徹底的にトリクロロシリ化C1とC2の構成要素: ミュラー・ロチョウ直接プロセスを超えた
Isabelle Georg, Julian Teichmann, Markus Bursch1
1Mulliken Center for Theoretical Chemistry , Institut für Physikalische und Theoretische Chemie, Universität Bonn , Beringstrasse 4 , Bonn 53115 , Germany.
Journal of the American Chemical Society
|July 10, 2018
まとめ
六塩素ジラン (Si2Cl6) と塩化イオンの反応により,反応性シリコン中間産物が生成される. これらの中間物質は有価なポリシル化カルバニオンに変換され,複雑な有機シリコン化合物の合成を可能にします.
科学分野:
- オルガノシリコン化学
- 合成無機化学
- 反応性中間物質
背景:
- ヘキサクロドジラン (Si2Cl6) のシリコン-シリコン結合の異解は,反応性シリコン種を生成する重要なステップです.
- これらの中間物質の反応性を理解することは,有機シリコン化学における新しい合成経路の開発に不可欠です.
研究 の 目的:
- Si2Cl6におけるSi-Si結合のCl誘発の異解を調査する.
- 新しいポリシル化カルバニオンとその誘導体を合成する.
- 複雑なオルガノシリコン分子の構築におけるこれらの中間物質の合成的有用性を探求する.
主な方法:
- Si2Cl6は,CCl4またはCl2C=CCl2の存在下でクロライドイオンと反応する.
- 生成されたアニオンのプロトン化と酸化により,シライラートアルカンとアルケンが形成される.
- 構造の解明のために,光譜的特徴化 (NMR,EPR) とX線微分法.
主要な成果:
- モノカルバニオン [C(SiCl3) 3− ([A]−) と近隣ダイアニオン [(Cl3Si) 2C-C(SiCl3) 2− ([B] 2−) の高い収量を達成した.
- 主要な中間物からテトラシルエタン (H2B),テトラシルエタン (B),ディシルエチン (C),トリシルエタン (D) を合成する.
- アルキンCの成功した [4+2]-サイクル添加反応により,複合的ポリシル化芳香化合物 (E1,E2) が得られます.
結論:
- Si2Cl6のCl誘発の異解は,合成的に有用なポリシル化カルバニオンへの多用途な経路を提供します.
- 生成された中間物質は,代替エーテネ,エチネ,およびアロマティックを含むさまざまなオルガノシリコン化合物の前駆体として機能する.
- 実験データと計算データに基づいて,鍵となる変容に対する妥当な反応メカニズムが提案された.
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