Patents by Inventor Xi ZHEN

Xi ZHEN 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 biphenylamines
    Patent number: 12344586
    Abstract: The invention relates to a method for the preparation of 2-aminobiphenyls, key intermediates in the preparation of compounds of interest in the agrochemical industry. The process comprises reacting an ortho-substituted aniline and a phenylboro derivative in the presence of a base and a palladium catalyst, said palladium catalyst comprising a palladium source and a biphenyl phosphine ligand of formula (III) or a salt thereof.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: July 1, 2025
    Assignee: ADAMA MAKHTESHIM LTD.
    Inventors: Xi Zhen, Pingping Tang, Natali Ashush, Einat Kisin-Finfer
  • PROCESS FOR THE PREPARATION OF BIPHENYLAMINES
    Publication number: 20220380321
    Abstract: The invention relates to a method for the preparation of 2-aminobiphenyls, key intermediates in the preparation of compounds of interest in the agrochemical industry. The process comprises reacting an ortho-substituted aniline and a phenylboro derivative in the presence of a base and a palladium catalyst, said palladium catalyst comprising a palladium source and a biphenyl phosphine ligand of formula (III) or a salt thereof.
    Type: Application
    Filed: July 16, 2020
    Publication date: December 1, 2022
    Inventors: Xi ZHEN, Pingping TANG, Natali ASHUSH, Einat KISIN-FINFER