Nitric Acid → 5'-Fluoro-2'-hydroxy-3'-nitroacetophenone

참여 물질

반응 조건

반응 단계

5-Fluoro-2-hydroxyacetophenone (20.0 g) was dissolved in concentrated sulphuric acid (150 ml), and the mixture was cooled to -20° C. A mixture of concentrated nitric acid (17.0 ml; s.g. 1.42) in concentrated sulphuric acid (18.0 ml) was then added to it, dropwise with stirring, keeping the temperature of the reaction mixture between -15° and -5° C. The reaction mixture was then allowed to warm up to -5° C. and was poured into iced water (2 liters). The yellow precipitated product was filtered off and recrystallised from ethanol to give 5-fluoro-2-hydroxy-3-nitroacetophenone (11.9 g), m.p. 87°-90° C.

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