Patents by Inventor Tsugio KITAMURA
Tsugio KITAMURA 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).
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Publication number: 20250051299Abstract: A method for producing a fluoromethyl derivative represented by formula (1), the method including step A of reacting an alkene compound represented by formula (2) with a fluorine source represented by formula MFn, in the presence of a hypervalent-iodine aromatic compound (1a), or in the presence of an aromatic iodine compound (1b) and an oxidant (A) to fluorinate the alkene compound.Type: ApplicationFiled: October 29, 2024Publication date: February 13, 2025Applicants: DAIKIN INDUSTRIES, LTD., SAGA UNIVERSITYInventors: Masahiro HIGASHI, Yosuke KISHIKAWA, Tsugio KITAMURA
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Patent number: 12162854Abstract: A method for producing a fluoromethyl derivative represented by formula (1), the method including step A of reacting an alkene compound represented by formula (2) with a fluorine source represented by formula MFn, in the presence of a hypervalent-iodine aromatic compound (1a), or in the presence of an aromatic iodine compound (1b) and an oxidant (A) to fluorinate the alkene compound.Type: GrantFiled: May 10, 2019Date of Patent: December 10, 2024Assignees: DAIKIN INDUSTRIES, LTD., SAGA UNIVERSITYInventors: Masahiro Higashi, Yosuke Kishikawa, Tsugio Kitamura
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Patent number: 12091382Abstract: The present disclosure addresses the problem of providing a novel method for producing a fluorinated iodinated organic compound. The problem can be solved by a method for producing a fluorinated iodinated organic compound, comprising reacting a compound represented by formula (1): wherein R1 and R2 are each independently a hydrogen atom, a halogen atom, or an organic group, or R1 and R2 optionally form a ring together with the two adjacent carbon atoms; and n is 1 or 2, with a fluorine source, an iodine source, and an oxidizing agent or radical generator to add fluorine and iodine to the double bond or triple bond.Type: GrantFiled: November 9, 2021Date of Patent: September 17, 2024Assignees: DAIKIN INDUSTRIES, LTD., SAGA UNIVERSITYInventors: Masahiro Higashi, Yosuke Kishikawa, Tsugio Kitamura
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Patent number: 11827594Abstract: An object of the present invention is to provide a method for producing a fluorinated organic compound, whereby an iodosylbenzene derivative can be easily separated and recovered.Type: GrantFiled: March 29, 2019Date of Patent: November 28, 2023Assignees: DAIKIN INDUSTRIES, LTD., SAGA UNIVERSITYInventors: Masahiro Higashi, Yosuke Kishikawa, Tsugio Kitamura
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Publication number: 20230322649Abstract: The present disclosure relates to a method for producing a fluorinated organic compound comprises reacting a compound represented by formula (1): (wherein R1 and R2 are each independently a hydrogen atom, a halogen atom, or an organic group, or R1 and R2 optionally form a ring together with the two adjacent carbon atoms; n is 1 or 2; and wherein two R1s are optionally the same or different, two R2s are optionally the same or different, or two R?s or two R2s optionally form a ring together with their adjacent carbon atom), with (A) at least one fluorine source selected from the group consisting of hydrogen fluoride, hydrogen fluoride salts, and fluoride salts, and (B) a halogen source other than fluorine represented by the formula: R3(OX)m (wherein R3 is a hydrogen atom, a cation, or an organic group, X is a halogen atom other than a fluorine atom, and m is an integer corresponding to the valence of R3), to add fluorine and a halogen other than fluorine to the double bond or triple bond.Type: ApplicationFiled: June 16, 2023Publication date: October 12, 2023Applicants: DAIKIN INDUSTRIES, LTD., SAGA UNIVERSITYInventors: Masahiro HIGASHI, Yosuke KISHIKAWA, Tsugio KITAMURA, Juzo OYAMADA
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Patent number: 11667600Abstract: An object of the present invention is to provide a method for producing a fluorinated organic compound, whereby an iodosylbenzene derivative can be easily separated and recovered. The above object can be achieved by a method for producing a fluorinated organic compound, comprising step A of fluorinating an organic compound (1) by reaction with a fluorine source (3) in the presence of a hypervalent iodine aromatic ring compound (2a), or in the presence of an iodine aromatic ring compound (2b) and an oxidant (2bo); wherein the fluorine source (3) is a fluorine source (3a) represented by formula: MFn, wherein M is H, a metal of Group 1 of the periodic table, or a metal of Group 2 of the periodic table; and n is 1 or 2; and step B of separating the iodine aromatic ring compound from a reaction liquid after step A is started.Type: GrantFiled: March 29, 2019Date of Patent: June 6, 2023Assignees: DAIKIN INDUSTRIES, LTD., SAGA UNIVERSITYInventors: Masahiro Higashi, Yosuke Kishikawa, Tsugio Kitamura
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Publication number: 20220064098Abstract: The present disclosure addresses the problem of providing a novel method for producing a fluorinated iodinated organic compound. The problem can be solved by a method for producing a fluorinated iodinated organic compound, comprising reacting a compound represented by formula (1): wherein R1 and R2 are each independently a hydrogen atom, a halogen atom, or an organic group, or R1 and R2 optionally form a ring together with the two adjacent carbon atoms; and n is 1 or 2, with a fluorine source, an iodine source, and an oxidizing agent or radical generator to add fluorine and iodine to the double bond or triple bond.Type: ApplicationFiled: November 9, 2021Publication date: March 3, 2022Applicants: DAIKIN INDUSTRIES, LTD., SAGA UNIVERSITYInventors: Masahiro HIGASHI, Yosuke KISHIKAWA, Tsugio KITAMURA
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Publication number: 20210206740Abstract: A method for producing a fluoromethyl derivative represented by formula (1), the method including step A of reacting an alkene compound represented by formula (2) with a fluorine source represented by formula MFn, in the presence of a hypervalent-iodine aromatic compound (1a), or in the presence of an aromatic iodine compound (1b) and an oxidant (A) to fluorinate the alkene compound.Type: ApplicationFiled: May 10, 2019Publication date: July 8, 2021Applicants: DAIKIN INDUSTRIES, LTD., SAGA UNIVERSITYInventors: Masahiro HIGASHI, Yosuke KISHIKAWA, Tsugio KITAMURA
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Publication number: 20210114966Abstract: An object of the present invention is to provide a method for producing a fluorinated organic compound, whereby an iodosylbenzene derivative can be easily separated and recovered.Type: ApplicationFiled: March 29, 2019Publication date: April 22, 2021Applicants: DAIKIN INDUSTRIES, LTD., SAGA UNIVERSITYInventors: Masahiro HIGASHI, Yosuke KISHIKAWA, Tsugio KITAMURA
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Publication number: 20210024450Abstract: An object of the present invention is to provide a method for producing a fluorinated organic compound, whereby an iodosylbenzene derivative can be easily separated and recovered. The above object can be achieved by a method for producing a fluorinated organic compound, comprising step A of fluorinating an organic compound (1) by reaction with a fluorine source (3) in the presence of a hypervalent iodine aromatic ring compound (2a), or in the presence of an iodine aromatic ring compound (2b) and an oxidant (2bo); wherein the fluorine source (3) is a fluorine source (3a) represented by formula: MFn, wherein M is H, a metal of Group 1 of the periodic table, or a metal of Group 2 of the periodic table; and n is 1 or 2; and step B of separating the iodine aromatic ring compound from a reaction liquid after step A is started.Type: ApplicationFiled: March 29, 2019Publication date: January 28, 2021Applicants: DAIKIN INDUSTRIES, LTD., SAGA UNIVERSITYInventors: Masahiro HIGASHI, Yosuke KISHIKAWA, Tsugio KITAMURA