Lutidine/B(C6F5)3: クラシックと挫折したルイス対の反応性の境界にある

Stephen J Geier¹, Douglas W Stephan

¹Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada, M5S 3H6.

Journal of the American Chemical Society

|February 27, 2009

まとめ

以前は反応性がないと考えられていた古典的なルイス酸塩添加物は,現在,挫折したルイスペア化学のために利用できます. この研究は,水素を活性化させ,THFのリングを開く能力を示しています.

科学分野:

* 無機化学無機化学
* 有機金属化学について

背景:

*古典的なルイス酸塩添加物は,通常,安定した,反応しない種とみなされます.
* フレストラテッド・ルイス・ペア (FLP) は,アダクト形成を防止するステリック・ハードレアにより,ユニークな反応性を示す.

研究の目的:

* 古典的なルイス酸塩添加物の反応性を調査する.
* これらのアダクトが,挫折したルイスペアのユニークな反応性特性にアクセスできることを示すために.

主な方法:

* 2,6-ルチジン (ルイス塩基) とB ((C6F5) 3) (ルイス酸) の間の添加物の形成.
* アドクト形成の特徴を示すためのバランス研究.
* H2とテトラヒドロフラン (THF) を含む反応性研究.

主要な成果:

* 2,6-ルチジン/B(C6F5) 3アダクトと自由成分の間に均衡が確立されました.
* アドクトは分子水素 (H2) の異解活性化を示した.
* 補足は,THFのリング開封を成功裏に誘導した.

結論:

* 古典的なルイス酸塩添加物は必ずしも無反応ではない.
* これらのアダクトは,挫折したルイス対のような反応性の前駆者として機能する.
* この発見は,ルイス酸塩化学とFLPの応用範囲を拡大する.

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