Patents by Inventor Yuji KAIYA

Yuji KAIYA 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 1,3-BENZODIOXOLE DERIVATIVE
    Publication number: 20230257368
    Abstract: An object of the present invention is to provide an industrially useful and novel process for producing a 1,3-benzodioxole derivative, with high yield and few impurities, including a novel chlorination reaction of a benzene ring. In the novel process for producing a 1,3-benzodioxole derivative, it has been found that an industrially useful and novel chlorination reaction of a benzene ring is conducted by using sulfuryl chloride with high yield and few impurities. Based on the finding, the invention has been accomplished.
    Type: Application
    Filed: July 7, 2021
    Publication date: August 17, 2023
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Tsuyoshi UEDA, Yuji KAIYA, Takahisa UCHIDA, Makoto IMAI