Patents by Inventor Akihiko Yoshiura

Akihiko Yoshiura 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).

  • Patent number: 7763750
    Abstract: A novel process for producing a 2-halogenobenzamide compound useful as a raw material or active ingredient for medicines and agricultural chemicals. The process, which is for producing a 2-halogenobenzamide compound represented by the general formula (I): (wherein R1, R2, R3, R4, and R6 may be the same or different and each represents hydrogen or C1-6 alkyl; R5 represents C1-6 alkyl; k is 1 or 2; Y1, Y2, Y3, and Y4 may be the same or different and each represents hydrogen, halogeno, etc.; and X represents chlorine, bromine, or iodine), is characterized by reacting an benzamide compound with a halogenating agent in the presence of a palladium catalyst to obtain a substituted benzamide compound and then reacting the resultant substituted benzamide compound with an oxidizing agent after or without isolating the substituted benzamide compound.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: July 27, 2010
    Assignee: Nihon Nohyaku Co., Ltd.
    Inventors: Noboru Abe, Hiroki Kodama, Akihiko Yoshiura
  • Publication number: 20070293701
    Abstract: A novel process for producing a 2-halogenobenzamide compound useful as a raw material or active ingredient for medicines and agricultural chemicals. The process, which is for producing a 2-halogenobenzamide compound represented by the general formula (I): (wherein R1, R2, R3, R4, and R6 may be the same or different and each represents hydrogen or C1-6 alkyl; R5 represents C1-6 alkyl; k is 1 or 2; Y1, Y2, Y3, and Y4 may be the same or different and each represents hydrogen, halogeno, etc.; and X represents chlorine, bromine, or iodine), is characterized by reacting an benzamide compound with a halogenating agent in the presence of a palladium catalyst to obtain a substituted benzamide compound and then reacting the resultant substituted benzamide compound with an oxidizing agent after or without isolating the substituted benzamide compound.
    Type: Application
    Filed: December 22, 2004
    Publication date: December 20, 2007
    Applicant: NIHON NOHYAKU CO., LTD.
    Inventors: Noboru Abe, Hiroki Kodama, Akihiko Yoshiura
  • Patent number: 6717013
    Abstract: The present invention provides an aniline derivative represented by the formula (I) wherein R1 and R2 are each H, (C1-12)alkyl, (C3-8)cycloalkyl, hydroxy(C1-12)alkyl, hydroxycarbonyl (C1-12)alkyl, (C1-6)-alkoxycarbonyl(C1-6)alkyl, —COR8, wherein R8 is H, halo-(C1-12)alkyl, (C3-8)cycloalkyl or (substituted) phenyl, COOR9, wherein R9 is a halo(C1-6)alkyl group, (substituted) phenyl or (substituted) benzyl; R3, R4, R5, R6 and R7 are each H, halogen, OH, nitro, halo(C1-12)alkylthio, (substituted) amino-(C1-2)alkyl, (substituted) phenyl, (substituted) benzyl, amino, —N(R10)R11 wherein R10 and R11 are each H, alkyl, cycloalkyl, (substituted) phenyl, (substituted) benzyl, —COR8 or COOR9, or (C2-27)perfluoroalkyl, etc., and a process for producing the aniline derivative. According to the process of the present invention, perfluoroalkylaniline derivatives can be obtained by using various anilines as the substrate with a high position selectivity and high yield.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: April 6, 2004
    Assignee: Nihon Nohyaku Co., Ltd.
    Inventors: Masanobu Onishi, Akihiko Yoshiura, Eiji Kohno, Kenji Tsubata
  • Publication number: 20030204104
    Abstract: The present invention provides an aniline derivative represented by the formula (I) 1
    Type: Application
    Filed: May 14, 2003
    Publication date: October 30, 2003
    Inventors: Masanobu Onishi, Akihiko Yoshiura, Eiji Kohno, Kenji Tsubata
  • Patent number: 6600074
    Abstract: The present invention provides an aniline derivative represented by the formula (I) wherein R1 and R2 are each H, (C1-12)alkyl, (C3-8)cycloalkyl, hydroxy(C1-12)alkyl, hydroxycarbonyl (C1-12)alkyl, (C1-6)-alkoxycarbonyl(C1-6)alkyl, —COR8, wherein R8 is H, halo-(C1-12)alkyl, (C3-8)cycloalkyl or (substituted) phenyl, COOR9, wherein R9 is a halo(C1-6)alkyl group, (substituted) phenyl or (substituted) benzyl; R3, R4, R5, R6and R7 are each H, halogen, OH, nitro, halo(C1-12)alkylthio, (substituted)amino-(C1-2)alkyl, (substituted) phenyl, (substituted) benzyl, amino, —N(R10)R11 wherein R10 and R11 are each H, alkyl, cycloalkyl, (substituted) phenyl, (substituted) benzyl, —COR8 or COOR9, or (C2-27)perfluoroalkyl, etc., and a process for producing the aniline derivative. According to the process of the present invention, perfluoroalkylaniline derivatives can be obtained by using various anilines as the substrate with a high position selectivity and high yield.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: July 29, 2003
    Assignee: Nihon Nohyaku Co., Ltd.
    Inventors: Masanobu Onishi, Akihiko Yoshiura, Eiji Kohno, Kenji Tsubata
  • Publication number: 20020198399
    Abstract: The present invention provides an aniline derivative represented by the formula (I) 1
    Type: Application
    Filed: July 29, 2002
    Publication date: December 26, 2002
    Inventors: Masanobu Onishi, Akihiko Yoshiura, Eiji Kohno, Kenji Tsubata