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Synthesis of Functional Aromatic Heterocyclic Compounds by Asymmetric Oxidation Coupling

Research Project

Project/Area Number 18K14220
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 33020:Synthetic organic chemistry-related
Research InstitutionOsaka University

Principal Investigator

Sako Makoto  大阪大学, 産業科学研究所, 助教 (20804090)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsキラルバナジウム錯体 / 酸化的カップリング / エナンチオ選択的反応 / 3-ヒドロキシカルバゾール / 2-ナフトール / ラジカル-アニオンカップリング / 炭素-炭素結合形成反応 / 酸化的ヘテロカップリング / ヒドロキシカルバゾール / 円偏光発光 / バナジウム / カルバゾール / キラルビフェノール / 酸化カップリング / 機能性芳香族複素環 / ヘリセン / フェノール誘導体
Outline of Final Research Achievements

We have developed a highly enantioselective and catalytic oxidative hetero-coupling reaction of functionalized 3-hydroxycarbazoles and 2-naphthols using newly prepared mononuclear vanadium complexes. The reaction was successfully conducted utilizing a 1:1 ratio of two starting materials to preferentially afford axially chiral hetero-coupling products in up to 98% yield with up to 94:6 er. The present catalytic system exhibited good tolerance for functional groups such as halogens (Br and I), (pinacolate)boryl, and free phenolic hydroxy groups. Lastly, the mechanistic studies supported a radical-anion coupling process.

Academic Significance and Societal Importance of the Research Achievements

本研究成果で得られた成果は、2種類の異なるアレノールの酸化的ヘテロカップリングを高い化学、位置、および立体選択性で触媒的に進行させた世界でも数少ない成功例である。開発した本触媒的不斉合成法で得られる軸性キラリティーを有するビアレノール誘導体は、生物活性化合物や機能性材料に利用可能であり、本手法は新規化合物群の効率的合成法として期待される。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (13 results)

All 2020 2019 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (12 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Exploration of flow reaction conditions using machine-learning for enantioselective organocatalyzed Rauhut-Currier and [3+2] annulation sequence2020

    • Author(s)
      Kondo Masaru、Wathsala H. D. P.、Sako Makoto、Hanatani Yutaro、Ishikawa Kazunori、Hara Satoshi、Takaai Takayuki、Washio Takashi、Takizawa Shinobu、Sasai Hiroaki
    • Journal Title

      Chemical Communications

      Volume: 56 Issue: 8 Pages: 1259-1262

    • DOI

      10.1039/c9cc08526b

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Chiral Dinuclear Vanadium Complex-mediated Oxidative Coupling of Resorcinols2019

    • Author(s)
      Sako, M.; Aoki, T.; Zumbragel, N.; Schober, L.; Groeger, H.; Takizawa, S.; Sasai, H.
    • Organizer
      THE 47th NAITO CONFERENCE ON C-H Bond Activation and Transformation
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Facile Enantioselective Synthesis of Hetero[9]helicenes Using Redox/acid Cooperative Catalysts2019

    • Author(s)
      Sako, M.; Tamori, Y.; Higashida, K.; Takizawa, S.; Sasai, H
    • Organizer
      31st International Symposium on Chirality
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 6Development of Vanadium-catalyzed Organic Reaction in Water2019

    • Author(s)
      Sako, M.; Zumbraegel, N.; Takiishi, T.; Schober, S.; Groeger, H.; Takizawa, S.; Sasai, H.
    • Organizer
      The 4th International Symposium on Process Chemistry
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Asymmetric Reactions Using Chiral Vanadium Complex as Acid Catalyst2019

    • Author(s)
      Sako, H.; Takiishi, T.; Schober, L.; Park, H.; Groeger, H.; Takizawa, S.; Sasai, H.
    • Organizer
      27th International Society of Heterocyclic Chemistry Congress
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Chiral Vanadium Complex-mediated oxa-Piancatelli Reaction and Pictet-Spengler Reaction/Aromatization Sequence2019

    • Author(s)
      Sako, M.; Schober, L.; Takiishi, T.; Groeger, H.; Takizawa, S.; Sasai, H.
    • Organizer
      13th International CeBiTec Symposium ~ Multi-Step Syntheses in Biology & Chemistry, An International Young Investigator Conference ~
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] キラルバナジウム触媒を用いるフェノール類の酸化的ヘテロカップリング反応2019

    • Author(s)
      東田恵伍、佐古真、滝澤忍、笹井宏明
    • Organizer
      第115回有機合成シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] キラルバナジウム錯体の酸触媒能を活用する不斉反応の開発2019

    • Author(s)
      佐古真、瀧石朋大、Lukas Schober、Harald Groeger、滝澤忍、笹井宏明
    • Organizer
      シンポジウム モレキュラー・キラリティー2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] キラルバナジウム触媒を用いるフェノール類の酸化的ヘテロカップリング反応2019

    • Author(s)
      佐古真、東田恵伍、滝澤忍、笹井宏明
    • Organizer
      第66回有機金属化学討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Vanadium Complex-catalyzed Enantioselective Synthesis of Hetero[9]helicenes and Their Physical Properties2019

    • Author(s)
      Sako, M.; Kumar, A.; Takizawa, S.; Sasai, H.
    • Organizer
      日本化学会第100春季年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] キラルバナジウム触媒を用いるアレノール類の酸化的ヘテロカップリング反応2019

    • Author(s)
      東田恵伍、佐古真、滝澤忍、笹井宏明
    • Organizer
      日本薬学会第140年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Chiral Vanadium Complex-catalyzed Enantioselective Oxidative Hetero-coupling Reactions of Phenols2019

    • Author(s)
      Higashida, K.; Sako, M.; Takizawa, S.; Sasai, H.
    • Organizer
      日本化学会第99春季年会
    • Related Report
      2018 Research-status Report
  • [Presentation] キラルバナジウム触媒を用いる酸化的ヘテロカップリング反応の開発2018

    • Author(s)
      東田恵伍、佐古真、滝澤忍、笹井宏明
    • Organizer
      第38回有機合成若手セミナー
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2021-02-19  

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