アニリドとオレフィンの選択的Pd触媒による酸化結合は,室温でC-H結合の活性化により発生する
Maarten D K Boele1, Gino P F van Strijdonck, André H M de Vries
1Institute of Molecular Chemistry, Faculty of Science, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands.
Journal of the American Chemical Society
|February 21, 2002
まとめ
研究者らは,アニリドとアクリラートを結合するための,パラジウム触媒による新しいC-H活性化方法を開発した. この効率的な室温反応は,低コストの酸化物質を使用し,高収量を達成します.
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:
- パラジウムによって触媒化されたC-H活性化は,C-C結合形成のための強力なツールです.
- アニリデスの整形機能化のための穏やかで効率的な方法の開発は,依然として課題です.
研究 の 目的:
- アニリド誘導体とアクリラートとの間で,パラジアム触媒による新しい酸化結合反応を開発する.
- 軽度な条件下でオルソC-H結合の活性化を達成するために.
主な方法:
- 反応条件をスクリーニングするために,高通量実験が採用されました.
- この反応には,パラジウム触媒,酸性環境,および酸化剤としてのベンゾキノンが含まれていました.
- 運動学的研究と電子的依存性を分析した.
主要な成果:
- 選択的で軽度のパラジウム触媒による酸化結合反応が発見された.
- この反応は,アクリラートによるアニリド誘導体のオーソC-H結合活性化によって進行する.
- ベンゾキノンを費用対効果の高い酸化剤として使用して,室温で高収量 (最大91%) を達成しました.
結論:
- 開発された方法は,機能化されたアニライドを合成するための効率的な経路を提供します.
- 反応のメカニズムは,おそらく[PdOAc]+複合体による電友的な攻撃を含む.
- ベンゾキノンはリガンドとして作用し,パラジウム触媒を安定させる可能性があります.
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