Diastereoselectivity in 1,3-Dipolar Cycloaddition Reactions between Indolic Nitrones and Electron-Deficient Alkenes
β Scribed by Lucedio Greci; Giampaolo Tommasi; Paolo Bruni; Paolo Sgarabotto; Lara Righi
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 348 KB
- Volume
- 2001
- Category
- Article
- ISSN
- 1434-193X
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## Abstract 1,3βDipolar cycloaddition of nitrones with ethyl vinyl ether or 2,3βdihydrofuran proceeds smoothly in the presence of a catalytic amount (10 mol%) of ytterbium triflate to afford isoxazolidines and dicyclic isoxazolidine respectively with good yields and high stereoselectivity.