アルケニルイソシアネートとアルキネスのロジウム触媒 [2 + 2 + 2] サイクル添加である
1Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA.
Journal of the American Chemical Society
|March 2, 2006
まとめ
新しいロジウム ((I) 触媒 [2+2+2] サイクロアディション反応は,アルケニルイソシアネートとアルキンからインドリジノンとキノリジノンを効率的に合成します. この方法により,珍しいアイソシアネート断片化経路が,ビニログアスアミドを形成することも可能になります.
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:
- [2+2+2]サイクロアディションは,サイクロ分子を構築するための強力なツールです.
- ロジウム ((I) 触媒は,様々なサイクル添加反応に有効である.
- イソシアネートは,有機合成における汎用的な構成要素である.
研究 の 目的:
- 新しいロジウム ((I) -触媒 [2+2+2]サイクル添加反応を開発する.
- 置換されたインドリジノンとキノリジノンの合成を調査する.
- イソシアネート断片化を含む異常な反応経路を調査する.
主な方法:
- アルケニルイソシアネートと対称な内部アルキンの反応.
- ロジウム (((I) 触媒,特に[Rh (((エチレン) 2Cl]2をP (((4-OMe-C6H4) 3.4) で利用する.
- 反応混合物を溶媒としてトルーエンで加熱する.
主要な成果:
- 代替インドリジノンとキノリジノンの合成が成功しました.
- 希少なアイソシアネート断片化経路の実証.
- インドリジノンの構造に埋め込まれたビニログスアミドの形成.
結論:
- 新しいロジウム ((I) -触媒化された [2+2+2]サイクロアディションが確立されました.
- この反応は,価値あるヘテロサイクリック化合物への効率的なアクセスを提供します.
- 観察されたイソシアネート断片化は,ユニークな合成の可能性を提供します.
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