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フォト誘発型トランジション・メタルフリー・チャン・エヴァンス・ラム型コップリング:ハライドアニオン効果による二重フォト刺激モード
Zijun Zhou1,2, Jeonguk Kweon1,2, Hoimin Jung1,2
1Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea.
Journal of the American Chemical Society
|May 13, 2022
まとめ
この研究は,光を用いたN-アリラミドを作るための新しい,金属のない方法を紹介しています. このプロセスは,穏やかな条件下で塩化アニオンによって促進されたアリル源とダイオクサゾロンを効率的に結合します.
科学分野:
- 有機化学
- 写真化学
- 合成方法論
背景:
- 移行金属で触媒化されたクロスカップリング反応は有機合成において不可欠である.
- 金属のない代替品の開発はコスト,毒性,浄化に優位性があります.
- アミドを合成するには,C (アリル) -N結合形成の効率的な方法が不可欠である.
研究 の 目的:
- C (アリル) -N結合形成のための新しい光誘導型,移行金属フリーメソッドを開発する.
- アリルボロン酸またはトライアリルボロキシンと1,4,2-ディオクサゾール-5-オンを結合パートナーとして使用する.
- N-アリラミドへの多用途で軽い合成経路を確立する.
主な方法:
- アリルボロン酸/トライアリルボロキシンと1,4,2-ディオクサゾール-5-オンを使用した光誘発反応.
- クロライドアニオン (現地生成または添加) を重要な協力成分として含有する.
- 光刺激と単一の電子移転 (SET) を含む機械的調査.
主要な成果:
- 軽度の光学条件下での幅広いN-アリラミドの合成に成功した.
- 大規模な反応と15Nラベル付きアリラミドの合成を通じて,この方法の有用性を実証する.
- ディオクサゾロンの活性化とアリル移動を促進する2つの異なる光刺激の特定.
結論:
- 新しく,効率的で,移行金属のない光誘導C ((アリル) -N結合形成戦略が開発されました.
- この方法は,合成的に多用途なN-アリラミドに便利なアクセスを提供します.
- この研究では,塩化アニオンの協力的な役割が強調され,SETとアリル移動を含むメカニズム的経路が提案されています.
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