三次アリルおよびホモアリルアルコールの触媒エナチオセレクティブエポキシデーション
José Luis Olivares-Romero1, Zhi Li, Hisashi Yamamoto
1Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States.
Journal of the American Chemical Society
|February 15, 2013
まとめ
新しいHf(IV) -ビシヒドロキサミ酸 (BHA) 触媒は,アリルおよびホモアリルアルコールの高度にエナチオセレクティブなエポキシデーションを可能にします. この多用途な方法は,非対称なエポキシデーション,運動解像度,非対称化のために最大99%のエナチオセレクティビティを達成します.
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
- アシンメトリック・シンセシス
背景:
- エナチオセレクティブエポキシデーションは,キラル分子の合成に不可欠です.
- さまざまなアルコール基板のための多用途な触媒の開発は,依然として課題です.
研究 の 目的:
- 三次アリルおよびホモアリルアルコールのエナチオセレクティブエポキシデーションのための効率的で汎用的な触媒システムを開発する.
- 様々な非対称変換におけるHf (IV) -ビシヒドロキサミ酸 (BHA) システムの適用性を実証する.
主な方法:
- 触媒としてHf(IV) -ビシヒドロキサム酸 (BHA) 複合体を利用した.
- 触媒システムを非対称なエポキシデーション,運動解像度,非対称化反応に適用した.
- キラルクロマトグラフィを用いて基板の範囲とエナチオ選択性を分析した.
主要な成果:
- 三次アリルアルコールとホモアリルアルコールの高度なエナンチオセレクティブエポキシデーションを達成しました.
- 非対称なエポキシデーション,運動解像度,非対称化によってシステムの汎用性を実証した.
- 得られた製品は,99%までのエナチオ選択性を持ち,これらの基板では初めてです.
結論:
- Hf (IV) -BHAシステムは,エナチオセレクティブエポキシデーションのための効率的で汎用的な方法を提供します.
- この触媒的アプローチは,価値あるキラルアルコール誘導体の範囲に高いエナチオセレクティブ性を提供します.
- 複雑な分子合成のための非対称な触媒の重要な進歩を表しています.
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