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Synthesis 1989; 1989(3): 215-217
DOI: 10.1055/s-1989-27206
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A Facile Synthesis of 2,4-Dialkoxy-, 2-Alkoxy-4-phenoxy- and 2,4-Diphenoxy-6-trifluoromethyl-3,4-dihydro-2H-pyrans. Hetero-Diels-Alder Reactions of trans-β-Trifluoroacetylvinyl Ethers with Various Vinyl Ethers

Masaru Hojo* , Ryōichi Masuda, Etsuji Okada
  • *Department of Industrial Chemistry, Faculty of Engineering, Kobe University, Rokkodai, Nada, Kobe 657, Japan
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Publication Date:
17 September 2002 (online)

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2,4-Dialkoxy-, 2-alkoxy-4-phenoxy-, and 2,4-diphenoxy-6-trifluoromethyl-3,4-dihydro-2H-pyrans are obtained in high yields by the hetero-Diels Alder reaction of trans-β-trifluoroacetylvinyl ethers with various vinyl ethers under mild conditions.

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