction steps, the handling of oxidized intermediates, and environmental impact.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: August 16, 2016
    Assignee: Georgetown University
    Inventors: Timothy H. Warren, Nicholas G. Sapiezynski
  • Publication number: 20150321982
    Abstract: Disclosed is a method for the transition metal-mediated oxidation of C—H bonds to form C—O or C—S bonds. The methods are useful for the formation of ethers (R—OR?) from alcohols, R?OH, and sp3-hybridized C—H bonds in substrates, R—H. Aryl or heteroaryl acetates may also be used for C—H to C-OAr bond formation. The methods are also useful in the preparation of C—S bonds from acetyl-protected thiols, MeC(O)SR, and disulfides, RSSR. Advantageously, the methods minimize reaction steps, the handling of oxidized intermediates, and environmental impact.
    Type: Application
    Filed: June 14, 2013
    Publication date: November 12, 2015
    Inventors: Timothy H. Warren, Nicholas G. Sapiezynski
  • Patent number: 8895781
    Abstract: One aspect of the invention relates to a method of animation or amidation, comprising the step of combining a substrate, comprising a reactive C—H bond, and an amine or amide, comprising a reactive N—H bond, in the presence of an oxidizing agent and a metal-containing catalyst, thereby forming a product with a covalent bond between the carbon of the reactive C—H bond and the nitrogen of the reactive N—H bond.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: November 25, 2014
    Assignee: Georgetown University
    Inventor: Timothy H. Warren
  • Patent number: 8471051
    Abstract: One aspect of the present invention relates to a method for the transition metal (e.g., Cu(I)) mediated amidation of C—H bonds using electron-rich aliphatic azides. In certain embodiments, the methods are useful for the C—H insertion of nitrenes generated and stabilized by a ?-diketiminato metal catalyst. In certain embodiments, said nitrenes are generated from organoazides, or by oxidation of the corresponding amine. Another aspect of the present invention relates to olefin aziridination using said ?-diketiminato metal catalysts. In addition, the methods of the present invention include stereoselective C—H bond aminations and olefin aziridinatons. In certain embodiments, the methods are conducted in an aerobic environment. In certain embodiments, the present invention relates to the use of O2 as an oxidant, wherein water is the byproduct of oxidation; this fact avoids the generation of toxic byproducts and renders the methods atom economical.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: June 25, 2013
    Assignee: Georgetown University
    Inventor: Timothy H. Warren
  • Publication number: 20110213146
    Abstract: One aspect of the invention relates to a method of animation or amidation, comprising the step of combining a substrate, comprising a reactive C—H bond, and an amine or amide, comprising a reactive N—H bond, in the presence of an oxidizing agent and a metal-containing catalyst, thereby forming a product with a covalent bond between the carbon of the reactive C—H bond and the nitrogen of the reactive N—H bond.
    Type: Application
    Filed: September 3, 2009
    Publication date: September 1, 2011
    Applicant: Georgetown University
    Inventor: Timothy H. Warren
  • Publication number: 20100056806
    Abstract: One aspect of the present invention relates to a method for the transition metal (e.g., Cu(I)) mediated amidation of C—H bonds using electron-rich aliphatic azides. In certain embodiments, the methods are useful for the C—H insertion of nitrenes generated and stabilized by a ?-diketiminato metal catalyst. In certain embodiments, said nitrenes are generated from organoazides, or by oxidation of the corresponding amine. Another aspect of the present invention relates to olefin aziridination using said ?-diketiminato metal catalysts. In addition, the methods of the present invention include stereoselective C—H bond aminations and olefin aziridinatons. In certain embodiments, the methods are conducted in an aerobic environment. In certain embodiments, the present invention relates to the use of O2 as an oxidant, wherein water is the byproduct of oxidation; this fact avoids the generation of toxic byproducts and renders the methods atom economical.
    Type: Application
    Filed: December 5, 2007
    Publication date: March 4, 2010
    Applicant: Georgetown University
    Inventor: Timothy H. Warren