Direct formylation of enol ethers using cyanuric chloride and N,N-dimethylformamide

Duen Ren Hou, Chong Si Sun, Wu Sian Sie, Jing Yu Jian, Yun Hsu

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4 Scopus citations


A new method to prepare α,β-unsaturated enol aldehydes is described. 3-Ethoxymethacrolein (1) and 5-formyl-3,4-dihydro-2H-pyran (5) were effectively prepared from enol ethers and the Vilsmeier-Haack type complex, derived from cyanuric chloride and DMF. One byproduct, amidine 4, was also characterized.

Original languageEnglish
Pages (from-to)671-674
Number of pages4
JournalJournal of the Chinese Chemical Society
Issue number3
StatePublished - 2004


  • Enol ether
  • Formylation
  • Vilsmeier-Haack complex
  • α,β-Unsaturated aldehyde


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