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Innovative transformations using low-valent niobiums as synthetic catalysts

Research Project

Project/Area Number 25410122
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Synthetic chemistry
Research InstitutionKansai University

Principal Investigator

OBORA Yasushi  関西大学, 化学生命工学部, 教授 (50312418)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords触媒・化学プロセス / ニオブ触媒 / 低原子価ニオブ / 前周期金属触媒 / フィードストック / 効率的合成 / 合成触媒
Outline of Final Research Achievements

Development of manufacturing processs by using homegeneous transition-metal-catalyzed process is vital for green chemistry. However, the exsisting catalytic processes mainly depend on the use of precious metal resources. Therefore, development of a reactive common-metal-catalyzed process is a challenging target for synthetic chemists. In this study, we developed novel synthetic methodology for the preparation of active low-valent niobium compounds and their use as catalysts/reagents for innovative environmentally benign organic transformations.
In this study, we report the novel synthetic method for trimerization of isocyanates, 1,3-cyclohexadienes, pyrimidines, and amides from alkenes, alkynes, and nitriles by using the niobium species derived from pentaalkoxyniobium and pentachloroniobium as precursors.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (10 results)

All 2016 2015 2014 2013 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Acknowledgement Compliant: 2 results) Presentation (6 results) (of which Invited: 1 results)

  • [Journal Article] Niobium Complexes in Organic Transformations: From Stoichiometric Reactions to Catalytic [2+2+2] Cycloaddition Reactions2015

    • Author(s)
      Y. Satoh, Y. Obora*
    • Journal Title

      European Journal of Organic Chemistry

      Volume: 2015 Pages: 5041-5054

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] NbCl5-Mediated Amidation of Olefins with Nitriles to Secondary Amides2015

    • Author(s)
      K. Yasuda, Y. Obora*
    • Journal Title

      Journal of Organometallics Chemistry

      Volume: 775 Pages: 33-38

    • DOI

      10.1016/j.jorganchem.2014.10.017

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 低原子価ニオブ化合物の有機変換反応への利用~量論反応から触媒反応へ~2014

    • Author(s)
      佐藤靖,大洞康嗣*
    • Journal Title

      有機合成化学協会誌

      Volume: 72 Pages: 257-267

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Generation of Low-valent Alkoxy Niobium from Nb(OEt)5 and Grignard Reagents and Their Use as Catalysts in the Cyclotrimerization of Isocyanates2013

    • Author(s)
      M. Ozaki, Y. Obora,* Y. Tada, Y. Ishii
    • Journal Title

      Journal of Organometallic Chemistry

      Volume: 741-742 Pages: 109-113

    • DOI

      10.1016/j.jorganchem.2013.05.035

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] NbCl5を用いたニトリルとアルキンからのピリミジン誘導体合成2016

    • Author(s)
      藤麻織人、大洞康嗣
    • Organizer
      日本化学会第96春季年会
    • Place of Presentation
      同志社大学(京都府)
    • Year and Date
      2016-03-26
    • Related Report
      2015 Annual Research Report
  • [Presentation] ニオブ触媒によるオレフィンメタセシス反応2015

    • Author(s)
      千綿仁大郎,尾崎誠,大洞康嗣
    • Organizer
      第95日本化学会春季年会
    • Place of Presentation
      日本大学(千葉県)
    • Year and Date
      2015-03-28
    • Related Report
      2014 Research-status Report
  • [Presentation] NbCl5触媒によるアルキンとオレフィンとの高選択的環化付加反応2014

    • Author(s)
      亀井基史,大洞康嗣
    • Organizer
      石油学会関西支部第23回研究発表会日本エネルギー学会関西支部第59回研究発表会
    • Place of Presentation
      京都大学(京都府)
    • Year and Date
      2014-12-05
    • Related Report
      2014 Research-status Report
  • [Presentation] NbCl5触媒を用いたアルキンとオレフィンとの位置選択的[2+2+2]分子間環化付加反応2014

    • Author(s)
      亀井基史,大洞康嗣
    • Organizer
      第61回有機金属化学討論会
    • Place of Presentation
      九州大学(福岡県)
    • Year and Date
      2014-09-24
    • Related Report
      2014 Research-status Report
  • [Presentation] Pd-catalyzed Intermolecular Oxidative Olefin Amination with Amines using Molecular Oxygen as Terminal Oxidant

    • Author(s)
      Y. Obora
    • Organizer
      International Symposium on Catalysis and Fine Chemicals 2013 (C&FC 2013)
    • Place of Presentation
      Renmin University, Beijing, China
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Low-valent Niobium-catalyzed Selective Intermolecular Cycloadiition of Alkynes with Alkenes or Nitriles,

    • Author(s)
      Y. Satoh, Y. Obora,
    • Organizer
      International Symposium on Relations between Homogeneous and Heterogeneous Catalysis (ISHHC-16)
    • Place of Presentation
      Hokkaido University, Sapporo
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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