Patents by Inventor Shu Kobayashi

Shu Kobayashi 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: 20110054190
    Abstract: Disclosed is a technology for enabling an efficient asymmetric Michael addition reaction which does not require a large amount of a malonic ester, while having a short reaction time. Specifically disclosed is a catalyst which is composed of MX2 (wherein M is Be, Mg, Ca, Sr, Ba or Ra and X is an arbitrary group) and a compound represented by general formula [I]. [In the formula, R7, R8, R9 and R10 each represents a substituted cyclic group or an unsubstituted cyclic group.
    Type: Application
    Filed: January 28, 2009
    Publication date: March 3, 2011
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Shu Kobayashi, Magno Agostinho, Uwe Schneider, Miyuki Yamaguchi
  • Patent number: 7754898
    Abstract: An asymmetric synthesis of amino acid compound that is useful as a starting material or synthetic intermediate for production of medicinal products, agrichemicals, perfumes, functional polymers, etc. There is provided a method of enanthio-selective nucleophilic addition reaction to imine compound being a method of nucleophilic addition reaction of enamide compound accompanied by amino formation to imino group (—CH?N—) of imine compound, characterized in that the reaction is performed in the presence of a chiral copper catalyst. Further, there is provided a novel method of synthesizing an amino acid compound, etc., to which the above is applied.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: July 13, 2010
    Assignee: Japan Science and Technology Agency
    Inventor: Shu Kobayashi
  • Patent number: 7741242
    Abstract: The present invention discloses 1) a catalyst composition consisting of a crosslinked organic polymer compound and a palladium catalyst, wherein said catalyst is physically carried on said crosslinked organic polymer compound, 2) a manufacturing method of the above catalyst composition 1), characterized by homogenizing a straight chain organic polymer compound, having a crosslinkable functional group, and a palladium catalyst in a solvent dissolving said straight chain organic polymer compound, then depositing a composition thus formed and subjecting the crosslinkable functional group in said deposit to a crosslinking reaction, 3) a method for substitution reaction at an allyl position, characterized by reacting an allyl carbonate and a neucleophilic agent in the presence of the above catalyst composition 1), and 4) a method for oxidizing an alcohol, characterized by subjecting the above catalyst composition 1) to reaction with an alcohol.
    Type: Grant
    Filed: September 1, 2003
    Date of Patent: June 22, 2010
    Assignees: Wako Pure Chemical Industries, Ltd., Japan Science and Technology Corporation
    Inventors: Shu Kobayashi, Atsunori Sano, Keiji Oono
  • Patent number: 7732638
    Abstract: A novel method of an amidocarbonylation reaction among an aldehyde compound, an amide compound, and carbon monoxide, which comprises using a palladium-supporting crosslinked-polymer composition containing palladium clusters having a major-axis length of 20 nm or shorter to conduct the amidocarbonylation reaction. Thus, an N-acyl-?-amino acid can be more efficiently and selectively synthesized in a dean reaction system. Also provided is a catalyst for use in the method.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: June 8, 2010
    Assignee: Japan Science and Technology Agency
    Inventors: Shu Kobayashi, Ryo Akiyama
  • Patent number: 7705161
    Abstract: A method of the intramolecular and intermolecular cyclization of an N-acylhydrazone for obtaining a pyrazoline skeleton or pyrazolidine skeleton under ordinary conditions with high stereoselectivity and in high yield. An N-acylhydrazone represented by the following formula (I): (wherein R1 and R2 are the same or different and each represents hydrogen or a hydrocarbon group and Ar represents an optionally substituted aromatic hydrocarbon group) is converted to an N-acylpyrazoline derivative with high stereoselectivity in the presence of a Lewis acid catalyst or asymmetric Lewis acid catalyst.
    Type: Grant
    Filed: February 21, 2005
    Date of Patent: April 27, 2010
    Assignee: Japan Science and Technology Agency
    Inventors: Shu Kobayashi, Yasuhiro Yamashita
  • Patent number: 7667078
    Abstract: An asymmetric reaction catalyst is obtained by mixing a pentavalent niobium compound and an optically active triol or tetraol having a binaphthol structure of R or S configuration, and the triol is represented by the following formula: (wherein, Y is divalent hydrocarbon and R1 is a hydrogen atom, a halogen atom, a trifluoromethyl group, or an alkyl group or alkoxy group having at most 4 carbons).
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: February 23, 2010
    Assignee: Japan Science and Technology Agency
    Inventors: Shu Kobayashi, Haruro Ishitani, Yasuhiro Yamashita
  • Patent number: 7663008
    Abstract: A method of catalytic reaction uses a micro-reactor (1) with a metal catalyst (5) or a metal complex catalyst (5) as a solid phase supported on the inner wall (4c) of a channel (4), a solution (7) dissolving a reactant as a liquid phase and hydrogen (9) as a gas phase are flown through the channel (4) in pipe flow state, and the reaction of the solution (7) and the gas (9) accelerated by the metal catalyst (5) or the metal complex catalyst (5) is conducted by three phase catalytic reaction of solid-liquid-gas phases. The metal catalyst (5) or the metal complex catalyst (5) is incorporated in a polymer, and hydrogenation reaction by three phase catalytic reductive reaction of a substance to be reduced can be conducted in short time at good yield. For hydrogenation reaction of unsaturated organics, the rate of reaction and yield are high when palladium catalyst is used, and carbonylation reaction can be conducted if carbon monoxide is used instead of hydrogen.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: February 16, 2010
    Assignee: Japan Science and Technology Agency
    Inventors: Shu Kobayashi, Yuichiro Mori, Takehiko Kitamori, Masaharu Ueno, Kuniaki Okamoto
  • Patent number: 7659424
    Abstract: [PROBLEMS] To provide a novel method for the allylation of N-acylhydrazones by which enantioselectively allylated N-acylhydrazines can be efficiently obtained. [MEANS FOR SOLVING PROBLEMS] A method for the production of enantioselectively allylated N-acylhydrazines represented by the general formula [3]: [wherein R0 is an optionally substituted hydrocarbon group, an optionally substituted heterocyclic group, or —COOR1 (wherein R1 is a hydrocarbon group); R2 is acyl; R3 and R4 are each hydrogen, or one of R3 and R4 is hydrogen and the other is a hydrocarbon group; and R5 and R6 are each independently hydrogen or a hydrocarbon group], characterized by reacting an N-acylhydrazone represented by the general formula [1]: [wherein R0 and R2 are as defined above] with an allylating agent such as allyltrichlorosilane or crotyltrichlorosilane in the presence of a chiral phosphine oxide.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: February 9, 2010
    Assignee: Japan Science and Technology Agency
    Inventors: Shu Kobayashi, Masaharu Sugiura
  • Publication number: 20100029968
    Abstract: An asymmetric reaction catalyst is obtained by mixing a pentavalent niobium compound and an optically active triol or tetraol having a binaphthol structure of R or s configuration, and the triol is represented by the following formula: wherein, Y is divalent hydrocarbon and RI is a hydrogen atom, a halogen atom, a trifluoromethyl group, or an alkyl group or alkoxy group having at most 4 carbons.
    Type: Application
    Filed: September 28, 2009
    Publication date: February 4, 2010
    Applicant: Japan Science and Technology Agency
    Inventors: Shu Kobayashi, Haruro Ishitani, Yasuhiro Yamashita
  • Publication number: 20090318729
    Abstract: The invention provides a novel immobilized Lewis acid catalyst which exhibits high catalytic activity in an aqueous solution and which permits recovery and reuse or long-term continuous use. The invention relates to an immobilized Lewis acid catalyst comprising a solid substance and a Lewis acid supported on the surface of the solid substance by chemical bonding, wherein the surface of the solid substance and the peripheries of the Lewis acid are coated with an ionic liquid, more specifically, an immobilized Lewis acid catalyst comprising a solid substance such as silica gel or an organic polymer and a Lewis acid stable even in water which is supported on the surface of the solid substance by chemical bonding, wherein the surface of the solid substance and the peripheries of the Lewis acid are completely or partially coated with a hydrophobic ionic liquid; a process for the production of the catalyst; use thereof; and a process for the preparation of compounds with the catalyst.
    Type: Application
    Filed: March 12, 2007
    Publication date: December 24, 2009
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Shu Kobayashi, Yuichiro Mori, Gu Yanlong
  • Publication number: 20090143607
    Abstract: The present invention provides a polysilane-supported transition metal catalysts or a polysilane/inorganic compound-supported transition metal catalysts, wherein various types of transition metals are supported by polysilane compounds, or combination of polysilanes and inorganic compounds. The catalysts of the present invention are hardly soluble in hydrocarbons and alcohols and are useful as catalysts in heterogeneous system for various organic synthetic reactions using the above solvents. Polysilanes supporting transition metals are easily crosslinkable by thermal treatment, microwave irradiation, UV irradiation or chemical methods such as hydrosilylation reaction and are changed to be insoluble in various solvents keeping high catalytic activity. Moreover, the stability and operability of polysilane-supported transition metal catalysts will be improved by the support thereof on inorganic compounds.
    Type: Application
    Filed: February 27, 2007
    Publication date: June 4, 2009
    Inventors: Shu Kobayashi, Hidekazu Oyamada, Ryo Akiyama, Takeshi Naito
  • Patent number: 7541307
    Abstract: A silicon enolate represented by the following formula (Formula 1) (in the formula, R5 to R7 represent hydrogen atoms, aliphatic hydrocarbon groups, monocyclic or polycyclic alicyclic hydrocarbon groups, monocyclic or polycyclic aromatic or aromatic-aliphatic hydrocarbon groups or heterocyclic groups, R5 and R7 are different, R6 is not a hydrogen atom, each R8 may be identical or different and represents a methyl group, ethyl group or isopropyl group) and formaldehyde are allowed to react in an aqueous solution or a mixed solvent of water and an organic solvent in the presence of a catalyst obtained by mixing a ligand comprising a chiral bipyridine compound or its antipode and Bi(OTf)3.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: June 2, 2009
    Assignee: Japan Science and Technology Agency
    Inventors: Shu Kobayashi, Kei Manabe
  • Patent number: 7488698
    Abstract: A microencapsulated Group VIII metal catalyst which is stable even in air, easy to recover, and reusable is disclosed. It comprises a polymer with side chains containing an aromatic substituent, and a metal catalyst comprising a Group VIII metal encapsulated in to this polymer.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: February 10, 2009
    Assignee: Japan Science and Technology Corporation
    Inventor: Shu Kobayashi
  • Patent number: 7470646
    Abstract: The objective is to incarcerate a Lewis acid metal in a polymer and to make this catalyst recoverable while maintaining its function as a Lewis acid metal catalyst. The present invention is a polymer-incarcerated Lewis acid metal catalyst in which a Lewis acid metal is incarcerated in a crosslinked polymer and the crosslinked polymer is crosslinked using the crosslinking groups contained in a crosslinkable polymer. The polymer incarcerated Lewis acid metal catalyst is characterized by the crosslinkable polymer containing at least one type of monomer unit containing hydrophobic substituents and hydrophilic substituents containing crosslinking groups, and the hydrophobic substituents contain aromatic substituents. This crosslinkable polymer preferably comprises at least one type of monomer unit containing hydrophobic substituents and hydrophilic substituents containing crosslinking groups and a monomer unit containing hydrophobic substituents.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: December 30, 2008
    Assignee: Japan Science and Technology Agency
    Inventors: Shu Kobayashi, Ryo Akiyama, Nobuyuki Kawai, Masahiro Takeuchi
  • Publication number: 20080269496
    Abstract: The present invention presents a catalyst that allows asymmetric hydroxymethylation reactions to progress with excellent asymmetric selectivity and a production method for optically active hydroxymethylated compounds using the catalyst. Optically active hydroxymethylated compounds are obtained with excellent asymmetric selectivity by using a catalyst obtained by mixing chiral ligands (for example, chemical formula 4) with scandium triflate and the like.
    Type: Application
    Filed: January 27, 2005
    Publication date: October 30, 2008
    Inventors: Shu Kobayashi, Kei Manabe
  • Patent number: 7419933
    Abstract: A practical chiral zirconium catalyst that can maintain its high catalytic activity even after long-term storage, which is stable in air and storable for a long period of time, and recoverable and reusable after reaction, is provided.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: September 2, 2008
    Assignee: Japan Science and Technology Agency
    Inventor: Shu Kobayashi
  • Patent number: 7414145
    Abstract: A method of an enantioselective nucleophilic addition reaction to carbonyl, which enables an asymmetric synthesis of an optically active ?-hydroxy-?-keto acid ester, an optically active ?-hydroxy-?-amino acid ester, hydroxydiketone compounds, etc. being useful as a raw material or synthesis intermediate for producing a pharmaceutical preparation, an agricultural chemical, a fragrance, a functional polymer or the like. In this method, the nucleophilic addition reaction of enamide compound accompanied by hydroxyl (—OH) formation to carbonyl is carried out in the presence of a chiral catalyst with copper or nickel.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: August 19, 2008
    Assignee: Japan Science and Technology Agency
    Inventor: Shu Kobayashi
  • Publication number: 20080139835
    Abstract: A silicon enolate represented by the following formula (Formula 1) (in the formula, R5 to R7 represent hydrogen atoms, aliphatic hydrocarbon groups, monocyclic or polycyclic alicyclic hydrocarbon groups, monocyclic or polycyclic aromatic or aromatic-aliphatic hydrocarbon groups or heterocyclic groups, R5 and R7 are different, R6 is not a hydrogen atom, each R8 may be identical or different and represents a methyl group, ethyl group or isopropyl group) and formaldehyde are allowed to react in an aqueous solution or a mixed solvent of water and an organic solvent in the presence of a catalyst obtained by mixing a ligand comprising a chiral bipyridine compound or its antipode and Bi(OTf)3.
    Type: Application
    Filed: January 27, 2006
    Publication date: June 12, 2008
    Inventors: Shu Kobayashi, Kei Manabe
  • Patent number: 7375244
    Abstract: To present a reaction system that efficiently catalyzes an enantio selective asymmetric nucleophilic addition reaction of an ?-iminophosphonic acid ester. An optically active ?-amino-?-oxophosphonic acid derivative is produced through an asymmetric addition reaction of an ?-iminophosphonic acid ester and a nucleophilic agent (for example, a silyl enol ether).
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: May 20, 2008
    Assignee: Japan Science and Technology Agency
    Inventor: Shu Kobayashi
  • Patent number: 7351831
    Abstract: An intramolecular [3+2] cycloaddition reaction of a hydrazone is carried out under a mild condition with a high stereoselectivity and yield by reacting a hydrazone derivative in the presence of an asymmetric catalyst system obtained by mixing a zirconium alkoxide represented by the following formula (I): Zr(OR)4 ??(I) (wherein R is a hydrocarbon group which may have a substituent) with a binaphthol derivative represented by the following formula (II): (wherein Y1 and Y2 are each identical or different and denote a hydrogen atom or a halogen atom, and at least one of Y1 and Y2 denotes a halogen atom).
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: April 1, 2008
    Assignee: Japan Science and Technology Agency
    Inventors: Shu Kobayashi, Yasuhiro Yamashita, Haruro Ishitani