Patents by Inventor Yasuyuki NAKAE

Yasuyuki NAKAE 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 pyridazine compound
    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
  • Process for producing pyridazinone compound and production intermediates thereof
    Patent number: 9650347
    Abstract: The present invention provides a process for producing a compound of the formula (1) wherein X represents a hydrogen atom, etc., and Y represents a hydrogen atom, etc., which comprises step 1 of reacting a compound of the formula (2) and a compound of the formula (3) in the presence of a Lewis acid wherein R represents a hydrogen atom, etc., to obtain an adduct, and step 2 of reacting the adduct obtained in the step 1 and hydrazine to obtain the compound of the formula (1).
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: May 16, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yasuyuki Nakae, Akio Manabe, Takashi Miyamoto
  • Method for producing pyrazole compound
    Patent number: 9624177
    Abstract: A method for producing a pyrazole compound represented by formula (1): (wherein R1 represents an optionally substituted C1-12 alkyl group, an optionally substituted C3-12 cycloalkyl group, an optionally substituted C6-16 aryl group, or an optionally substituted pyridyl group, R2 and R3 each independently represent a hydrogen atom, a halogen atom, a C1-3 alkyl group, or a C1-3 haloalkyl group), said method including a step in which a pyrazolidine compound represented by formula (2): (wherein R1, R2, and R3 are as defined above) is reacted with a nitrite in the presence of an acid, allows a pyrazole compound to be produced industrially.
    Type: Grant
    Filed: February 16, 2015
    Date of Patent: April 18, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yasuyuki Nakae, Takashi Miyamoto
  • METHOD FOR PRODUCING PYRAZOLE COMPOUND
    Publication number: 20170008853
    Abstract: A method for producing a pyrazole compound represented by formula (1): (wherein R1 represents an optionally substituted C1-12 alkyl group, an optionally substituted C3-12 cycloalkyl group, an optionally substituted C6-16 aryl group, or an optionally substituted pyridyl group, R2 and R3 each independently represent a hydrogen atom, a halogen atom, a C1-3 alkyl group, or a C1-3 haloalkyl group), said method including a step in which a pyrazolidine compound represented by formula (2): (wherein R1, R2, and R3 are as defined above) is reacted with a nitrite in the presence of an acid, allows a pyrazole compound to be produced industrially.
    Type: Application
    Filed: February 16, 2015
    Publication date: January 12, 2017
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yasuyuki NAKAE, Takashi MIYAMOTO
  • METHOD FOR PRODUCING PYRIDAZINE COMPOUND
    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
  • PROCESS FOR PRODUCING PYRIDAZINONE COMPOUND AND PRODUCTION INTERMEDIATES THEREOF
    Publication number: 20150376138
    Abstract: The present invention provides a process for producing a compound of the formula (1) wherein X represents a hydrogen atom, etc., and Y represents a hydrogen atom, etc., which comprises step 1 of reacting a compound of the formula (2) and a compound of the formula (3) in the presence of a Lewis acid wherein R represents a hydrogen atom, etc., to obtain an adduct, and step 2 of reacting the adduct obtained in the step 1 and hydrazine to obtain the compound of the formula (1).
    Type: Application
    Filed: February 18, 2014
    Publication date: December 31, 2015
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yasuyuki NAKAE, Akio MANABE, Takashi MIYAMOTO