1,3-Dipolar Cycloaddition of Nitrones with Electron-richAlkenes Catalyzed by Yb(OTf)3

• 来源期刊: 中国化学（英文版）
• 学科: 化学
• 年，卷（期）: 2001,（4）
• 所属期刊栏目: ARTICLES
• 页码范围: 412-418
• 页数: 7页
• 分类号: O6
• 语种: 英文

摘要

1,3-Dipolar cycloaddition of nitrones with ethyl vinyl ether or 2, 3-dihydrofuran proceeds smoothly in the presence of a catalytic amount (10 mol% ) of ytterbium triflate to afford isoxazolidines and dicyclic isoxazolidine respectively with good yields ahd high stereoselectivity.