ベータラクトンの合成:エポキシードカルボニレーションの高度に活性で選択的な触媒
Yutan D Y L Getzler1, Viswanath Mahadevan, Emil B Lobkovsky
1Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, USA.
Journal of the American Chemical Society
|February 14, 2002
まとめ
新しいアルミニウムコバルト触媒は,一酸化炭素とエポキシドからβ-ラクトンを効率的に合成します. この新しい触媒は,プロピレン酸化物カルボニル化などの反応において,高い生産性を提供し,ステレオ化学を保ちます.
科学分野:
- カタリシス カタリシス カタリシス
- オーガニック・シンセシス オーガニック・シンセシス
- 有機金属化学 有機金属化学
背景:
- ベータ・ラクトンは,価値ある合成中間物質である.
- エポキシドと一酸化炭素からベータラクトンを合成するための効率的な触媒方法が必要です.
研究 の 目的:
- ベータラクトン合成のための新しい高度に活性で選択的な触媒を報告する.
- 様々なエポキシドを用いて,触媒の活性と選択性を調査する.
主な方法:
- (硫黄) AlClとNaCo (CO) 4.から[硫黄) Al (THF) ]2[Co (CO) ]4触媒の合成
- エポキシド (プロピレン酸化物,1-ブーテン酸化物,エピクロロヒドリン,イソブチレン酸化物) を50°Cで880psiで一酸化炭素で触媒カルボニレーションする.
- (R) プロピレン酸化物カルボニル化による製品のステレオ化学分析.
主要な成果:
- 触媒[[サルフ]アル[THF]2][コ[CO]4]は簡単に作製できました.
- 様々なエポキシドから,β-ラクトンの高収量を得ました.
- ステレオ化学は, (R) - プロピレン酸化物を (R) - ベータ - ブチロラクトンにカーボニル化する過程で維持された.
結論:
- 新しいAl-Co触媒は,β-ラクトンへの効率的な経路を提供します.
- 触媒は高い活性,選択性,およびステレオ化学的制御を示しています.
- この方法は,機能化されたベータラクトンを合成するための貴重なツールを提供します.
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