核愛性フッ素素源によるエナチオ選択的,触媒性フッ素活性化反応
Eric M Woerly1, Steven M Banik1, Eric N Jacobsen1
1Department of Chemistry and Chemical Biology, Harvard University , Cambridge, Massachusetts 02138, United States.
Journal of the American Chemical Society
|October 7, 2016
まとめ
チラルアリルヨウ素触媒は,核愛性フルオロラクトニゼーションを用いて,4-フッ素イソクロマノンのエナンチオセレクティブ合成を可能にします. この方法は,高選択性を持つフッ素含有ステレオセンターを作り,既存のフッ素化技術に補完的な地域選択性を提供します.
科学分野:
- 有機化学
- アシンメトリック・シンセシス
- 化化学
背景:
- 酸ラクトンは,医薬品化学と材料科学における貴重な構成要素である.
- 循環構造にフッ素を導入するためのエナンチオセレクティブの方法の開発は,依然として重要な課題です.
- 既存の非対称的な化プロトコルは,しばしば異なる地域選択性パターンを表している.
研究 の 目的:
- 4-フッ素化クロマノンの新合成を報告する.
- フロロラクトニゼーション反応におけるキラルアリルヨウ素触媒の有用性を調査する.
- 既存のプロトコルに補完的な地域選択性を備えた方法を確立する.
主な方法:
- チラルアリルヨウ素触媒によるフローララクトニゼーション
- 核愛性フッ素源としてHFピリジンを利用する.
- ステキオキサンダーとしてペラシドを使用する.
主要な成果:
- 4-フッ素化クロマノンの 選択合成が成功しました
- フッ素を含むステレオセンターの形成で達成された高いエナンチオとダイアステレオ選択性.
- 観測された地域選択性は,確立された非対称的な電極性化方法のものを補完します.
結論:
- 開発されたキラルアリルヨウ素触媒によるフッ素アクトニゼーションは,エナティオメリックに濃縮された4-フッ素イソクロマノンの取得に有効な方法である.
- この方法論は,制御された立体化学でフッ素をラクトン構造に導入するための貴重な代替手段を提供します.
- 補完的な地域選択性は,フッ素化された有機分子のための合成ツールボックスを拡張します.
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