クロロアルキンと非活性化アルケンの間のオカタライズされた分子間 [2+2] サイクル添加
Yu-Bin Bai1,2, Zaigang Luo2, Yuguang Wang2
1Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy , Northwest A&F University , Yangling 712100 , China.
Journal of the American Chemical Society
|April 6, 2018
まとめ
ゴールド触媒は,クロロアルキンの非活性化アルケンとの効率的な [2+2] サイクル添加を可能にし,単体置換されたアルケンにさえ挑戦します. この金触媒反応は,価値あるサイクロブテンの産物を合成するための優れた地域選択性とステレオ特異性を提供します.
科学分野:
- 有機化学
- キャタリシス
- 合成方法論
背景:
- [2+2]サイクロアディションは,ストレントサイクロブテンの合成の鍵となる反応である.
- 既存の方法は,非活性化または単位置換アルケーンとしばしば闘う.
研究 の 目的:
- 効率的な金触媒による分子間 [2+2] サイクル添加を開発する.
- クロロアルキンと活性化されていないアルケンを基板として利用する.
- サイクロブテンの合成のための既存の合成戦略の限界を克服する.
主な方法:
- 分子間 [2+2] サイクル添加反応のための金触媒を用いる.
- 異なる2種類のクロロアルキンと様々な非活性アルケンを利用する.
- 単位置換および1,2-非置換の非活性化アルケンの反応を調査する.
主要な成果:
- クロロアルキンと非活性化アルケンの間の効率的な金触媒 [2+2] サイクル添加を達成した.
- 挑戦的な単位置換未活性化アルケンの前例のない反応性を示した.
- 優秀な地域選考結果が得られ,文献の先例を上回った.
- 1,2-非置換された非活性化アルケンの場合,主にステレオ特異的な反応が観察された.
- 合成されたサイクロブテンの製品
結論:
- 価値あるサイクロブテンの合成のための多用途の金触媒サイクロアディションを開発した.
- この方法は,その後のクロスカップリング反応によって,利用可能なサイクロブテンの誘導体を拡大します.
- この複合分子反応の合成的有用性を強調する.
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