Patents by Inventor Norio Miyaura

Norio Miyaura 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).

  • Patent number: 8507680
    Abstract: The present invention provides a production process of a heteroaryl mono- or diboron compound comprising an aromatic heterocyclic compound and a boron compound in the form of bis(pinacolate)diboron or pinacolate diborane in the presence of a iridium-containing catalyst and a ligand such as a bipyridyl ligand. The reaction is conducted in a single step under mild conditions and allows for changing the charged ratios of the raw materials.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: August 13, 2013
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Norio Miyaura, Tatsuo Ishiyama
  • Patent number: 8207337
    Abstract: [Problem] To provide an organoboron compound-containing reagent for organic synthesis reactions which undergoes no trimerization with dehydration, does not necessitate activation with a base, and is stable and highly active. [Means for Solving Problems] The reagent for organic synthesis reactions contains an organic triol borate salt represented by any of the general formulae (I) to (III) and general formula (XVI): (wherein R1 represents alkyl, alkenyl, etc.; R2 represents optionally substituted alkyl, alkenyl, alkynyl, etc. or represents hydrogen; m+ represents an alkaline metal ion, phosphonium ion, or given ammonium ion; M2+ represents an alkaline earth metal; X represents halogen or alkoxide; Y represents an alkali metal ion, etc.; A represents optionally substituted methylene; and n represents an integer).
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: June 26, 2012
    Assignee: Wako Pure Chemical Industries, Ltd.
    Inventors: Norio Miyaura, Yasunori Yamamoto
  • Publication number: 20120142924
    Abstract: The present invention provides a production process of a heteroaryl mono- or diboron compound comprising an aromatic heterocyclic compound and a boron compound in the form of bis(pinacolate)diboron or pinacolate diborane in the presence of a iridium-containing catalyst and a ligand such as a bipyridyl ligand. The reaction is conducted in a single step under mild conditions and allows for changing the charged ratios of the raw materials.
    Type: Application
    Filed: February 9, 2012
    Publication date: June 7, 2012
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Norio MIYAURA, Tatsuo Ishiyama
  • Patent number: 8143407
    Abstract: The present invention provides an economically and industrially superior simple process that enables the selective production of an aromatic heterocyclic monoboron compound and aromatic heterocyclic diboron compound at a satisfactory yield and in a desired ratio by reacting an aromatic heterocyclic compound and a boron compound in a single step under mild conditions while changing only the charged ratios of the raw materials. The present invention provides a production process of a heteroaryl mono- or diboron compound comprising an aromatic heterocyclic compound and a boron compound in the form of bis(pinacolate)diboron or pinacolate diborane in the presence of a iridium-containing catalyst and a ligand such as a bipyridyl ligand.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: March 27, 2012
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Norio Miyaura, Tatsuo Ishiyama
  • Patent number: 7964743
    Abstract: Compounds represented by the following general formula (1a) or (1b). A complex comprising a center metal of rhodium and a compound represented by the following general formula (1a) or (1b) as a ligand. A catalyst for optically active beta-substituted carbonyl compound synthesis and catalyst for asymmetric 1, 2 addition reaction being composed of the complex. A method of production of an optically active beta-aryl compound from an alpha, beta-unsaturated compound and an aryl-boronic acid derivative and method of production of an optically active aryl alcohol compound from an aldehyde compound and aryl boronic acid derivatives using the catalyst. A complex comprising a center metal of palladium and a compound represented by the following general formula (1a) or (1b) as a ligand. A catalyst for asymmetric allylic substitution reaction being composed of the complex.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: June 21, 2011
    Assignee: Japan Science and Technology Agency
    Inventors: Norio Miyaura, Yasunori Yamamoto
  • Publication number: 20100121069
    Abstract: An electron withdrawing group substituted ?-arylolefin derivative represented by general formula (I) (in the formula, Ar1 represents an aryl group, E represents a formyl, acyl and so on) is allowed to react with an arylboronic acid represented by general formula (II) Ar2—BXmMn in the general formula (IV) RhYoL1p (Chiraphos)q (in the formula, Y represents ClO4, BF4, PF6, SbF6, OTf, halogen atom, hydroxyl group, alkoxy group or acyloxy group, L1 represents an organic ligand) to produce an optically active ?-diaryl electron withdrawing group substituted compound represented by general formula (V)
    Type: Application
    Filed: July 13, 2007
    Publication date: May 13, 2010
    Inventors: Norio Miyaura, Yasunori Yamamoto, Takashi Nishikata, Takahiro Itoh
  • Publication number: 20100087646
    Abstract: [Problem] To provide an organoboron compound-containing reagent for organic synthesis reactions which undergoes no trimerization with dehydration, does not necessitate activation with a base, and is stable and highly active. [Means for Solving Problems] The reagent for organic synthesis reactions contains an organic triol borate salt represented by any of the general formulae (I) to (III) and general formula (XVI): (wherein R1 represents alkyl, alkenyl, etc.; R2 represents optionally substituted alkyl, alkenyl, alkynyl, etc. or represents hydrogen; m+ represents an alkaline metal ion, phosphonium ion, or given ammonium ion; M2+ represents an alkaline earth metal; X represents halogen or alkoxide; Y represents an alkali metal ion, etc.; A represents optionally substituted methylene; and n represents an integer).
    Type: Application
    Filed: January 28, 2008
    Publication date: April 8, 2010
    Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD.
    Inventors: Norio Miyaura, Yasunori Yamamoto
  • Patent number: 7662998
    Abstract: In synthesis of hexaalkylborazine represented by the chemical formula 2 from a borazine compound represented by the chemical formula 1, a borazine compound represented by the chemical formula 1 is reacted with an alkene compound, in the presence of a catalyst. Wherein R1s may be the same or different and each R1 represents an alkyl group; and each R2 represents a hydrogen atom or an alkyl group, and at least one of R2s represents a hydrogen atom; and R3s may be the same or different and each R3 represents an alkyl group.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: February 16, 2010
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Norio Miyaura, Yasunori Yamamoto, Yasutaka Nakatani, Tetsuya Yamamoto
  • Publication number: 20100010224
    Abstract: The present invention provides an economically and industrially superior simple process that enables the selective production of an aromatic heterocyclic monoboron compound and aromatic heterocyclic diboron compound at a satisfactory yield and in a desired ratio by reacting an aromatic heterocyclic compound and a boron compound in a single step under mild conditions while changing only the charged ratios of the raw materials. The present invention provides a production process of a heteroaryl mono- or diboron compound comprising an aromatic heterocyclic compound and a boron compound in the form of bis(pinacolate)diboron or pinacolate diborane in the presence of a iridium-containing catalyst and a ligand such as a bipyridyl ligand.
    Type: Application
    Filed: September 16, 2009
    Publication date: January 14, 2010
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Norio MIYAURA, Tatsuo ISHIYAMA
  • Patent number: 7612218
    Abstract: The present invention provides an economically and industrially superior simple process that enables the selective production of an aromatic heterocyclic monoboron compound and aromatic heterocyclic diboron compound at a satisfactory yield and in a desired ratio by reacting an aromatic heterocyclic compound and a boron compound in a single step under mild conditions while changing only the charged ratios of the raw materials. The present invention provides a production process of a heteroaryl mono- or diboron compound comprising an aromatic heterocyclic compound and a boron compound in the form of bis(pinacolate)diboron or pinacolate diborane in the presence of a iridium-containing catalyst and a ligand such as a bipyridyl ligand.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: November 3, 2009
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Norio Miyaura, Tatsuo Ishiyama
  • Publication number: 20090156849
    Abstract: Compounds represented by the following general formula (1a) or (1b). A complex comprising a center metal of rhodium and a compound represented by the following general formula (1a) or (1b) as a ligand. A catalyst for optically active beta-substituted carbonyl compound synthesis and catalyst for asymmetric 1, 2 addition reaction being composed of the complex. A method of production of an optically active beta-aryl compound from an alpha, beta-unsaturated compound and an aryl-boronic acid derivative and method of production of an optically active aryl alcohol compound from an aldehyde compound and aryl boronic acid derivatives using the catalyst. A complex comprising a center metal of palladium and a compound represented by the following general formula (1a) or (1b) as a ligand. A catalyst for asymmetric allylic substitution reaction being composed of the complex.
    Type: Application
    Filed: February 17, 2006
    Publication date: June 18, 2009
    Inventors: Norio Miyaura, Yasunori Yamamoto
  • Publication number: 20080188682
    Abstract: In synthesis of hexaalkylborazine represented by the chemical formula 2 from a borazine compound represented by the chemical formula 1, a borazine compound represented by the chemical formula 1 is reacted with an alkene compound, in the presence of a catalyst. Wherein R1s may be the same or different and each R1 represents an alkyl group; and each R2 represents a hydrogen atom or an alkyl group, and at least one of R2s represents a hydrogen atom; and R3s may be the same or different and each R3 represents an alkyl group.
    Type: Application
    Filed: October 28, 2005
    Publication date: August 7, 2008
    Applicant: Nippon Shokubai Co., Ltd.
    Inventors: Norio Miyaura, Yasunori Yamamoto, Yasutaka Nakatani, Tetsuya Yamamoto
  • Publication number: 20050148775
    Abstract: The present invention provides an economically and industrially superior simple process that enables the selective production of an aromatic heterocyclic monoboron compound and aromatic heterocyclic diboron compound at a satisfactory yield and in a desired ratio by reacting an aromatic heterocyclic compound and a boron compound in a single step under mild conditions while changing only the charged ratios of the raw materials. The present invention provides a production process of a heteroaryl mono- or diboron compound comprising an aromatic heterocyclic compound and a boron compound in the form of bis(pinacolate)diboron or pinacolate diborane in the presence of a iridium-containing catalyst and a ligand such as a bipyridyl ligand.
    Type: Application
    Filed: March 5, 2003
    Publication date: July 7, 2005
    Inventors: Norio Miyaura, Tatsuo Ishiyama
  • Patent number: 6693210
    Abstract: Provided are a novel triphenyl phosphine derivative synthesized from a triphenylphosphine and a hydroxy-containing lactone; a palladium and a nickel complexes comprising the derivative as a ligand; and a process for preparing a biaryl derivative using the complex as a catalyst. A product can be easily separated from a catalyst or a phosphorus compound, and biaryl derivative can be synthesized in a higher yield, by using the complex of the present invention as a catalyst.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: February 17, 2004
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventor: Norio Miyaura
  • Publication number: 20030065208
    Abstract: Provided are a novel triphenyl phosphine derivative synthesized from a triphenylphosphine and a hydroxy-containing lactone; a palladium and a nickel complexes comprising the derivative as a ligand; and a process for preparing a biaryl derivative using the complex as a catalyst. A product can be easily separated from a catalyst or a phosphorus compound, and biaryl derivative can be synthesized in a higher yield, by using the complex of the present invention as a catalyst.
    Type: Application
    Filed: September 13, 2002
    Publication date: April 3, 2003
    Inventor: Norio Miyaura