チラルテトラアミノフォスフォニウムカルボキシラートで触媒化された直接マニッヒ型反応
Daisuke Uraguchi1, Yusuke Ueki, Takashi Ooi
1Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan.
Journal of the American Chemical Society
|October 7, 2008
まとめ
クイラル型テトラアミノフォスフォニウムカルボキシラート触媒は,高度にエナチオセレクティブなマニッヒ型反応を可能にします. オーガニックアニオンの構造的変化により,キラル四次元のオニウム塩の触媒能力が向上する.
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:
- チラルの四分性オニウム塩は,効果的な触媒である.
- 非対称合成のための新しい触媒システムの開発は極めて重要です.
研究 の 目的:
- キラルテトラアミノフォスフォニウムカルボキシレート (P,S) -1.OCOR.を使用した協力的な非対称な触媒を確立する.
- エナチオセレクティブ反応におけるこの触媒の合成的有用性を実証する.
- アニオン改変によるキラル四分位オニウム塩触媒の可能性を調査する.
主な方法:
- (P,S) -1.OCOR.を使用した協同非対称触媒.
- アズラクトンとN-スルフォニルイミンとの直接的なマンニッヒ型反応への応用.
主要な成果:
- (P,S) -1.OCOR.との協力的な非対称な触媒を成功裏に確立しました.
- 高度にエナチオセレクティブの直接マニッヒ型反応を達成した.
- 触媒の合成的有用性を実証しました.
結論:
- チラルテトラアミノフォスフォニウムカルボキシレート (P,S) -1.OCORは,非対称なマニッヒ型反応の効果的な触媒である.
- オーガニックアニオンの構造的変更により,キラル四分位オニウム塩の触媒をさらに強化することができます.
- この研究は,洋塩を用いた非対称な触媒の範囲を拡大する.
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