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

✍ Scribed by Chang-Tao Qian; Long-Cheng Wang; Rui-Fang Chen

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 456 KB
Volume: 19
Category: Article
ISSN: 0256-7660
DOI: 10.1002/cjoc.20010190417

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✦ Synopsis

Abstract

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 and high stereoselectivity.

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