アルケニルボロン酸を核愛体として,移行金属のないステレオ特異的クロスカップリング
Chengxi Li1, Yuanyuan Zhang1, Qi Sun1
1State Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences , 345 Ling Ling Road, Shanghai 200032, China.
Journal of the American Chemical Society
|August 13, 2016
まとめ
この研究は,複雑な分子を作るための新しい移行金属フリークロスカップリング方法を導入しています. この新しいアプローチは,価値あるキラルおよび非キラル有機化合物を合成するためのステレオ特異的な経路を提供します.
科学分野:
- 有機化学
- 合成方法論
- カタリシス
背景:
- C−C結合形成には,過渡金属触媒によるクロスカップリング反応が不可欠である.
- 既存の方法には高価で有毒な移行金属が必要です
- C ((sp2) - C ((sp3)) 結合のステレオ特異的合成は依然として大きな課題である.
研究 の 目的:
- 移行金属のないクロスカップリング反応を開発する.
- 非キラルおよびキラルアルキル-アリル/アルケニル化合物の合成を可能にします.
- アルケニルボロン酸を使って ステレオスペシフィックカップリングを実現する.
主な方法:
- 二次アルキルハリド/メシラートとアリル/アルケニルボロン酸のクロスカップリング反応
- トランジションメタルフリー反応システムを使用した.
- アルケニルボロン酸によるSN2型ステレオスペシフィックカップリングメカニズムを調査した.
主要な成果:
- 移行金属のないクロスカップリングが成功しました.
- 中等から良好な収穫量で非キラルとキラル結合製品を合成した.
- アルケニルボロン酸を核愛体として初めてステレオスペシフィックなSN2型結合を示した.
結論:
- 新しい効率的な移行金属のないクロスカップリングの方法が確立されています.
- この方法は,C ((sp2) -C ((sp3) 結合形成のための移行金属触媒反応に価値のある代替手段を提供します.
- 開発されたステレオスペシフィックカップリングは,キラル分子を合成するための新しい経路を提供します.
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