V. Sosnovskikh, R. Irgashev, M. A. Barabanov
Aug 1, 2006
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0
Influential Citations
28
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Journal
Synthesis
Abstract
2-Hydroxy-2-(polyhaloalkyl)chroman-4-ones react with diethoxymethyl acetate at 140-150 °C for 15 minutes to give 3-(polyhaloacyl)chromones in good yields. The reactions of these compounds with amines proceeds at C-2 with pyrone ring-opening and formation of 2-(alkyl/arylaminomethylene)-2-hydroxy-2-(polyfluoroalkyl)chroman-4-ones.