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Ethoxide-Mediated Condensation of γ- Tert -Butylallenoate and Aldehydes: Facile Stereoselective Synthesis of Conjugated Dienes and Enynes

  • Silong Xu
  • , Liyi Wang
  • , Yuhai Tang
  • , Zhengjie He
  • Nankai University
  • Xi'an Jiaotong University

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The condensation reaction of a γ-tert-butylallenoate, ethyl 5,5-dimethylhexa-2,3-dienoate, and aldehydes in the presence of sodium ethoxide is described. A range of aldehydes readily reacts with γ-tert- butylallenoate and ethoxide providing a straightforward synthesis of 1,2,3,4-tetrasubstituted conjugated dienes in moderate to good yields and exclusive E,E selectivity. For some aldehydes, the condensation chemoselectively delivers conjugated enynes in good yields and exclusive E selectivity.

Original languageEnglish
Article numberSS-2014-H0176-OP
Pages (from-to)2085-2092
Number of pages8
JournalSynthesis
Volume46
Issue number15
DOIs
StatePublished - Aug 2014

Keywords

  • allenoate
  • condensation
  • conjugated diene
  • enyne
  • tandem reaction

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