ベンチ安定のマンガネス (III) クロリド化合物の合成:協調化学とアルケンの二塩化
Ananya Saju, Justin R Griffiths, Samantha N MacMillan1
1Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States.
Journal of the American Chemical Society
|September 6, 2022
まとめ
新しいマンガン塩化物複合体[MnCl3 ((OPPh3) ] (1) は,マンガン三塩化物 (MnCl3) の安定したアクセス可能な源を提供します. この複合体は,アルケンの二塩化と協調反応を含む様々な合成アプリケーションを,根幹のメカニズムを通じて容易にします.
科学分野:
- 無機化学
- 有機金属化学
- 合成化学
背景:
- マンガンの三塩化物 (MnCl3) は反応性があり,しばしば扱いにくい.
- MnCl3溶液を必要とする既存の合成方法は,しばしば面倒くさいし,限られている.
- 安定した,容易に利用可能なMnCl3源は,多様な化学的変換のために必要である.
研究 の 目的:
- 便利なMnCl3源として,安定したマンガン塩化物複合体[MnCl3 ((OPPh3) 2) ] (1) を合成し,特徴づけます.
- 協調化学と合成方法論における複合体1の有用性を実証する.
- 特にアルケンの二塩化反応における反応機構を明らかにする.
主な方法:
- トリフェニルフォスフィン酸化物 (Ph3PO) とアセトニトリル溶解されたMnCl3 (2) を反応させ, [MnCl3 ((OPPh3) 2) ] (1) を合成する.
- {Tpm*}MnCl3 (3) の合成によって示される,協調反応のための複合体 1 を利用する.
- 様々な溶媒で複合体1を用いたアルケーン二塩化反応をエアロビック条件下で実行する.
- 光加速ハロゲン化と放射線敏感性実験を用いて反応機構を調査する.
主要な成果:
- コンプレックス1はベンチ安定の青い沈殿物として成功しました.
- 複合体1はMnCl3 (3) を合成する前駆体として有効に働いた.
- アルケンの二塩化は,様々な溶媒で,空気に開放された複合体1を用いて,良好な基板範囲で達成された.
- 塩素原子を複合体1から段階的に移すという 根本的なメカニズムを示唆している.
結論:
- コンプレックス [MnCl3 ((OPPh3) 2) ] (1) は,伝統的なMnCl3溶液に安定し,操作が容易な代替剤です.
- 複合体1は,MnCl3を含む合成アプリケーションの範囲を拡大し,アルケンの効率的な二塩素化および調整化学を容易にする.
- 観察された反応性は,コンプレックス1によって媒介される変異のための根本的な経路をサポートし,マンガンの化学におけるメカニズム的理解を進める.
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