単純なオレフィンによるエナチオセレクティブの分子内アルデヒドα-アルキレーション:ホモエネ製品への直接アクセス
Robert J Comito1, Fernanda G Finelli, David W C MacMillan
1Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States.
Journal of the American Chemical Society
|June 11, 2013
まとめ
新しいエナチオセレクティブSOMO触媒法では,単純な前体から複雑なカーボサイクルとヘテロサイクルを合成します. このアプローチは,アルケンの転置によるホルミール置換リングを生成し,貴重な化学構造への新しい経路を提供します.
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:
- 複雑なカーボサイクルやヘテロサイクルを合成するには,多くの場合,多段階のプロセスが必要です.
- キラル分子を作るための選択的かつ効率的な方法の開発は,有機化学の重要な課題です.
研究 の 目的:
- 非対称的に置換されたカルボサイクルとヘテロサイクルを合成するための高度に選択的な方法を開発する.
- 容易に入手可能な前駆物質を使用して,ホルミール置換リングの生産のための一般的な非対称的な戦略を確立する.
主な方法:
- エナチオセレクティブのSOMO触媒 (単一軌道最大触媒) を採用しています.
- 活性化されていないアルデヒド-オレフィン前駆者を利用する.
- エナミン・ラジカル・カチオン・インターミディエートを生成する.
主要な成果:
- 非対称的に置換されたカルボサイクルとヘテロサイクルを高度に選択的に合成した.
- ペンデントオレフィンにエナミンラジカルカチオンを加えることで,一般的な非対称な戦略を示した.
- アルケンの転置による多種多様なホルミール置換リングの生産に成功しました.
結論:
- 開発されたSOMO触媒は,複雑なキラル分子への新しい効率的な経路を提供します.
- この方法は",ホモエネ"タイプの製品への直接アクセスを可能にし,合成の可能性を拡大します.
- この戦略は,アルデヒド-オレフィン前駆物質の幅広い範囲に適用できます.
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