メイングループ カップリング 周辺ギャップ
Laurence J Taylor1, Michael Bühl1, Brian A Chalmers1
1University of St Andrews , School of Chemistry, Purdie Building, North Haugh, St Andrews, Fife KY16 9ST, United Kingdom of Great Britain and Northern Ireland.
Journal of the American Chemical Society
|December 2, 2017
まとめ
環置換化学は,C-H結合形成による新しいP-P/P-As結合反応を可能にします. この取り扱い反応性により,メイングループ脱水結合が拡大し,クリーンで効率的でダイアステレオ選択的な変換がもたらされます.
科学分野:
- メイングループ化学
- オルガノフォスファース化学
- ラジカル化学
背景:
- ペリ置換化学は 独特の反応性を持っています
- 主群脱水結合反応は確立されているが,限られている.
- 幾何学的制約は,メイングループ要素の反応性に影響を与えます.
研究 の 目的:
- 新しい結合反応のための周置換化学を調査する.
- C-H結合形成による P-P/P-As結合を研究する.
- メイングループ脱水結合の範囲を拡大する.
主な方法:
- ペリ置換先駆体を用いて結合反応を行う.
- ラジカルイニシアター (例えば,アゾビス ((イソブチロニトリル)) を使って反応運動を研究する.
- 反応メカニズムを解明するために,密度関数理論 (DFT) の計算を行う.
主要な成果:
- 独特のP-PとP-As結合反応が同時にC-H結合を形成した.
- 70-140 °Cで清潔で定量的で高度にダイアステレオ選択的変換が実証されている.
- リンを中心としたラジカルとプロピルラジカルを含む 根源ベースのメカニズムを特定した.
結論:
- 環置換化学は,新しいメイングループカップリングのための強力なプラットフォームを提供します.
- 脱水結合反応の有意な拡張を代表する.
- 頑丈な足場によって課される幾何学的な制約は,メイングループ要素の反応性を制御するために不可欠です.
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