キネティック・コントロール下でのコバルト触媒によるRegioselective Olefin アイソメリゼーション
Xufang Liu1, Wei Zhang1, Yujie Wang1
1Center of Basic Molecular Science (CBMS), Department of Chemistry , Tsinghua University , Beijing 100084 , China.
Journal of the American Chemical Society
|May 22, 2018
まとめ
この研究は,地域選択性オレフィン異体化のための新しいコバルト触媒を導入し,挑戦的な変換のための運動制御を達成します. NNP-ピンサーリガンドシステムは,高選択性で機能化されたオレフィンの効率的な異体化を可能にします.
科学分野:
- 有機化学
- カタリシス
- 合成方法論
背景:
- オレフィンイソメリゼーションは,内部オレフィン合成とリモート機能化を可能にするために不可欠です.
- 通常は熱力学的に制御されるオレフィンイソメリゼーションにおける運動制御を達成することは,依然として重要な課題である.
- 有機合成を進めるには,選択的触媒システムの開発が不可欠です.
研究 の 目的:
- 新しいコバルト触媒による地域選択性オレフィン異体化反応を報告する.
- 調節可能なNNP-pincerリガンドを使用して,地域選択性に対する運動制御を実証する.
- 機能化されたオレフィンを同化するための温和で効率的な方法を確立する.
主な方法:
- NNP-pincerリガンドを備えたコバルトベースの触媒システムの開発.
- 様々な1,1-非置換オレフィンのイソメリゼーションに触媒を適用する.
- 1アルケンの2アルケンへの選択的単同化のための新しい戦略の調査.
- 局所生成の Co-H 種を含むメカニズム研究
主要な成果:
- オレフィンイソメリゼーションにおける地域選択性の高い運動制御を達成した.
- 機能化されたオレフィンの一連の優れた生産性と地域選択性を実証した.
- ミンフィエンシン全合成のための重要な中間物質を合成する方法を成功裏に適用しました.
- 1アルケンの2アルケンへの選択的単同化のための戦略を開発した.
結論:
- 新しいコバルト-NNP-ピンサーシステムは,運動制御下での地域選択性オレフィンイソメリゼーションのための強力なツールを提供します.
- 触媒システムは温和で効率的で,多用途で,様々な機能化されたオレフィンに適用できます.
- ベータ-H除去ステップに対するリガンド制御は選択性を決定し,より少ない阻害された製品を好む.
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