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  • Silver(I)-catalyzed addition of zirconocenes to glycal epoxides. A new synthesis of alpha-C-glycosides.

Silver(I)-catalyzed addition of zirconocenes to glycal epoxides. A new synthesis of alpha-C-glycosides.

Organic letters (2005-01-28)
Peter Wipf, Joshua G Pierce, Nian Zhuang
ZUSAMMENFASSUNG

[reaction: see text] Hydrozirconation of terminal alkynes, followed by AgClO4-catalyzed in situ addition of the resultant alkenylzirconocenes to 1,2-anhydrosugars (glycal epoxides) leads to alpha-C-glycosides in moderate to high yields.

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Bis(cyclopentadienyl)zirconium(IV)-dichlorid, ≥98%
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