シングル電子伝導:二次アルキルボロンクロスカップリングのための有効な技術
David N Primer1, Idris Karakaya, John C Tellis
1Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania , Philadelphia, Pennsylvania 19104-6323, United States.
Journal of the American Chemical Society
|February 5, 2015
まとめ
新しい単一電子伝送機構により,軽度のクロスカップリング反応が可能です. この方法は,イリジウムとニッケル触媒を用いて二次アルキル基をアリルハリドと効率的に結合します.
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:
- トランスメタレーションは,クロスカップリング反応において極めて重要です.
- 伝統的な方法は,しばしば厳しい条件や特定の基板を必要とします.
- より穏やかで,より一般的なクロスカップリングプロトコルの開発は,継続的な課題です.
研究 の 目的:
- 単一の電子媒介アルキル転送メカニズムを導入する.
- 二次アルキル基とアリルハリドのクロスカップリングに関する一般的条件を定める.
- この変換におけるフォトレドックスとニッケル触媒の有用性を実証する.
主な方法:
- イリジウムフォトレドックス触媒をニッケルクロスカップリング触媒と組み合わせて利用する.
- アルキル化剤として二次アルキルトリフローロボラートを使用する.
- 軽度な条件下で,様々な種類のアリルブロミドと反応する.
主要な成果:
- 二次性アルキルトリフッ素ボラートと様々なアリルブロミドの成功クロスカップリング.
- 伝送のための新しい単電子伝送経路の実証.
- 穏やかで広く適用可能な条件下でクロスカップリングを達成した.
結論:
- シングル電子媒介アルキル転送は,クロスカップリングの効率的な新しい経路を提供します.
- 開発された方法は,C ((sp3) -C ((sp2)) 結合形成に対する穏やかで一般的なアプローチを提供します.
- この研究は,触媒的クロスカップリング反応の範囲を拡大する.
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