Patents by Inventor Yukiko EBIHARA

Yukiko EBIHARA 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).

  • Method for producing 5-alkynyl pyridine compound
    Patent number: 10730852
    Abstract: To provide an industrial method for producing a 5-alkynyl pyridine compound at a high yield. A method for producing a compound represented by the formula (3), which comprises reacting a 5-chloropyridine compound represented by the formula (1) and an alkyne compound represented by the formula (2) by using sodium carbonate or sodium hydrogen carbonate in the presence of a palladium catalyst having phosphine ligands: (in the formula (2), R is a hydrogen atom, a C1-C6 alkyl or a C3-C7 cycloalkyl).
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: August 4, 2020
    Assignee: Nissan Chemical Corporation
    Inventors: Hirohisa Saito, Shinji Iba, Yukiko Ebihara
  • METHOD FOR PRODUCING 5-ALKYNYL PYRIDINE COMPOUND
    Publication number: 20190382372
    Abstract: To provide an industrial method for producing a 5-alkynyl pyridine compound at a high yield. A method for producing a compound represented by the formula (3), which comprises reacting a 5-chloropyridine compound represented by the formula (1) and an alkyne compound represented by the formula (2) by using sodium carbonate or sodium hydrogen carbonate in the presence of a palladium catalyst having phosphine ligands: (in the formula (2), R is a hydrogen atom, a C1-C6 alkyl or a C3-C7 cycloalkyl).
    Type: Application
    Filed: June 14, 2019
    Publication date: December 19, 2019
    Applicant: Nissan Chemical Corporation
    Inventors: Hirohisa SAITO, Shinji IBA, Yukiko EBIHARA