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Transmetalation of Z-Telluroenynes: Stereoselective Synthesis of Z-Enynols and Their Application in Palladium-Catalyzed Cyclization

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posted on 05.03.2010, 00:00 by Caroline C. Schneider, Helton Caldeira, Bibiana M. Gay, Davi F. Back, Gilson Zeni
The synthesis of various Z-enynols via reaction of vinyllithium intermediate with aldehydes and ketones is described. The subsequent cyclization of a wide variety of Z-enynols afforded substituted furans and dihydrofurans with high regioselectivity under mild reaction conditions.

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