Patents by Inventor Kenichiro Itami

Kenichiro Itami 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: 20190375692
    Abstract: A carbon nanobelt represented by formula (1) was synthesized by chemical synthesis: wherein each Ar is identical or different and represents an aromatic hydrocarbon ring; each R1 is identical or different and represents hydrogen, alkyl, aryl, or alkoxy; and n represents an integer of 0 or more.
    Type: Application
    Filed: February 14, 2018
    Publication date: December 12, 2019
    Inventors: Kenichiro ITAMI, Yasutomo SEGAWA, Guillaume POVIE, Yuhei MIYAUCHI, Taishi NISHIHARA
  • Patent number: 9527737
    Abstract: Carbon nanotubes (CNTs) having a desired diameter are selectively produced by reacting a carbon source with a cyclic compound in which multiple aromatic rings are continuously bonded. The reaction is preferably performed by supplying a gaseous carbon source under reduced pressure and heating. The cyclic compound in which multiple aromatic rings are continuously bonded is preferably a cyclic compound in which bivalent aromatic hydrocarbon groups are continuously bonded, or a modified cycloparaphenylene compound in which a cycloparaphenylene compound or at least one phenylene group of the cycloparaphenylene compound is substituted with a condensed cyclic group such as a naphthylene group.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: December 27, 2016
    Assignee: National University Corporation Nagoya University
    Inventors: Kenichiro Itami, Yasutomo Segawa, Hisanori Shinohara, Ryo Kitaura
  • Patent number: 9481618
    Abstract: A cyclopolyarylene compound represented by Formula (1): wherein k is the same or different, and each represents 0, 1 or 2; m is the same or different, and each represents 1, 2 or 3; and n represents 3, 4, 5 or 6.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: November 1, 2016
    Assignee: National University Corporation Nagoya University
    Inventors: Kenichiro Itami, Yasutomo Segawa, Akiko Yagi
  • Publication number: 20160168179
    Abstract: If a method for directly functionalizing cycloparaphenylene compounds is developed, such a method is expected to be applied to any cycloparaphenylene compound, thus theoretically enabling introduction of a functional group into all cycloparaphenylene compounds. Therefore, a primary object of the present invention is to provide a method for easily functionalizing cycloparaphenylene compounds directly. A cyclopolyarylene metal complex in which a metal tricarbonyl is coordinated to one benzene ring of a cyclopolyarylene compound is provided. The cyclopolyarylene metal complex is obtained by using a production method comprising the step of reacting a cyclopolyarylene compound with a metal compound represented by the following formula: M(CO)3Ym, wherein M is a metal atom; Y is the same or different, and each represents a ligand; and m is an integer of 1 to 3.
    Type: Application
    Filed: December 15, 2015
    Publication date: June 16, 2016
    Inventors: Kenichiro Itami, Yasutomo Segawa, Natsumi Kubota
  • Publication number: 20160074853
    Abstract: An object of the present invention is to provide a method for directly performing arylation (particularly ?-arylation) of carbonyl or thiocarbonyl compounds using a more inexpensive phenol derivative and nickel catalyst. Another object of the present invention is to provide a novel nickel catalyst that can be used in this method, and a novel ligand of the nickel catalyst. The novel compounds of the present invention are a compound having a diphosphine skeleton in which a five- or six-membered heterocyclic ring is substituted with two dialkylphosphines and/or dicycloalkylphosphines, or a salt thereof, and a compound having the diphosphine skeleton that is bound to nickel. Moreover, coupling reaction of a carbonyl compound and a phenol derivative can be advanced in the presence of a nickel compound having a monodentate or bidentate dialkylphosphine and/or dicycloalkylphosphine skeleton.
    Type: Application
    Filed: March 10, 2015
    Publication date: March 17, 2016
    Inventors: Kenichiro Itami, Junichiro Yamaguchi, Ryosuke Takise, Eva Koch
  • Patent number: 9266909
    Abstract: This invention selectively synthesizes a cycloparaphenylene compound having 10, 11, or 13 benzene rings. The invention also synthesizes a cycloparaphenylene compound in which a functional group is introduced into a desired portion. By reacting specific raw materials using a specific reaction, a cyclic compound having 10, 11, or 13 bivalent aromatic hydrocarbon groups, bivalent heterocyclic groups, or derivative groups thereof can be selectively obtained as a pure substance.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: February 23, 2016
    Assignee: National University Corporation Nagoya University
    Inventors: Kenichiro Itami, Yasutomo Segawa, Haruka Omachi, Sanae Matsuura, Yusuke Nakanishi, Yuuki Ishii
  • Patent number: 9056822
    Abstract: PAH is subjected to C—H/C—B coupling using a specific boron compound, a palladium compound, and o-chloranil to produce a compound in which a C—H bond of the PAH is directly arylated regioselectively in a simple manner. When the substrate and the boron compound are appropriately selected, a larger PAH can also be obtained by further performing an annulation reaction after the coupling reaction. Similarly, when PAH is subjected to C—H/C—H cross-coupling using a specific aromatic compound, a palladium compound, and o-chloranil, a compound in which a C—H bond of the PAH is directly arylated regioselectively can be produced in a simple manner. When the substrate and the aromatic compound are appropriately selected in this case, a larger PAH can also be obtained by further performing an annulation reaction after the cross-coupling reaction.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: June 16, 2015
    Assignee: National University Corporation Nagoya University
    Inventors: Kenichiro Itami, Kenji Mochida, Katsuaki Kawasumi, Yasutomo Segawa, Tomonori Kajino
  • Patent number: 9029551
    Abstract: This invention provides: a compound for accurately forming a carbon nanoring that contains a specific number of organic rings and has a definite diameter; a method for producing the compound; a method for efficiently producing a carbon nanoring; and a cycloparaphenylene obtained by the production method. The carbon nanoring of the present invention is a compound obtained by bonding a specific number of organic ring groups. The method for producing a carbon nanoring of the present invention comprises a modification step wherein a halogen atom in a U-shaped compound is modified into a boron compound, and a coupling step wherein the U-shaped compound is subjected to a coupling reaction. The U-shaped compound is a novel compound that has cyclohexane rings, benzene rings, and specific organic ring groups.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: May 12, 2015
    Assignee: National University Corporation Nagoya University
    Inventors: Kenichiro Itami, Yasutomo Segawa, Haruka Omachi, Sanae Matsuura, Katsuma Matsui
  • Publication number: 20150126779
    Abstract: This invention selectively synthesizes a cycloparaphenylene compound having 10, 11, or 13 benzene rings. The invention also synthesizes a cycloparaphenylene compound in which a functional group is introduced into a desired portion. By reacting specific raw materials using a specific reaction, a cyclic compound having 10, 11, or 13 bivalent aromatic hydrocarbon groups, bivalent heterocyclic groups, or derivative groups thereof can be selectively obtained as a pure substance.
    Type: Application
    Filed: March 7, 2013
    Publication date: May 7, 2015
    Inventors: Kenichiro Itami, Yasutomo Segawa, Haruka Omachi, Sanae Matsuura, Yusuke Nakanishi, Yuuki Ishii
  • Patent number: 8993777
    Abstract: The present invention is a method for producing a phenyl-substituted heterocyclic derivative represented by general formula (1), which has a step wherein a heteroaromatic compound represented by general formula (2) is reacted with a phenol derivative represented by general formula (3) in the presence of a nickel compound, 1,2-bis(dicyclohexylphosphino)ethane, and a base.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: March 31, 2015
    Assignee: National University Corporation Nagoya University
    Inventors: Kenichiro Itami, Junichiro Yamaguchi, Kei Muto
  • Publication number: 20140275549
    Abstract: The present invention is a method for producing a phenyl-substituted heterocyclic derivative represented by general formula (1), which has a step wherein a heteroaromatic compound represented by general formula (2) is reacted with a phenol derivative represented by general formula (3) in the presence of a nickel compound, 1,2-bis(dicyclohexylphosphino)ethane, and a base.
    Type: Application
    Filed: October 10, 2012
    Publication date: September 18, 2014
    Applicant: National University Corporation Nagoya University
    Inventors: Kenichiro Itami, Junichiro Yamaguchi, Kei Muto
  • Publication number: 20140206908
    Abstract: PAH is subjected to C—H/C—B coupling using a specific boron compound, a palladium compound, and o-chloranil to produce a compound in which a C—H bond of the PAH is directly arylated regioselectively in a simple manner. When the substrate and the boron compound are appropriately selected, a larger PAH can also be obtained by further performing an annulation reaction after the coupling reaction. Similarly, when PAH is subjected to C—H/C—H cross-coupling using a specific aromatic compound, a palladium compound, and o-chloranil, a compound in which a C—H bond of the PAH is directly arylated regioselectively can be produced in a simple manner. When the substrate and the aromatic compound are appropriately selected in this case, a larger PAH can also be obtained by further performing an annulation reaction after the cross-coupling reaction.
    Type: Application
    Filed: June 8, 2012
    Publication date: July 24, 2014
    Applicant: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Kenichiro Itami, Kenji Mochida, Katsuaki Kawasumi, Yasutomo Segawa, Tomonori Kajino
  • Publication number: 20140066661
    Abstract: A cyclopolyarylene compound represented by Formula (1): wherein k is the same or different, and each represents 0, 1 or 2; m is the same or different, and each represents 1, 2 or 3; and n represents 3, 4, 5 or 6.
    Type: Application
    Filed: March 9, 2012
    Publication date: March 6, 2014
    Applicant: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Kenichiro Itami, Yasutomo Segawa, Akiko Yagi
  • Publication number: 20140030183
    Abstract: Carbon nanotubes (CNTs) having a desired diameter are selectively produced by reacting a carbon source with a cyclic compound in which multiple aromatic rings are continuously bonded. The reaction is preferably performed by supplying a gaseous carbon source under reduced pressure and heating. The cyclic compound in which multiple aromatic rings are continuously bonded is preferably a cyclic compound in which bivalent aromatic hydrocarbon groups are continuously bonded, or a modified cycloparaphenylene compound in which a cycloparaphenylene compound or at least one phenylene group of the cycloparaphenylene compound is substituted with a condensed cyclic group such as a naphthylene group.
    Type: Application
    Filed: March 8, 2012
    Publication date: January 30, 2014
    Applicant: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Kenichiro Itami, Yasutomo Segawa, Hisanori Shinohara, Ryo Kitaura
  • Publication number: 20130324768
    Abstract: The present invention produces Cyclic Compound (1) in which organic ring groups including cyclohexane rings and benzene rings are continuously bonded, using a compound having at least one cyclohexane ring and benzene rings with halogen atoms at the two terminuses, in the presence of a nickel compound (bis(1,5-cyclooctadiene)nickel, etc.). Thereafter, by converting the cyclohexane rings in Cyclic Compound (1) into benzene rings, a desired carbon nanoring can be obtained. Thereby, the present invention efficiently produces a carbon nanoring made of a compound having a cyclic structure in which a desired number of organic ring groups are continuously bonded, with a short production process.
    Type: Application
    Filed: March 8, 2011
    Publication date: December 5, 2013
    Applicant: National University Corporation Nagoya University
    Inventors: Kenichiro Itami, Yasutomo Segawa, Shinpei Miyamoto, Haruka Omachi, Sanae Matsuura, Petr Senel
  • Publication number: 20130041155
    Abstract: This invention provides: a compound for accurately forming a carbon nanoring that contains a specific number of organic rings and has a definite diameter; a method for producing the compound; a method for efficiently producing a carbon nanoring; and a cycloparaphenylene obtained by the production method. The carbon nanoring of the present invention is a compound obtained by bonding a specific number of organic ring groups. The method for producing a carbon nanoring of the present invention comprises a modification step wherein a halogen atom in a U-shaped compound is modified into a boron compound, and a coupling step wherein the U-shaped compound is subjected to a coupling reaction. The U-shaped compound is a novel compound that has cyclohexane rings, benzene rings, and specific organic ring groups.
    Type: Application
    Filed: February 10, 2011
    Publication date: February 14, 2013
    Applicant: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Kenichiro Itami, Yasutomo Segawa, Haruka Omachi, Sanae Matsuura, Katsuma Matsui
  • Publication number: 20030139600
    Abstract: The present invention provides a compound which can be purified by conventional acid/base extraction.
    Type: Application
    Filed: February 12, 2003
    Publication date: July 24, 2003
    Applicant: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Junichi Yoshida, Kenichiro Itami, Seiji Suga
  • Patent number: 6548673
    Abstract: The present invention provides a compound which can be purified by conventional acid/base extraction. There is disclosed 2-pyridylsilane of formula (1): wherein R1 represents an alkyl group, etc, R2 and R3 represent an alkyl group, an alkoxy group, etc., R4, R5, R6 and R7 represent a hydrogen atom, a halogen atom, an alkyl group, etc.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: April 15, 2003
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Junichi Yoshida, Kenichiro Itami, Seiji Suga
  • Patent number: 6531602
    Abstract: The present invention provides a compound which can be purified by conventional acid/base extraction. There is disclosed 2-pyridylsilane of formula (1): wherein R1 represents an alkyl group, etc, R2 and R3 represent an alkyl group, an alkoxy group, etc, R4, R5, R6 and R7 represent a hydrogen atom, a halogen atom, an alkyl group, etc.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: March 11, 2003
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Junichi Yoshida, Kenichiro Itami, Seiji Suga
  • Publication number: 20020165397
    Abstract: The present invention provides a compound which can be purified by conventional acid/base extraction.
    Type: Application
    Filed: May 8, 2002
    Publication date: November 7, 2002
    Applicant: Sumitomo Chemical Co., Ltd.
    Inventors: Junichi Yoshida, Kenichiro Itami, Seiji Suga