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A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
Published on: December 25, 2015
エニンのプラチナ触媒によるサイクロアイソメリゼーション反応によるサイクロブテン
Alois Fürstner1, Paul W Davies, Tobias Gress
1Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim/Ruhr, Germany. fuerstner@mpi-muelheim.mpg.de
Journal of the American Chemical Society
|June 9, 2005
まとめ
プラチナ (((II) クロライドは,1,6-エニンのサイクルブテン誘導体への再配置を触媒化する. 一酸化炭素は,このプラチナ触媒によるサイクロアイソメリゼーションを加速し,緊張した三循環骨格を形成します.
科学分野:
- 有機金属化学 有機金属化学
- 合成有機化学 合成有機化学について
- カタリシス カタリシス カタリシス
背景:
- 1,6-エニネは,有機合成における多用途の基質である.
- プラチナ触媒によるサイクロアイソメリゼーション反応は,複雑な分子構造の構築に不可欠です.
- 反応メカニズム,特に有機金属中介物質を含む反応メカニズムを理解することは,新しい合成方法論の開発の鍵です.
研究 の 目的:
- 1,6-エニネンのプラチナ (((II) クロライド触媒による再構成を調査する.
- 反応速度とメカニズムに対する一酸化炭素の影響を調査する.
- ストレインされたサイクロブテン誘導体とトリサイクリック骨格の形成を実証する.
主な方法:
- トゥルーエンの1,6-エニンの反応は,電子が豊富なアリル置換物と,トゥルーエンのプラチナ (II) クロライドの触媒量との反応である.
- 反応を炭素一酸化物 (1 atm) の大気下で行う.
- その結果生じるサイクロブテン誘導体および三循環性製品の特性.
主要な成果:
- 1,6-エニネスを含むアリル置換剤は,PtCl2.2によって触媒化されたサイクロブテン誘導体へと再配置する.
- 反応速度は,一酸化炭素の存在によって著しく増加します.
- 緊張したトリサイクル骨格 (例えば,化合物7と9) の形成が観察されました.
結論:
- PtCl2は,置換された1,6-エニネンのサイクロイソメリゼーションの効果的な触媒である.
- 一酸化炭素は反応加速剤として作用し,プラチナ中心の電友性を増加させる可能性が高い.
- 観察された産物は,プラチナ触媒によるサイクロアイソメリゼーションのメカニズム的な洞察を提供し,非古典的なカルボカチオンに似たオーガノプラチナ中間物質を含む経路をサポートします.
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