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Diastereoselectivity in the Cycloaddition of 1-Benzyl-2-piperazinone Nitrone with Alkenes.

โœ Scribed by Ronald C. Bernotas; Lily Sing; Dirk Friedrich


Publisher
John Wiley and Sons
Year
2005
Weight
19 KB
Volume
36
Category
Article
ISSN
0931-7597

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Yb(OTf)3-Catalyzed 1,3-dipolar cycloaddi
โœ Satoshi Minakata; Toshihiro Ezoe; Keiko Nakamura; Ilhyong Ryu; Mitsuo Komatsu ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 231 KB

Yb(OTf)3 (ytterbium trifluoromethanesulfonate)-catalyzed diastereoselective 1,3dipolar cycloaddition of a nitrone with ct,13-unsaturated carbonyl compounds was studied. While endo-cycloadduct was obtained from the reaction of C, N-diphenylnitrone with N-crotonoyloxazolidinone or N-crotonyl-2-pyrroli