ルテニウム転送水素化触媒による電気触媒アルコールの酸化
Kate M Waldie1, Kristen R Flajslik1, Elizabeth McLoughlin1
1Department of Chemistry, Stanford University , Stanford, California 94305, United States.
Journal of the American Chemical Society
|December 21, 2016
まとめ
ルテニウム複合体は,ケトン転送水素化とイソプロパノール電酸化を効率的に触媒化する. これらの触媒は,環境条件下では高回転周波数を示し,高ファラダイク効率のアセトンを生成します.
科学分野:
- 有機金属化学
- カタリシス
- 電気化学
背景:
- ルテニウム複合体は有機合成における多用途の触媒である.
- トランスファー水素化と電酸化は化学合成における重要な変換である.
研究 の 目的:
- 転移水素化と電酸化のための新しい八面体ルテニウム複合体の触媒的活性を調べる.
- これらの複合体の電気化学的性質と反応機構を探求する.
主な方法:
- ルテニウム複合体の合成と特徴付け [RuX ((CNN)) ((dppb)) ]
- イソプロパノールを水素源として使ってケトンのトランスファー水素化.
- サイクルボルトメトリーと制御された潜在電解を含む電気化学の研究.
主要な成果:
- 複合体1と2は,ケトンのトランスファー水素化において高い活性を示している (0. 88 - 0. 89s−1).
- コンプレックス1とコンプレックス2によるイソプロパノールの電気化学的酸化は,高速な回転周波数 (3.2-4.8s−1) を示している.
- イソプロパノールの電酸化により,94 ± 5%のファラダイク効率を持つアセトンが得られる.
結論:
- 八面体ルテニウム複合体は,転送水素化と電酸化反応の両方に非常に効果的な触媒である.
- ル・ヒドリド種の電気化学的行動は,触媒的活動に極めて重要です.
- これらの複合体は,ケトン還元とアルコール酸化のための持続可能な経路を提供します.
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