N-メトキシベンザミドのアルレンと高度に選択的な軽度の段階的なアリレーション
Rong Zeng1, Chunling Fu, Shengming Ma
1Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, P.R. China.
Journal of the American Chemical Society
|May 30, 2012
まとめ
研究者らは,アレンを用いたN-メトキシベンザミドのオルトアリレーションのための新しいRh(III) 触媒反応を開発した. この効率的なC-H機能化は,穏やかな条件下で動作し,光学的に活性なラクトンを生成するために軸性キラリティを転送します.
科学分野:
- 有機化学 オーガニック・ケミストリー
- カタリシス カタリシス カタリシス
- 合成方法論 合成方法論
背景:
- アミドのオーソ機能化は,複雑な有機分子を合成するために不可欠です.
- 効率的で軽度のC-H機能化の方法を開発することは,有機合成における重要な課題です.
研究 の 目的:
- ポリ置換アレンを用いたN-メトキシベンザミドの効率的なRh(III) 触媒化された段階的なオルトアリレーションを報告する.
- この新しい合成方法論の範囲と限界を探求する.
- この反応における軸性キラリティ移転の可能性を調査する.
主な方法:
- ロージウム ((III) -触媒化されたC-H機能化.
- N-メトキシベンザミドとポリ置換アレンを用いた段階的なオーソアリレーション.
- 穏やかな条件下での反応最適化 (例えば,室温から-20°C).
- 空気と水分との反応互換性の分析.
主要な成果:
- N-メトキシベンザミドのRh(III) 触媒による効率的なオートアリレーションを,様々なアレンで達成した.
- 異なる機能群を持つ末端および内部アレンに対する反応の耐性を示した.
- 非常に効率的な軸性キラリティの移転が観察され,光学的に活性なラクトンにつながった.
- 周囲の空気と湿度,および軽度の反応条件との互換性が確認されています.
結論:
- 開発されたRh (III) -触媒化された方法は,オルトアリレーションのための新しい効率的な経路を提供します.
- 反応の温和な条件と広範囲の基板の範囲は,有機合成のための貴重なツールになります.
- 軸性キラリティの成功移転は,エナチオメリックに濃縮されたラクトンを合成するための道を開く.
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