フランのダイハプト調整レニウム複合体へのメタノール添加
1Department of Chemistry, University of Virginia, Charlottesville, VA 22901, USA.
Journal of the American Chemical Society
|September 13, 2001
まとめ
レーニウム-フラン複合体は,酸触媒メタノール添加を経て,メトキシ-二水素フラン複合体のステレオ選択的合成を生成する. メトキシ群の添加は,金属断片に対して一貫して反であり,製品の比率は,出発材料の比率から独立しています.
科学分野:
- 有機金属化学 有機金属化学
- 合成化学 合成化学とは
背景:
- フランリンガンドを含むレニウム複合体は知られている.
- これらの複合体のダイアステロエーマー混合物は合成されています.
研究 の 目的:
- [TpRe (((CO)) (((L)) ((4,5-エタ ((2) -フラン)) ]複合体への酸触媒メタノール添加を調査する.
- 結果として生じるダイハプト調整型2メトキシ-2,3-ジヒドロフーラン複合体とビニルエーテル製品について説明する.
主な方法:
- [TpRe ((CO)) ((L)) ((4,5-エタ ((2) -フラン)) ]複合体の反応は, -40°Cで酸性条件下でメタノールと反応する.
- ディアステロエーマー産物形成とステレオ選択性の分析.
主要な成果:
- L = (t) BuNC,PMe(3),ピリジン,および1-メチリミダゾールのための2メトキシ-2,3-ジヒドロフラン複合体の2つのダイステロエーマー合成.
- 金属断片に対するメトキシ群のステレオセレクティブ抗添加.
- furan リングの開口を通した (t) BuNC 複合体からビニルエーテル製品の形成.
結論:
- これらのレニウム-フラン複合体への酸触媒メタノール添加は,機能化されたダイヒドロフランへの経路を提供します.
- 立体化学的結果は,メトキシ群の反添加によって支配されます.
- 製品のダイアステロエーマー比は,出発材料比と相関しない.
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