結合された (Z) -エニネンのエナチオ選択的ブロモラクトニゼーション
Wei Zhang1, Suqing Zheng, Na Liu
1School of Pharmacy, University of Wisconsin, Madison, Wisconsin 53705, USA.
Journal of the American Chemical Society
|March 3, 2010
まとめ
この研究は,エニンのエナチオセレクティブブロモラクトニゼーションのための新しい触媒的方法を導入しています. このプロセスは,高ステレオ選択性を持つキラルブロモアレンとラクトンを効率的に生成します.
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
- 合成方法論 合成方法論
背景:
- エナチオセレクティブ合成は,医薬品にとって極めて重要です.
- 複雑な分子合成のための新しい触媒方法の開発が進行中です.
- ブロモラクトニゼーションは,機能化されたヘテロサイクルの経路を提供します.
研究 の 目的:
- 結合された (Z) -エニンゼンの触媒的エナチオセレクティブシン-1,4-ブロモラクトニゼーションを開発する.
- 二,三,四置換ブロモアレンとラクトンヘテロサイクルを効率的に合成する.
- キラル触媒のメカニズムを調査するために.
主な方法:
- 触媒エナチオセレクティブシン-1,4-ブロモラクトニゼーション反応.
- 結合 (Z) -エニンを基質として使用する.
- キラル触媒とN-ブロモスクシニミド (NBS) を使った.
主要な成果:
- 高いダイアステロエーマー比率 (>20:1) を達成しました.
- 最大99%のエナティオメア過剰が得られる.
- 代替ブロモアレンとラクトンの効率的かつステレオ選択的合成.
結論:
- (Z) -エニンの新しい触媒的エナチオセレクティブブロモラクトニゼーションが確立されました.
- この方法は,貴重なキラルブロモアレンとラクトンへのアクセスを提供します.
- キラル触媒は,おそらく二機能反応剤として作用する.
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