Tetrahedron Letters p. 2467 - 2469 (2018)
Update date:2022-08-11
Topics:
Ryan, Wilson
Bedard, Korey
Baidilov, Daler
Tius, Marcus
Hudlicky, Tomas
The base-catalyzed condensation reaction between (E)-4-phenylbut-2-enal and phenylpropargyl aldehyde recently reported in the literature to provide formylcyclobutadiene was repeated under the published conditions. The product obtained was identified as (E)-5-phenyl-2-((E)-styryl)pent-2-en-4-ynal rather than the reported 2-phenyl-3-styrylcyclobutadiene-1-carboxaldehyde. The structure assignment is supported by NMR and IR data and a x-ray structure of the crystalline alcohol obtained by Luche reduction.
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