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Synlett 1998; 1998(4): 411-412
DOI: 10.1055/s-1998-1672
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Application of (2E,4E)-5-Bromo-2,4-Pentadienal in Palladium Catalyzed Cross-Coupling: Easy Access to (2E,4E)-2,4-Dienals

Nicolas Vicart* , Dominique Castet-Caillabet, Yvan Ramondenc, Gérard Plé, Lucette Duhamel
  • *Université de Rouen, UPRES A 6014 et IRCOF, F-76821 Mont Saint Aignan Cédex, France; Fax 33 + 02.35.52.24.11; E-mail: Lucette.Duhamel@univ-rouen.fr
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Publication History

Publication Date:
31 December 2000 (online)

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Palladium catalyzed cross-coupling reactions of (2E,4E)-5-bromo-2,4-pentadienal 1 with organozinc reagents gives an easy access to the corresponding (2E,4E)-2,4-dienals. The improved preparation of all trans 1 by isomerization of its (2E,4Z) isomer is reported.

polyenal - palladium - cross-coupling - zinc reagent - isomerization