ステレオ選択的アンポリングは,フェノールにヘテロ原子のタンデム添加である
Michael A Todd1, Michal Sabat, William H Myers
1Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA.
Journal of the American Chemical Society
|May 14, 2008
まとめ
フェノールは,金属複合体への調整時にサイクロヘキサディエノンに変容します. これにより,電ophilesとnucleophilesの制御された添加が可能になり,金属から放出できる代用サイクロヘクセンオンを生成します.
科学分野:
- 有機金属化学 有機金属化学
- オーガニック・シンセシス オーガニック・シンセシス
- カタリシス カタリシス カタリシス
背景:
- フェノールは通常,その芳香的形態で存在します.
- 移行金属への調整は,有機リガンドの反応性を変化させることができます.
- 有機反応におけるステレオ化学とレジオ化学の制御は,大きな課題です.
研究 の 目的:
- {TpW ((PMe3) ((NO)) }複合体への調整時にフェノルのタウトメリゼーションを調査する.
- 非芳香性リガンドの段階的な機能化の可能性を調査する.
- 代用サイクロヘクセノンの合成において,高いステレオおよび地域制御を達成するために.
主な方法:
- フェノールから{TpW{PMe3}{NO}}複合体への調整.
- 調整されたリガンドに電子性および核性粒子を段階的に加える.
- 酸化分解により,代用されたサイクロヘクセノン製品が放出されます.
主要な成果:
- フェノールは,調整時に2Hフェノールにタウトメリゼスします.
- 協調されていない二重結合は,制御された加算反応を経験します.
- 高ステレオおよび地域制御を有する4,5-非置換サイクロヘクセノン複合体の形成.
- 代用されたサイクロヘクセノンが,酸化分解による解離に成功した.
結論:
- 金属の協調は,フェノルを活性化し機能させる強力な戦略を提供します.
- {TpW ((PMe3) ((NO)) }複合体はテンプレートとして作用し,ステレオ選択的および地域選択的合成を指揮する.
- この方法は,合成的に有用な代用サイクロヘクセノンの新しい経路を提供します.
関連する概念動画
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