Patents by Inventor Koji Hagiya

Koji Hagiya 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).

  • Publication number: 20130060032
    Abstract: A potassium fluoride dispersion essentially consisting of potassium fluoride and an aprotic organic solvent having a boiling point higher than that of methanol, which is obtainable by mixing a mixture containing potassium fluoride and 5 to 50 parts by weight of methanol per 1 part by weight of potassium fluoride with the aprotic organic solvent followed by concentrating the obtained mixture, and a process for producing a fluorine-containing organic compound comprising contacting an organic compound having at least one group capable of being substituted nucleophilically with a fluorine atom with the potassium fluoride dispersion.
    Type: Application
    Filed: October 10, 2012
    Publication date: March 7, 2013
    Inventors: Koji HAGIYA, Kazuaki SASAKI
  • Publication number: 20130035506
    Abstract: The present invention relates to a process for producing a sulfur-containing amino acid, comprising a step of oxidizing a 2-aminoethanol compound having, at position 2, a sulfur-containing hydrocarbon group having 1 to 24 carbon atoms in the presence of oxygen and at least one transition metal selected from the group consisting of the elements of Groups 8, 9 and 10 of the periodic table.
    Type: Application
    Filed: April 5, 2011
    Publication date: February 7, 2013
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Koji Hagiya
  • Publication number: 20130023696
    Abstract: The present invention relates to a process for producing a sulfur-containing amino acid, comprising a step of oxidizing a 2-aminoethanol compound having, at position 2, a sulfur-containing hydrocarbon group having 1 to 24 carbon atoms in the presence of copper and water.
    Type: Application
    Filed: April 5, 2011
    Publication date: January 24, 2013
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Koji Hagiya
  • Publication number: 20130012737
    Abstract: According to the present invention, a new process for producing a sulfur-containing amino acid without using of hydrogen cyanide or sodium azide which requires careful handling as a raw material can be provided. The present invention relates to a process for producing a sulfur-containing amino acid represented by the following formula (1) or a salt thereof: wherein R1 is an alkyl group having 1 to 12 carbon atoms and optionally having substituents or a cycloalkyl group having 3 to 12 carbon atoms and optionally having substituents, and n is an integral number of from 1 to 4, comprising a step of reacting a sulfur-containing 2-ketocarboxylic acid represented by the formula (2) or a salt thereof: wherein R1 and n mean the same as defined above, with ammonia and hydrogen in the presence of a transition metal catalyst.
    Type: Application
    Filed: March 24, 2011
    Publication date: January 10, 2013
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kazuyasu Tani, Taro Hirose, Koji Hagiya
  • Patent number: 8350091
    Abstract: A potassium fluoride dispersion essentially consisting of potassium fluoride and an aprotic organic solvent having a boiling point higher than that of methanol, which is obtainable by mixing a mixture containing potassium fluoride and 5 to 50 parts by weight of methanol per 1 part by weight of potassium fluoride with the aprotic organic solvent followed by concentrating the obtained mixture, and a process for producing a fluorine-containing organic compound comprising contacting an organic compound having at least one group capable of being substituted nucleophilically with a fluorine atom with the potassium fluoride dispersion.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: January 8, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Koji Hagiya, Kazuaki Sasaki
  • Patent number: 8350051
    Abstract: A process for producing an ?-hydroxyketone compound, which comprises subjecting an aldehyde compound to a coupling reaction in the presence of an alkoxyimidazolidine compound represented by the formula (1) wherein R1? and R2? independently represent a hydrogen atom, etc., R3? and R4? independently represent a substituted or unsubstituted aryl group, etc. and R5? represents an alkyl group.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: January 8, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Koji Hagiya
  • Patent number: 8299264
    Abstract: A compound represented by the formula (1): wherein Ar represents an aromatic hydrocarbon group having 6 to 20 carbon atoms which may have a substituent, Ar? represents an aromatic hydrocarbon group having 6 to 20 carbon atoms which may have a substituent, and R represents an alkyl group having 1 to 4 carbon atoms.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: October 30, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Koji Hagiya, Yasutaka Aoyagi
  • Patent number: 8242278
    Abstract: A process for producing a biaryl compound, characterized by reacting an arylhydrazine compound, hydrogen peroxide and an aryl compound. When the reaction is conducted in the presence of a given metal or a compound of the metal or in the presence of a metal oxide obtained by reacting the given metal or a compound of the metal with hydrogen peroxide, then the yield of the biaryl compound is improved.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: August 14, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Koji Hagiya
  • Publication number: 20120142981
    Abstract: A production method of 1,1,3-trichloro-1-propene comprising the following steps A and B; Step A: 1,1,1,3-tetrachloropropane is dehydrochlorinated at a temperature between 30° C. and 50° C. in the presence of at least one base selected from the group consisting of alkali metal hydroxides and alkaline earth metal hydroxides, and a phase transfer catalyst, Step B: 3,3,3-trichloro-1-propene obtained in the step A is isomerized into 1,1,3-trichloro-1-propene in the presence of a metal catalyst.
    Type: Application
    Filed: August 27, 2010
    Publication date: June 7, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hiroshi Souda, Koji Hagiya
  • Publication number: 20120142946
    Abstract: Disclosed is a method for producing a halogen-substituted phthalide, which includes a reaction step of reacting a halogen-substituted phthalic anhydride with sodium borohydride.
    Type: Application
    Filed: May 19, 2010
    Publication date: June 7, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Koji Hagiya, Yasutaka Aoyagi
  • Publication number: 20120130118
    Abstract: A tetrafluorotoluene compound represented by the formula (1): wherein R represents a C1-C6 alkyl group, and a method for producing a tetrafluorotoluene compound represented by the formula (1) which comprises hydrogenating a tetrafluorobenzyl alcohol compound represented by the formula (2): Wherein R represents a C1-C6 alkyl group.
    Type: Application
    Filed: January 27, 2012
    Publication date: May 24, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Koji HAGIYA
  • Patent number: 8178325
    Abstract: There is provided is a process for producing a sulfur-containing ?-hydroxycarboxylic acid compound represented by the formula (2): wherein R1 represents hydrogen, C1-8 alkyl, or C6-20 aryl, which comprises subjecting a sulfur-containing ketol represented by the formula (1): wherein R1 is the same as defined above, to the action of microbial cells of a microorganism belonging to the genus Pseudomonas, Rhodococcus or Bacillus capable of converting the ketol into a corresponding ?-hydroxycarboxylic acid compound, or a treated material thereof, thereby producing the sulfur-containing ?-hydroxycarboxylic acid without using a hydroxynitrile compound as a starting material.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: May 15, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroyuki Asako, Koji Hagiya
  • Publication number: 20120097891
    Abstract: A potassium fluoride dispersion essentially consisting of potassium fluoride and an aprotic organic solvent having a boiling point higher than that of methanol, which is obtainable by mixing a mixture containing potassium fluoride and 5 to 50 parts by weight of methanol per 1 part by weight of potassium fluoride with the aprotic organic solvent followed by concentrating the obtained mixture, and a process for producing a fluorine-containing organic compound comprising contacting an organic compound having at least one group capable of being substituted nucleophilically with a fluorine atom with the potassium fluoride dispersion.
    Type: Application
    Filed: December 30, 2011
    Publication date: April 26, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: KOJI HAGIYA, Kazuaki Sasaki
  • Publication number: 20120101278
    Abstract: A process for producing a biaryl compound, characterized by reacting an arylhydrazine compound, hydrogen peroxide and an aryl compound. When the reaction is conducted in the presence of a given metal or a compound of the metal or in the presence of a metal oxide obtained by reacting the given metal or a compound of the metal with hydrogen peroxide, then the yield of the biaryl compound is improved.
    Type: Application
    Filed: December 27, 2011
    Publication date: April 26, 2012
    Inventor: KOJI HAGIYA
  • Publication number: 20120035395
    Abstract: Provided is a process for producing a phthalic acid compound whose aromatic ring has been chlorinated, the process reacting a phthalic acid compound and chlorine in a mixture of chlorosulfonic acid and thionyl chloride in the presence of an iodine compound.
    Type: Application
    Filed: April 23, 2010
    Publication date: February 9, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hiroshi Souda, Koji Hagiya
  • Publication number: 20120029195
    Abstract: A method for producing an alcohol compound, wherein a carboxylic acid ester compound is reduced with hydrogen in the presence of a ruthenium complex which is obtained by reacting a pyridine compound having at least one optionally substituted amino group with a ruthenium compound.
    Type: Application
    Filed: March 30, 2010
    Publication date: February 2, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yasutaka Aoyagi, Hiroshi Souda, Koji Hagiya
  • Publication number: 20120010417
    Abstract: A method for producing an alcohol compound, wherein a carboxylic acid ester compound is reduced with hydrogen in the presence of a ruthenium complex which is obtained by reacting an imidazolium salt (A) having at least one optionally substituted amino group with a ruthenium compound (B) in the presence of a base (C).
    Type: Application
    Filed: March 29, 2010
    Publication date: January 12, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Koji Hagiya, Yasutaka Aoyagi
  • Publication number: 20110313197
    Abstract: A method for producing a halogen-substituted benzene dimethanol, the method including: a first step of reacting a compound represented by formula (1) with a compound represented by formula (2) to obtain a dicarboxamide compound represented by formula (3), and a second step of reducing the dicarboxamide compound using a borohydride compound to obtain a halogen-substituted benzene dimethanol represented by formula (4).
    Type: Application
    Filed: March 4, 2010
    Publication date: December 22, 2011
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Koji Hagiya, Yasutaka Aoyagi
  • Patent number: 8071805
    Abstract: A process for producing a 2-hydroxy-4-(methylthio)butyrate compound represented by the formula (2): wherein A is a hydrogen atom or a group represented by R—CH2—, wherein R is a hydrogen atom or an alkyl group, which comprises the step of: reacting 4-(methylthio)-2-oxo-1-butanol with oxygen and a compound represented by the formula (1): A-OH??(1) wherein A is as defined above, in the presence of a copper compound.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: December 6, 2011
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Koji Hagiya
  • Patent number: 8039680
    Abstract: A process for producing 4-methyl-2,3,5,6-tetrafluorobenzyl alcohol including the following steps: (A): a step for fluorinating 2,3,5,6-tetrachloroterephthaloyl dichloride, (B): a step for reducing the product obtained in step (A), (C): a step for chlorinating the product obtained in step (B), and Step (D): a step for hydrogenating the product obtained in step (C).
    Type: Grant
    Filed: February 14, 2009
    Date of Patent: October 18, 2011
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Koji Hagiya