アリル移行による二酸化窒素と炭化水素の結合

Sean F McWilliams¹, Daniël L J Broere^1,2, Connor J V Halliday³

¹Department of Chemistry, Yale University, New Haven, CT, USA.

Nature

|August 14, 2020

まとめ

研究者は,豊富な炭化水素と大気中の窒素 (N₂) を活性化してアニリン誘導体を生成する鉄触媒システムを開発した. この突破により,N₂を炭化水素と直接結合させ,新しい触媒方法の開拓が可能になった.

科学分野:

* 無機化学
* 触媒
* 有機金属化学

背景:

炭化水素や大気中の窒素 (N₂) のような惰性分子を活性化することは,化学における重要な課題です.
N₂から炭素-窒素結合を形成する伝統的な方法は,N₂活性化に必要な還元条件と相容れない反応性有機前駆物質を必要とし,触媒的応用を妨げます.

研究の目的:

ベンゼンとN₂を連続的に活性化できる新しいディケチミナート製鉄システムを報告する.
N₂を窒素源として使用して,石油由来アレンをシリ化アニリン誘導体に単発変換することを実証する.

主な方法:

* ディケチミナートによる鉄ブロミド複合体を使用した.
* ナトリウム粉,クラウンエーテル,トリメチルシリルブロミド,N₂を含む反応混合物を使用した.
* 反応経路に沿って分離され,特徴づけられた中間化合物.

主要な成果:

ベンゼンとN₂を順次活性化メカニズムで結合してアニリン誘導体を形成する.
* 複数のアレンをシライル化アニリンに単発変換した.
* 提案された反応機構を支える主要な中間物質を特定し,特徴づけました.

結論:

* 開発された鉄系は,大気中の窒素と豊富な炭化水素の直接結合を可能にします.
この戦略は,アニリン誘導体を合成するための新しい経路を提供し,N₂機能化のための触媒システムの開発を進めています.

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