モノメア,ディメア,トリメアフォスファザンの間の変換:オレフィンのNPアナログをオリゴメライズする
Neil Burford1, T Stanley Cameron, Korey D Conroy
1Department of Chemistry, Dalhousie University, Halifax, Nova Scotia B3H 4J3, Canada. neil.burford@dal.ca
Journal of the American Chemical Society
|November 21, 2002
まとめ
大量の置換剤は,イミノフォスフィンとディフォスファゼンの結晶混合物の分離を可能にしました. ステリック相互作用は均衡に影響を与え,環膨張反応を引き起こし,トリフォスファゼンを形成した.
科学分野:
- オーガノフォスファルス 化学 化学
- 超分子化学 超分子化学
- クリスタログラフィーです.
背景:
- イミノフォスフィンとディフォスファザンは,リン-窒素化合物のクラスです.
- 結合行動と反応性を理解することは,合成化学にとって極めて重要です.
研究 の 目的:
- イミノフォスフィン1とディフォスファゼン2の結晶混合物を分離し,特徴づけること.
- これらの化合物の結合と反応性におけるステリック相互作用の役割を調査する.
主な方法:
- 構造的特徴化のための単結晶X線 difraktion. 構造的特徴化のための単結晶X線 difraktion.
- 化合物の識別のための光譜法 (NMR,IR).
- 化学反応モニタリング.
主要な成果:
- 大量のR群 (Mes*, X = OTf) を有するイミノフォスフィン1とディフォスファゼン2の結晶混合物の分離と特徴付けに成功しました.
- モノマー/ダイマー均衡がステリック障害によって影響される証拠.
- その後の環膨張反応の観測により,トリフォスファゼン3 (R=Dipp,X=Cl) が得られた.
結論:
- 大容量の置換剤のステリック効果は,イミノフォスフィンとディフォスファザンの分離および集積状態を制御する鍵です.
- 観測された環膨張反応は,これらのリン-窒素システムのダイナミックな性質と潜在的な変換を強調しています.
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