Patents by Inventor Shuji Senda

Shuji Senda 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 preparing methyl 4-oxo-5-tetradecynoate
    Patent number: 4808340
    Abstract: A process for preparing methyl 4-oxo-5-tetradecynoate useful as an intermediate for synthesizing (R,Z)-5-dec-1-enyl-oxacyclopentan-2-one, which comprises reacting monomethyl succinate with an alkyl chlorocarbonate in the presence of a base to form an acid anhydride and reacting the acid anhydride with a Grignard reagent of 1-decyne. Methyl 4-oxo-5-tetradecynoate can be prepared in high yields at high purities by this process.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: February 28, 1989
    Assignee: Nitto Electric Industrial Co., Ltd.
    Inventors: Shuji Senda, Tetsuo Omata