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Precise organic synthesis by a cooperative system with a cap-like catalyst attachment and a confined cavity

Research Project

Project/Area Number 21K14641
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 34010:Inorganic/coordination chemistry-related
Research InstitutionThe University of Tokyo

Principal Investigator

Takezawa Hiroki  東京大学, 大学院工学系研究科(工学部), 特任講師 (60813897)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2022: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords自己組織化 / ホスト-ゲスト / 触媒 / 金属酵素 / 非共有結合性相互作用 / 遷移金属 / 分子認識 / イオン認識 / 遷移金属触媒 / ランタノイド / ホストゲスト / 有機反応 / 触媒反応 / 立体選択的反応
Outline of Research at the Start

有機合成化学における一つの目標到達点は、ある基質に対し狙った部位に狙った官能基を自在に修飾できることである。本研究では、 孤立空孔をもつ中空錯体と蓋状のアタッチメント触媒を組み合わせることで、通常の手法では制御し得ない位置・立体選択的な分子変換を可能にする。疎水空孔を持つカチオン性中空錯体の開口部に、開口部のカチオン部位と相補的な位置にアニオン部位を導入 した金属触媒を静電相互作用により固定化し、基質と活性点の位置関係を精密に制御する。中空錯体による分子閉じ込め効果と精密に配置された触媒活性部位を同時に利用した選択的カスケード環化や不活性分子の位置・立体選択的反応を開拓する。

Outline of Final Research Achievements

In this study, we aimed to control the activity and selectivity of reactions mediated by a transition metal center by using a combination of a self-assembled coordination cage and cap-like anions that specifically interact at the portal of the cage. We synthesized new cap-like anions capable of introducing metal ions into the cage portals and examined their effects. Using the cap-like ions, hydrophilic metal species such as lanthanoid ions were successfully introduced into the interior or the portal of the cage. Furthermore, cap-like ions capable of introducing a transition metal center were synthesized. When a copper(II) ion was introduced into the cap ion, an oxidation reaction was facilitated when combined with the coordination cage.

Academic Significance and Societal Importance of the Research Achievements

本研究は、単工程で、すなわち低環境負荷で、高機能な分子を合成するための反応場を作り出すための指針を与える研究である。金属酵素のような機能を持つ空間をシンプルな人工系で作り上げることで、堅牢な合成手法として用いることができるようになる。本研究成果は、その概念実証に成功したと言える内容であり、この手法を用いた精密有機合成が様々な標的について試されるようになると考えられる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (47 results)

All 2024 2023 2022 2021

All Journal Article (9 results) (of which Peer Reviewed: 9 results,  Open Access: 2 results) Presentation (37 results) (of which Int'l Joint Research: 4 results,  Invited: 4 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Selective Synthesis and Functionalization of an Acyclic Methylene‐Bridged‐Arene Trimer in a Cage2024

    • Author(s)
      Takezawa Hiroki、Iizuka Kenta、Fujita Makoto
    • Journal Title

      Angewandte Chemie International Edition

      Volume: 63 Issue: 6

    • DOI

      10.1002/anie.202319140

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthetic Modulation of an Unstable Dehydrosecodine‐type Intermediate and Its Encapsulation into a Confined Cavity Enable Its X‐ray Crystallographic Observation2023

    • Author(s)
      Tay Gavin、Wayama Toshiaki、Takezawa Hiroki、Yoshida Satoshi、Sato Sota、Fujita Makoto、Oguri Hiroki
    • Journal Title

      Angewandte Chemie International Edition

      Volume: 62 Issue: 32

    • DOI

      10.1002/anie.202305122

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tetradehydro-Diels-Alder Reactions of Flexible Arylalkynes via Folding Inside a Molecular Cage2023

    • Author(s)
      Genov Georgi R.、Takezawa Hiroki、Hayakawa Harumi、Fujita Makoto
    • Journal Title

      Journal of the American Chemical Society

      Volume: 145 Issue: 31 Pages: 17013-17017

    • DOI

      10.1021/jacs.3c06301

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chemical Site-Differentiation of Calix[4]arenes through Enforced Conformations by Confinement in a Cage2023

    • Author(s)
      Iizuka Kenta、Takezawa Hiroki、Fujita Makoto
    • Journal Title

      Journal of the American Chemical Society

      Volume: 145 Issue: 48 Pages: 25971-25975

    • DOI

      10.1021/jacs.3c10720

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Selective Confinement of Rare‐Earth‐Metal Hydrates by a Capped Metallo‐Cage under Aqueous Conditions2022

    • Author(s)
      Tabuchi Ryosuke、Takezawa Hiroki、Fujita Makoto
    • Journal Title

      Angewandte Chemie International Edition

      Volume: 61 Issue: 37

    • DOI

      10.1002/anie.202208866

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] A self-assembled coordination cage enhances the reactivity of confined amides <i>via</i> mechanical bond-twisting2022

    • Author(s)
      Tamura Hiroyuki、Takezawa Hiroki、Fujita Makoto、Ishikita Hiroshi
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 24 Issue: 35 Pages: 21367-21371

    • DOI

      10.1039/d2cp03126d

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Electrophilic Spirocyclization of a 2‐Biphenylacetylene via Conformational Fixing within a Hollow‐Cage Host2022

    • Author(s)
      Takezawa Hiroki、Fujii Yuya、Murase Takashi、Fujita Makoto
    • Journal Title

      Angewandte Chemie International Edition

      Volume: 61 Issue: 24

    • DOI

      10.1002/anie.202203970

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] An Ir3L2 complex with anion binding pockets: photocatalytic E-Z isomerization via molecular recognition2021

    • Author(s)
      H. Sunohara. K. Koyamada, H. Takezawa and M. Fujita
    • Journal Title

      Chemical Communications

      Volume: 57 Issue: 73 Pages: 9300-9302

    • DOI

      10.1039/d1cc03620c

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Molecular Confinement Effects by Self-Assembled Coordination Cages2021

    • Author(s)
      Takezawa Hiroki、Fujita Makoto
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 94 Issue: 10 Pages: 2351-2369

    • DOI

      10.1246/bcsj.20210273

    • NAID

      130008117268

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Introducing reactive metal centres into coordination cage cavities via a hexaanionic capping ligand2024

    • Author(s)
      Matthew Wootten、Hiroki Takezawa、Makoto Fujita
    • Organizer
      日本化学会第104春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] A Coordination Cage as a Crystalline Sponge2024

    • Author(s)
      Wei He、Hiroki Takezawa、Makoto Fujita
    • Organizer
      日本化学会第104春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 大環状分子を配座固定できる拡張中空錯体の固相テンプレート合成2024

    • Author(s)
      飯塚健太、竹澤浩気、藤田誠
    • Organizer
      日本化学会第104春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 可視光応答性Pt(II)中空錯体による基質の包接状態制御に基づく選択的光反応2024

    • Author(s)
      田中陸也、竹澤浩気、藤田誠
    • Organizer
      日本化学会第104春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 空孔包接による柔軟分子の折りたたみ配座を利用した相互作用点の集積とイオン認識2024

    • Author(s)
      中川崇弘、竹澤浩気、藤田誠
    • Organizer
      日本化学会第104春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] かご型錯体への無機クラスターの特異的包接と安定化2024

    • Author(s)
      木村直己、竹澤浩気、藤田誠
    • Organizer
      日本化学会第104春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Tetradehydro-Diels-Alder Reactions of Flexible Arylalkynes via Folding inside a Molecular Cage2023

    • Author(s)
      Georgi R. Genov、Hiroki Takezawa、Harumi Hayakawa、Makoto Fujita
    • Organizer
      錯体化学会第73回討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Solid-State Self-Assembly of Expanded Hollow Cages for Conformational Manipulation of Organic Macrocycles in Water2023

    • Author(s)
      Kenta Iizuka、Hiroki Takezawa、Makoto Fujita
    • Organizer
      錯体化学会第73回討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Visuallization of Host-Guest Chemistry: Facile Crystallization of Cage Hosts with Sticker Anions2023

    • Author(s)
      Kenta Iizuka、Hiroki Takezawa、Makoto Fujita
    • Organizer
      錯体化学会第73回討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Visualization of Confinement Effects in Coordination Cages via Sticker-Induced Crystallization2023

    • Author(s)
      Hiroki Takezawa
    • Organizer
      ICPAC Bali 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Selective, partial, and asymmetric functionalization of calix[4]arenes through conformational fixation in a self-assembled hollow cage2023

    • Author(s)
      Kenta Iizuka、Hiroki Takezawa、Makoto Fujita
    • Organizer
      The 18th International Symposium on Macrocyclic and Supramolecular Chemistry
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Photocatalytic reaction within a visible light-active M6L4 hollow cage2023

    • Author(s)
      Rikuya Tanaka、Hiroki Takezawa、Makoto Fujita
    • Organizer
      The 18th International Symposium on Macrocyclic and Supramolecular Chemistry
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Thermal Cyclization of Linear Arylalkynes Facilitated by Folding inside a Molecular Cage2023

    • Author(s)
      Georgi R. Genov, Hiroki Takezawa, Harumi Hayakawa, Makoto Fujita
    • Organizer
      日本化学会第103春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] かご型錯体の内部空孔を利用したカリックス[4]アレーン類の配座制御と反応制御2022

    • Author(s)
      飯塚健太、竹澤浩気、藤田誠
    • Organizer
      第19回ホスト-ゲスト・超分子化学シンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] 中空錯体空孔と三脚型蓋状アニオンの協働による特異的分子認識と構造制御2022

    • Author(s)
      竹澤浩気、田淵凌輔、谷口旺、藤田誠
    • Organizer
      第32回基礎有機化学討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] Molecular Manipulation by Confinement in a Coordination Cage for Precise Molecular Conversion2022

    • Author(s)
      竹澤浩気
    • Organizer
      錯体化学第72回討論会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Non-Covalent Introduction of a Metal Site to a Portal on a Coordination Cage by a Tripodal Capping Anion2022

    • Author(s)
      谷口旺、田淵凌輔、竹澤浩気、藤田誠
    • Organizer
      錯体化学第72回討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] 金属頂点を有する可視光応答性ホスト錯体の自己集合構築2022

    • Author(s)
      田中陸也、春原晴香、竹澤浩気、藤田誠
    • Organizer
      錯体化学第72回討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] Substrate-Specific Oxidation in a Coordination Cage by Capping the Portal with a Tripodal Copper Catalyst2022

    • Author(s)
      Wei He, Hiroki Takezawa, Makoto Fujita
    • Organizer
      日本化学会第103春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 中空錯体への包接による配座制御を介したカリックス[4]アレン類の非対称修飾2022

    • Author(s)
      飯塚健太、竹澤 浩気、藤田 誠
    • Organizer
      日本化学会第103春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] ルイス塩基性蓋状アニオンによるかご型錯体への金属イオン導入2022

    • Author(s)
      谷口旺、竹澤浩気、藤田誠
    • Organizer
      日本化学会第103春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] シクロメタル化白金(II)中空錯体を用いた触媒的可視光反応2022

    • Author(s)
      田中陸也、竹澤浩気、藤田誠
    • Organizer
      日本化学会第103春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] かご型錯体の空孔を用いた金属クラスターの合成と包接2022

    • Author(s)
      木村 直己、Wei He、竹澤浩気、藤田誠
    • Organizer
      日本化学会第103春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 孤立空間への閉じ込めによる分子操作と精密反応2022

    • Author(s)
      竹澤浩気
    • Organizer
      日本化学会第103春季年会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 中空錯体内孤立空間への閉じ込めによる分子操作と精密反応2022

    • Author(s)
      竹澤浩気
    • Organizer
      日本化学会第102春季年会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 可視光反応の効率化と制御に向けた含イリジウム多核ホスト錯体の構築2022

    • Author(s)
      春原晴香、竹澤浩気、藤田誠
    • Organizer
      日本化学会第102春季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] かご型錯体と蓋状アニオンの協働によるランタノイドイオンの選択的包接2022

    • Author(s)
      田淵凌輔、竹澤浩気、藤田誠
    • Organizer
      日本化学会第102春季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] カルバゾール積層構造を有するかご型錯体の自己集合構築2022

    • Author(s)
      川口悠伍、竹澤浩気、藤田誠
    • Organizer
      日本化学会第102春季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 中空錯体への包接によるメチレン架橋芳香族オリゴマーの配座制御と反応制御2022

    • Author(s)
      飯塚健太、竹澤浩気、藤田誠
    • Organizer
      日本化学会第102春季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] ルイス塩基部位を持つ蓋状アニオンを用いたかご型錯体開口部への金属サイト導入2022

    • Author(s)
      谷口旺、春原晴香、竹澤浩気、藤田誠
    • Organizer
      日本化学会第102春季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 水溶性シクロメタル化白金錯体を用いた中空ホスト錯体の迅速合成2022

    • Author(s)
      田中陸也、春原晴香、竹澤 浩気、藤田 誠
    • Organizer
      日本化学会第102春季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] かご型錯体の空孔を利用した柔軟なオリゴアレーン類の選択的合成と配座制御2021

    • Author(s)
      飯塚健太、竹澤浩気、藤田誠
    • Organizer
      第18回ホスト-ゲスト・超分子化学シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] Self-Assembly of Ruthenium- and Iridium-Based Multinuclear Hollow Complexes for Effective Photocatalytic Reactions in their Cavities2021

    • Author(s)
      春原晴香、竹澤浩気、藤田誠
    • Organizer
      錯体化学会第71回討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] Inclusion and structure control of cationic substrates by the cooperation of a cationic cage and an anionic cap2021

    • Author(s)
      田淵凌輔、竹澤浩気、藤田誠
    • Organizer
      錯体化学会第71回討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] プロペラ型アニオンキャップによるかご型錯体の機能拡張2021

    • Author(s)
      谷口旺、春原晴香、竹澤浩気、藤田誠
    • Organizer
      錯体化学会第71回討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] 二重壁構造を有する自己組織化錯体の逐次的構造変化2021

    • Author(s)
      田村 有佳梨、竹澤浩気、藤田誠
    • Organizer
      第31回基礎有機化学討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] Molecular Twisting by Confinement in a Coordination Cage toward Reactivity Control2021

    • Author(s)
      Takezawa Hiroki、Fujita Makoto
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] 結晶構造解析用試料、結晶構造解析用試料前駆体、結晶構造解析用試料の製造方法、及び結晶構造解析用試料作製キット2023

    • Inventor(s)
      藤田誠、竹澤浩気
    • Industrial Property Rights Holder
      藤田誠、竹澤浩気
    • Industrial Property Rights Type
      特許
    • Filing Date
      2023
    • Related Report
      2023 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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