V. Sosnovskikh, B. Usachev
Jun 1, 2002
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Journal
Synthesis
Abstract
The reaction of 2-hydroxyacetophenones with trichloroacetyl chloride in the presence of pyridine at -30 °C followed by treatment of the reaction mixture with potassium tert-butylate affords 2-hydroxy-2-trichloromethylchroman-4-ones. Dehydration then provides the 2-trichloromethyl-chromones.