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ChemInform Abstract: Synthesis of (E)- and (Z)-α-Alkylidene-γ-aryl-γ-butyrolactones via Alkenylalumination of Oxiranes.

✍ Scribed by P. Veeraraghavan Ramachandran; Garrett Garner; Debarshi Pratihar

Publisher
John Wiley and Sons
Year
2008
Weight
49 KB
Volume
39
Category
Article
ISSN
0931-7597

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ChemInform Abstract: Stereoselective Syn
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Stereoselective Synthesis of (Z)-α-Alkylidene-γ-butyrolactone from 2-Alkyn-1-one. -Reduction of the recently reported (Z)-3-iodo-3-alken-1ones (I) with sodium borohydride gives the corresponding alkenols (II) without loss of stereochemistry. These undergo a Pd(0)-catalyzed cyclization with CO to for