ロジウム ((III) 触媒によるアレンのN-ニトロゾ誘導C-Hオレフィネーション. 温和な条件下でも高収量で多用途なカップリングです
Baoqing Liu1, Yang Fan, Yang Gao
1Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China.
Journal of the American Chemical Society
|December 13, 2012
まとめ
研究者らは,N-ニトロゾ化合物を用いてアレンをオルトオレフィネーションするための新しいRh(III) 触媒化された方法を開発した. この汎用性の高いN-ニトロゾ誘導戦略は,温和な条件,高い収穫量,および有機合成のための幅広い基板範囲を提供します.
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:
- N-ニトロゾ化合物は,実証された反応性を持つ多用途の有機構造です.
- 効率的な合成方法論の開発は,多様な化学アーキテクチャにアクセスするために不可欠です.
研究 の 目的:
- アレンのオルトオレフィネーションのためのRh(III) 触媒化されたN-ニトロゾ誘導的方法論を開発する.
- この新しい変容の合成的有用性とメカニズム的基盤を探求する.
主な方法:
- N-ニトロゾ誘導によるオルトオレフィネーションのためのRh (III) 触媒を用いた.
- デウテリウム交換,運動同位体効果,運動プロファイリングを含む包括的なメカニズム研究を実施しました.
- 様々なRh (III) コンプレックスと反応条件を研究した.
主要な成果:
- アレンのオルトオレフィネーションのために,軽度の反応条件と高収量を達成しました.
- 1-オクテネなどの非活性化オレフィンを含む,挑戦的な基板との合成互換性が実証されています.
- 触媒の静止状態を[RhCp*](2+),電離性C-H活性化をターンオーバーを制限するステップとして,および5つ構成のロダサイクルの中間物質として確立しました.
結論:
- N-ニトロゾ群は,軽度のRh(III) 触媒条件下でオルトオレフィネーションを誘導する.
- この方法論は,広範囲の基板範囲を持つ貴重な有機アーキテクチャへのアクセスを提供します.
- N-ニトロゾ分子は,さらにアミン機能に変換され,合成の多用途性を強調することができます.
関連する概念動画
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