Patents by Inventor Daniel Halsell ESS

Daniel Halsell ESS 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).

  • Direct stereospecific synthesis of unprotected aziridines from olefins
    Patent number: 9988349
    Abstract: A method for the direct stereospecific conversion of structurally diverse mono-, di-, tri- and tetra-substituted olefins to N—H, N-alkyl, N-cycloalkyl, or N-aralkyl aziridines using a hydroxylamine amination agent with transition metal catalyst. The method is operationally simple (i.e., one-pot), scalable and fast at ambient temperature.
    Type: Grant
    Filed: January 3, 2015
    Date of Patent: June 5, 2018
    Inventors: Daniel Halsell Ess, John Russell Falck, Jawahar Lal Jat, Laszlo Kurti
  • DIRECT STEREOSPECIFIC SYNTHESIS OF UNPROTECTED AZIRIDINES FROM OLEFINS
    Publication number: 20160340305
    Abstract: A method for the direct stereospecific conversion of structurally diverse mono-, di-, tri- and tetra-substituted olefins to N—H, N-alkyl, N-cycloalkyl, or N-aralkyl aziridines using a hydroxylamine amination agent with transition metal catalyst. The method is operationally simple (i.e., one-pot), scalable and fast at ambient temperature.
    Type: Application
    Filed: January 3, 2015
    Publication date: November 24, 2016
    Inventors: Daniel Halsell ESS, John Russell FALCK, Jawahar Lal JAT, Laszlo URTI