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シリレン-イソシアニド錯体を用いた新規な含ケイ素多重結合化学種の合成とその性質

Research Project

Project/Area Number 13740353
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Organic chemistry
Research InstitutionKyoto University

Principal Investigator

武田 亘弘  京都大学, 化学研究所, 助手 (80304731)

Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2002: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2001: ¥1,100,000 (Direct Cost: ¥1,100,000)
Keywords立体保護 / 速度論的安定化 / シラボレン / ケイ素-ホウ素二重結合 / シリレン / シリルアニオン / ホウ素 / ケイ素 / シリレン-イソシアニド錯体 / ジハロシリルボラン / ジハロシリルボラン-イソシアニド錯体
Research Abstract

本研究では、申請者らがこれまで種々の高周期典型元素多重結合の安定化に応用してきた立体保護基である2,4,6-トリス【ビス(トリメチルシリル)メチル】フェニル(Tbt)基を用いることにより、未だ報告例の無いケイ素-ホウ素二重結合化合物(シラボレン)を合成しその性質を解明することを目的としている。平成13年度の本研究において申請者らは、シラボレンの前駆体となりうる化合物である1,2-ジハロシリルボラン-イソシアニド錯体1[Tbt(Mes)(X)SiBX(R)CNAr]の発生を、アルゴン下でのNMRにより確認することに成功した。しかし、1は空気中で不安定であり1の単離には至らなかった。本年度の研究においては、まずホウ素上にアミノ基を導入して立体的効果と電子的効果を併せ用いることにより、目的のシラボレンを安定な化合物として合成・単離することを検討した。しかしながら、その前駆体であるホウ素上にアミノ基を導入したシリルボラン2[Tbt(Mes)(Cl)SiB(Cl)TMP : TMP=2,2,6,6-テトラメチル-1-ピペリジル】もまた空気中で速やかに分解し、その単離には至らなかった。一方、申請者らはすでにシリルピナコールボラン3[Tbt(Mes)(Cl)SiBC_6H_<12>O_2]を安定な結晶として単離することに成功している。3をNa/K合金と反応させたところ、ホウ素置換シリルアニオン4[Tbt(Mes)(BC_6H_<12>O_2)Si^-]を経由したと考えられる化合物を得た。4に関しては、ケイ素-ホウ素二重結合を有するボリルアニオンとしての共鳴構造の寄与も可能となる化学種であるため、その構造・反応性に興味が持たれる。また、4は有機合成上重要な中間体であるホウ素置換カルボアニオンのケイ素類縁体であり、その応用にも興味が持たれる。今後、4の単離・構造および反応性の解明についてさらに検討を行なう予定である。

Report

(2 results)
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] Takahiro Sasamori: "Syntheses, Structures and Properties of Kinetically Stabilized Distibenes and Dibismuthenes, Novel Doubly Bonded System between Heavier Group 15 Elements"Bull.Chem.Soc.Jpn.. 75. 661-675 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Norio Nakata: "Synthesis and Properties of the First Stable Germabenzene"J.Am.Chem.Soc. 124. 6914-6920 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Norihiro Tokitoh: "Systematic Studies on Homo-and Heteronuclear Doubly Bonded Compounds of Heavier Group 15 Elements"Phosphorus, Sulfur and Silicon. 177. 1473-1476 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Kazuto Nagata: "Synthesis of Novel Platinum Dichalcogenido-Complexes by Taking Advantage of Bulky Phosphine Ligands"Phosphorus, Sulfur and Silicon. 177. 1859-1862 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Takahiro Sasamori: "Synthesis and Reaction of the First Stable Phosphabismuthene, a Novel Compound with Phosphorus-Bismuth Double Bond"Phosphorus, Sulfur and Silicon. 177. 2003-2004 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Norio Nakata: "Reactions of 2-Germanaphthalene with Elemental Sulfur and Selenium : Synthesis of Novel Cyclic Polychalcogenides Containing a Germanium, Trichalcogenagermolanes"Chem.Lett.. 818-819 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Nobuhiro Takeda: "Synthesis and Properties of the First 1-Silanaphthalene"Organometallics. 21. 4024-4026 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Norihiro Tokitoh: "Synthesis and Isolation of the First Germacyclopropabenzene : A Study to Elucidate the Intrinsic Factor for the Ring Deformation of Cyclopropabenzene Skeletons"Organometallics. 21. 4309-4311 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Norio Nakata: "η^6-Germabenzene Complexes of Chromium and Molybdenum"Angew.Chem.Int.Ed.. 42. 115-117 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Norio Nakata: "Synthesis and Properties of the First Stable Neutral Germaaromatic Compound, 2-{2,4,6-Tris[bis(trimethylsilyl)methyl]phenyl}-2-germanaphthalene"Organometallics. 22. 481-489 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Kazuto Nagata: "Unusual Oxidation of Dichalcogenido Complexes of Platinum"Chem.Lett.. 32. 170-171 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Tomoyuki Tajima: "The First Examples of Stable Benzenes Fused with Two Three-membered Rings : Synthesis and Structures of the Two Stereoisomers of Bis(silacyclopropa)benzenes"Chem.Lett.. 32. 220-221 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Takahiro Sasamori: "Synthesis and Reactions of New Diphosphenes Bearing Extremely Bulky Substituents"J.Phys.Org.Chem. (印刷中).

    • Related Report
      2002 Annual Research Report
  • [Publications] Norio Nakata: "Reaction of Stable Germabenzene with Chalcogens : Synthesis and Structure of a Novel Germanium Analog of Pentathiepane, 1,2,3,4,5,6-Pentathiagermepane"J.Organomet.Chem. (印刷中).

    • Related Report
      2002 Annual Research Report
  • [Publications] Norihiro Tokitoh: "Formation of Antimony-Sulfur Double-Bond Compounds and Their Trapping with Nitrile Oxides"Heteroatom Chem.. 12. 244-249 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Nobuhiro Takeda: "Reaction of Stable Silylene-Isocyanide Complexes with Boranes: Synthesis and Pro of the First Stable Silylborane-Isocyanide Complexes"Chem. Lett.. 2001. 1076-1077 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Norio Nakata: "Synthesis and Structure of a Kinetically Stabilized 2-Germanaphthalene : the First Stable Neutral Germaaromatic Compound"Organometallics. 20. 5507-5509 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Kazuto Nagata: "Syntheses and Crystal Structures of the First Disulfur and Diselenium Complexes of Platinum"Angew. Chem. Int. Ed.. 41. 136-138 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Takahiro Sasamori: "Synthesis and Structure of the First Stable Phosphabismuthene"Angew. Chem. Int. Ed.. 41. 139-141 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Norihiro Tokitoh: "Synthesis of Kinetically Stabilized Silaneselone and Silanetellone"Chem. Lett.. 2002. 34-35 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Nobuhiro Takeda: "The First Stable 9-Silaanthracene"Organometallics. 21. 256-258 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Norihiro Tokitoh: "Synthesis and Characterization of an Extremely Hindered Tetraaryl-substitutcd Dige and Its Unique Properties in the Solid State and in Solution"Polyhedron. (印刷中).

    • Related Report
      2001 Annual Research Report
  • [Publications] Takahiro Sasamori: "Syntheses, Structures and Properties of Kinetically Stabilized Distibenes and Dibisrmuthenes, Novel Doubly Bonded Systems between Heavier Group 15 Elements"Bull. Chem. Soc. Jpn.. (印刷中).

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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