Patents by Inventor Haruko Mita

Haruko Mita 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: 8552182
    Abstract: A method for producing a 3-(substituted oxy)-4-pyridazinol compound represented by the following general formula (I): comprising reacting a compound represented by the following general formula (III): with a compound represented by the following general formula (IV): MO—R2??(IV). The compound represented by the general formula (I) can be reacted with a compound represented by the following general formula (VI): to provide a compound of general formula (V): Each of the groups in the formulas is defined. The compounds of general formulas (I) and (V) can be obtained in a high yield and with high selectivity at a low cost, and therefore various functional and active substances can be advantageously synthesized using the compounds as a medicine, an agricultural chemical, a functional material, or an intermediate thereof.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: October 8, 2013
    Assignee: Mitsui Chemicals Agro, Inc.
    Inventors: Hideaki Ikishima, Nobuhiro Kondo, Takeshi Takada, Yoshihisa Tsukamoto, Hidetake Yoshitomi, Haruko Mita
  • Patent number: 8367846
    Abstract: The present invention provides a method of producing 2-alkyl-3-aminothiophene derivative represented by Formula (4), the method comprising oxidizing a compound represented by the following Formula (1) to produce a compound represented by the following Formula (3) and reducing the compound represented by the following Formula (3): wherein in Formula (1), Formula (3), and Formula (4), R represents an alkyl group, a cycloalkyl group, or a bicycloalkyl group; and X represents a hydroxyl group, a halogen atom acyloxy group, an alkylsulfonyl group, or an arylsulfonyl group.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: February 5, 2013
    Assignee: Mitsui Chemicals Agro, Inc.
    Inventors: Yasuaki Fukazawa, Yoji Aoki, Haruko Mita, Hironori Komatsu
  • Publication number: 20120184736
    Abstract: Disclosed is a method for producing a 3-(substituted oxy)-4-pyridazinol derivative represented by the general formula (I), which comprises reacting a compound represented by the general formula (III) with a compound represented by the general formula (IV) in the presence or absence of a base and in the presence or absence of a solvent. According to the present invention, a 3-(substituted oxy)-4-pyridazinol derivative represented by the general formula (I) can be produced in high yield and with high selectivity.
    Type: Application
    Filed: September 29, 2010
    Publication date: July 19, 2012
    Applicant: MITSUI CHEMICALS AGRO, INC
    Inventors: Hideaki Ikishima, Nobuhiro Kondo, Takeshi Takada, Yoshihisa Tsukamoto, Hidetake Yoshitomi, Haruko Mita
  • Publication number: 20100267963
    Abstract: The present invention provides a method of producing 2-alkyl-3-aminothiophene derivative represented by Formula (4), the method comprising oxidizing a compound represented by the following Formula (1) to produce a compound represented by the following Formula (3) and reducing the compound represented by the following Formula (3): wherein in Formula (1), Formula (3), and Formula (4), R represents an alkyl group, a cycloalkyl group, or a bicycloalkyl group; and X represents a hydroxyl group, a halogen atom acyloxy group, an alkylsulfonyl group, or an arylsulfonyl group.
    Type: Application
    Filed: April 16, 2010
    Publication date: October 21, 2010
    Applicant: MITSUI CHEMICALS AGRO, INC.
    Inventors: Yasuaki FUKAZAWA, Yoji Aoki, Haruko Mita, Hironori Komatsu