Patents by Inventor Takayuki Wakamatsu

Takayuki Wakamatsu 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: 11780813
    Abstract: The present invention provides a new production method for a chlorobenzene compound. Specifically, the present invention provides a production method in which the compound represented by formula (1) (in the formula, X1 represents a halogen atom) and chlorine are reacted in the presence of a Brønsted acid, thereby obtaining the chlorobenzene compound represented by formula (2) (in the formula, X1 represents the same as above).
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: October 10, 2023
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Junichi Ishikawa, Tohru Inoue, Takayuki Wakamatsu, Miyuki Iguchi
  • Patent number: 11760724
    Abstract: The present invention provides an effective production method for a pyridone compound. More specifically, the present invention provides a production method comprising: a step of reacting the compound represented by formula (1) (in the formula, X1 and X2 each independently represent a halogen atom, R1 represents a hydrogen atom, an amino group, or a group represented by NHCOR2, and R2 represents a C1-C5 alkyl group) with 4 to 10 times by mass, with respect to the compound represented by formula (1), of the compound represented by formula (2) (in the formula, R2 represents the same as described previously), in the presence of at least one of a tri(C1-C8 alkyl)amine and an alkali metal acetate, at a temperature of 100° C.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: September 19, 2023
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takayuki Wakamatsu, Miyuki Iguchi, Junichi Ishikawa, Tohru Inoue
  • Publication number: 20220213038
    Abstract: The present invention provides a new production method for a chlorobenzene compound. Specifically, the present invention provides a production method in which the compound represented by formula (1) (in the formula, X1 represents a halogen atom) and chlorine are reacted in the presence of a Brønsted acid, thereby obtaining the chlorobenzene compound represented by formula (2) (in the formula, X1 represents the same as above).
    Type: Application
    Filed: January 29, 2020
    Publication date: July 7, 2022
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Junichi ISHIKAWA, Tohru INOUE, Takayuki WAKAMATSU, Miyuki IGUCHI
  • Publication number: 20220106273
    Abstract: The present invention provides an effective production method for a pyridone compound. More specifically, the present invention provides a production method comprising: a step of reacting the compound represented by formula (1) (in the formula, X1 and X2 each independently represent a halogen atom, R1 represents a hydrogen atom, an amino group, or a group represented by NHCOR2, and R2 represents a C1-C5 alkyl group) with 4 to 10 times by mass, with respect to the compound represented by formula (1), of the compound represented by formula (2) (in the formula, R2 represents the same as described previously), in the presence of at least one of a tri(C1-C8 alkyl)amine and an alkali metal acetate, at a temperature of 100° C.
    Type: Application
    Filed: January 29, 2020
    Publication date: April 7, 2022
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takayuki WAKAMATSU, Miyuki IGUCHI, Junichi ISHIKAWA, Tohru INOUE
  • Patent number: 9732042
    Abstract: A pyridazine compound represented by formula [1]: which is useful as an active ingredient of a plant disease control agent can be produced, by steps of obtaining a compound represented by formula [3]: by reacting a compound represented by formula [4]: with a compound represented by formula [5]: obtaining a compound represented by formula [2]: by deprotecting the compound [3]; and reacting the compound [2] with a chlorinating agent.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: August 15, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yasuyuki Nakae, Takayuki Wakamatsu, Takashi Miyamoto
  • Patent number: 9708341
    Abstract: A pyridine compound represented by formula (1) that is useful as an insecticide is produced by reacting a compound represented by formula (2) and a compound represented by formula (3). In formula (2) L1 represents a halogen atom; R2, R3, R4, R5, and R6 represent chain hydrocarbon groups, etc., having 1-6 carbon atoms optionally substituted by fluorine atoms; A1 represents —NR7—, an oxygen atom, or a sulfur atom; A2 represents a nitrogen atom or ?CR8—; and R7 and R8 represent C1-6 chain hydrocarbon groups or hydrogen atoms. In formula (3) M+ represents a sodium ion, a potassium ion, or a lithium ion.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: July 18, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takayuki Wakamatsu, Rika Kasai
  • Publication number: 20170152270
    Abstract: A pyridine compound represented by formula (1) that is useful as an insecticide is produced by reacting a compound represented by formula (2) and a compound represented by formula (3). In formula (2) L1 represents a halogen atom; R2, R3, R4, R5, and R6 represent chain hydrocarbon groups, etc., having 1-6 carbon atoms optionally substituted by fluorine atoms; A1 represents —NR7—, an oxygen atom, or a sulfur atom; A2 represents a nitrogen atom or ?CR8—; and R7 and R8 represent C1-6 chain hydrocarbon groups or hydrogen atoms. In formula (3) M+ represents a sodium ion, a potassium ion, or a lithium ion.
    Type: Application
    Filed: May 29, 2015
    Publication date: June 1, 2017
    Inventors: Takayuki WAKAMATSU, Rika KASAI
  • Publication number: 20160090363
    Abstract: A pyridazine compound represented by formula [1]: which is useful as an active ingredient of a plant disease control agent can be produced, by steps of obtaining a compound represented by formula [3]: by reacting a compound represented by formula [4]: with a compound represented by formula [5]: obtaining a compound represented by formula [2]: by deprotecting the compound [3]; and reacting the compound [2] with a chlorinating agent.
    Type: Application
    Filed: April 24, 2014
    Publication date: March 31, 2016
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yasuyuki NAKAE, Takayuki WAKAMATSU, Takashi MIYAMOTO
  • Patent number: 9040709
    Abstract: The present invention relates to a novel method for producing a pyridazinone compound and an intermediate thereof as shown in the following scheme: wherein the symbols are as defined in the specification.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: May 26, 2015
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Markus Jachmann, Takayuki Wakamatsu, Mitsuharu Anryu
  • Publication number: 20140378688
    Abstract: The present invention relates to a novel method for producing a pyridazinone compound and an intermediate thereof as shown in the following scheme: wherein the symbols are as defined in the specification.
    Type: Application
    Filed: September 11, 2014
    Publication date: December 25, 2014
    Inventors: Markus JACHMANN, Takayuki WAKAMATSU, Mitsuharu ANRYU
  • Patent number: 8884010
    Abstract: The present invention relates to a novel method for producing a pyridazinone compound and an intermediate thereof as shown in the following scheme: wherein the symbols are as defined in the specification.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: November 11, 2014
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Markus Jachmann, Takayuki Wakamatsu, Mitsuharu Anryu
  • Publication number: 20130172556
    Abstract: The present invention relates to a novel method for producing a pyridazinone compound and an intermediate thereof as shown in the following scheme: wherein the symbols are as defined in the specification.
    Type: Application
    Filed: September 7, 2011
    Publication date: July 4, 2013
    Inventors: Markus Jachmann, Takayuki Wakamatsu, Mitsuharu Anryu