Patents by Inventor Thomas KLATT

Thomas KLATT 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 halo-substituted benzenes
    Patent number: 10087126
    Abstract: The invention relates to a process for the preparation of compound of formula (I) wherein R1 is halogen and R2 is halogen or hydrogen; comprising a) reacting the compound of formula (II) in an aprotic organic solvent in the presence of an aprotic polar co-solvent with a magnesium amide base followed by a halogenating agent, to the compound of formula I wherein R1 is halogen and R2 is hydrogen, and b) reacting the compound of formula (I), wherein R1 is chloro and R2 is hydrogen, in an aprotic organic solvent in the presence of an aprotic polar co-solvent with a magnesium amide base followed by a halogenating agent to a compound of formula I, wherein R1 is chloro and R2 is halogen.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: October 2, 2018
    Assignee: SYNGENTA PARTICIPATIONS AG
    Inventors: Helmars Smits, Paul Knochel, Thomas Klatt, Matthias Becker
  • PROCESS FOR THE PREPARATION OF HALO-SUBSTITUTED BENZENES
    Publication number: 20170297981
    Abstract: The invention relates to a process for the preparation of compound of formula (I) wherein R1 is halogen and R2 is halogen or hydrogen; comprising a) reacting the compound of formula (II) in an aprotic organic solvent in the presence of an aprotic polar co-solvent with a magnesium amide base followed by a halogenating agent, to the compound of formula I wherein R1 is halogen and R2 is hydrogen, and b) reacting the compound of formula (I), wherein R1 is chloro and R2 is hydrogen, in an aprotic organic solvent in the presence of an aprotic polar co-solvent with a magnesium amide base followed by a halogenating agent to a compound of formula I, wherein R1 is chloro and R2 is halogen.
    Type: Application
    Filed: October 8, 2015
    Publication date: October 19, 2017
    Applicant: Syngenta Participations AG
    Inventors: Helmars SMITS, Paul KNOCHEL, Thomas KLATT, Matthias BECKER