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トリウムメタラサイクル 触媒アルキン水リン酸化を促進する
Mary E Garner1, Bernard F Parker1, Stephan Hohloch1
1Department of Chemistry, University of California, Berkeley , Berkeley, California 94720, United States.
Journal of the American Chemical Society
|September 12, 2017
まとめ
新しいトリウム複合体は,可逆性C−H結合活性化によって内部アルキンの触媒性水リン酸化を促進する. この発見は有機金属化学と触媒研究に 新たな道を開きます
科学分野:
- 有機金属化学
- カタリシス
- トリウム化学
背景:
- トリウム複合体は,触媒的な用途のためにますます探索されています.
- C-H結合の活性化は,合成化学における重要な変換である.
- アルキンの水酸化は合成的に価値がありますが,活性化されていない基板には困難です.
研究 の 目的:
- トリウム・ビス・メシチル・フォスフィド複合体の触媒的可能性を調査する.
- このシステムにおけるC−H結合の活性化とヒドロフォスフィネーションのメカニズムを探求する.
- 活性化されていない内部アルキンの触媒性水酸化を可能にします.
主な方法:
- トリウム・ビス・メシチル・フォスフィド複合体の合成
- 活性化されていない内部アルキンによる触媒性水素酸化反応.
- ステキオメトリック実験と中間物の特徴づけを用いたメカニズム研究.
主要な成果:
- トリウム複合体 (1) は,分子内C−H結合の可逆活性化を示した.
- この活性化は,活性化されていない内部アルキンの触媒性水リン酸化を可能にしました.
- 反応性Th-NHC金属サイクル中間物質 (Int and 2) が触媒サイクルに関与していることを示唆している.
結論:
- ビス (NHC) ボラートによるトリウム複合体は,水素酸化のための効果的な触媒である.
- このメカニズムはC-H活性化によって進行し,金属循環中介物質を含む.
- この研究は,トリウム複合体の触媒の有用性を拡大する.
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