アリル源としてボロン酸をアルデヒドに用いたアリル転移反応を触媒化した非対称性
1Institut für Organische Chemie der RWTH-Aachen, Professor-Pirlet Strasse 1, 52074 Aachen, Germany. carsten.bolm@oc.rwth-aachen.de
Journal of the American Chemical Society
|December 12, 2002
まとめ
生物活性化合物の重要な中間物質であるキラルダイアリルメタノールを,柔軟な触媒非対称法を使用して合成する. 単一の平面-キラルフェロセーヌ触媒は,両方の製品エナティオメールへのアクセスを提供し,選択性が高くなります.
科学分野:
- 有機化学 オーガニック・ケミストリー
- アシンメトリック・シンセシス
- カタリシス カタリシス カタリシス
背景:
- チラルダイアリルメタノールは,生物学的活性分子を合成するための重要な構成要素です.
- それらの非対称的な合成のための効率的で柔軟な方法の開発は,重要な関心があります.
研究 の 目的:
- キラルダイアリルメタノールの合成のための汎用的な触媒的非対称的方法を提示する.
- 単一の触媒システムを使用して,両方の製品エナンチオメアのアクセシビリティを証明する.
主な方法:
- 非対称な合成のために平面-キラルフェロセンの触媒を使用した.
- 入手可能なアリルボロン酸とアルデヒドを原料として使用した.
- アリルドナーと受容体の組み合わせを変化させ,エナチオ選択性を制御した.
主要な成果:
- キラルダイアリルメタノールの柔軟かつ簡単に合成が可能になりました.
- 単一の触媒で製品の両方のエナンチオマーにアクセスする能力を実証しました.
- 優れたエナチオセレクティビティ (98%EE) を有する幅広い製品が得られました.
結論:
- 開発された方法は,キラルダイアリルメタノールへの非常に効率的な経路を提供します.
- 触媒が両方のエナチオメールを供給する能力は,合成戦略を簡素化します.
- このアプローチは,薬物の発見のためのエナティオメリックに純粋な中間物質の準備に価値があります.
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