アシンメトリックな銅 (((I) -アジド-アルキンサイクロアディションを四次性オキシンドールに触媒化した
Feng Zhou1, Chen Tan, Jing Tang
1Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China.
Journal of the American Chemical Society
|July 17, 2013
まとめ
研究者は,複雑な分子を作るための銅触媒反応を開発しました. この方法は,高いエナチオ選択性を持つキラル四次性オキシンドールを効率的に生成し,貴重な化合物を合成する重要なステップです.
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
- アシンメトリック・シンセシス
背景:
- 四次性オキシンドールは,医薬品における重要な構造モチーフである.
- それらの非対称合成のための効率的な方法の開発は,依然として課題です.
研究 の 目的:
- 新しいエナチオセレクティブ・コッパー (I) 催化アジド・アルキン・サイクロアディションを報告する.
- オキシンドールベースの1,6-ヘプタディインの非対称な非対称化を達成するために.
主な方法:
- アジド-アルキンサイクル添加のための銅 ((I) カタリストを使用しました.
- オキシンドールベースの1,6-ヘプタディインを基板として使用しています.
- アシンメトリックな非対称化を成し遂げ,四次中心を形成する.
主要な成果:
- 1,2,3-トリアゾール部分を含む四次性オキシンドールを成功して合成しました.
- 高いエナチオセレクティビティが達成され,エナチオメア過剰 (ee) は84%から98%の範囲です.
結論:
- 開発された方法は,エナチオメリックに濃縮された四次性オキシンドールへの効率的な経路を提供します.
- このアプローチは,複雑なキラル分子にアクセスするための貴重なツールを提供します.
さらに関連する動画
関連する概念動画
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Preparation of 1° Amines: Azide Synthesis
Direct alkylation of ammonia produces polyalkylated amines, along with a quaternary ammonium salt. To exclusively prepare primary amines, the azide synthesis method can be used.
Azide ions act as good nucleophiles and react with unhindered alkyl halides to form alkyl azides. Alkyl azides do not participate in further nucleophilic substitution reactions, thereby eliminating the chances of polyalkylated products. Alkyl azides are reduced by hydride-based reducing agents, like lithium aluminum...
Azide ions act as good nucleophiles and react with unhindered alkyl halides to form alkyl azides. Alkyl azides do not participate in further nucleophilic substitution reactions, thereby eliminating the chances of polyalkylated products. Alkyl azides are reduced by hydride-based reducing agents, like lithium aluminum...


