アリルハリドとチオールのパラジウム触媒結合のための一般的で長寿命の触媒です
Manuel A Fernández-Rodríguez1, Qilong Shen, John F Hartwig
1Department of Chemistry, Yale University, PO Box 208107 New Haven, CT 06520-8107, USA.
Journal of the American Chemical Society
|February 16, 2006
まとめ
CyPF-t-Buリガンドを使用した新しい触媒システムは,アリルハリドおよび硫酸塩をチオールと効率的に結合することを可能にします. この方法は,既存の触媒と比較して,高収量,幅広い範囲,優れた性能を提供します.
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
- マテリアルサイエンス 材料科学
背景:
- 結合反応は有機合成において根本的な役割を果たします.
- 効率的で堅牢な触媒システムの開発は,複雑な分子を合成するために不可欠です.
- アリル硫化物合成のための既存の方法は,しばしば範囲または効率の制限があります.
研究 の 目的:
- アリルハリドおよび硫酸塩をチオールと結合するための一般的触媒システムについて報告する.
- CyPF-t-Buリガンドに基づく新しい触媒システムを導入する.
- アリル硫化物とダイアリル硫化物の合成を実証する.
主な方法:
- CyPF-t-Bu リガンド (1) をベースにした触媒システムを利用した.
- アリルハリドおよび硫酸塩の様々なチオールとの結合を調査した.
- アリルトシラートとアルカンチオールとの反応を調べた.
- 硫化水素の代用物を使って,ダイアリル硫化水素を合成した.
主要な成果:
- 優れた収量と,結合反応の幅広い範囲を達成しました.
- 以前の触媒を2〜3桁上回る異常な売上高を観測した.
- 高い機能的グループ耐性を示した.
- アリルトシラートとアルカンチオールからアリル硫化物の合成を初めて報告した.
- 硫化水素の代替物を用いてブロモアレンからダイアリル硫化物を成功に合成した.
結論:
- CyPF-t-Buリガンドは,アリル硫化物合成のための非常に効率的で汎用的な触媒システムを提供します.
- この新しいシステムは,売上高と範囲の観点から,既存の触媒を大幅に上回ります.
- 報告された方法は,重要な硫黄を含む有機化合物の合成のための実用的な進歩を提供します.
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