Nitric Acid → 3-(4Chloro-6-fluoro-3-methoxy-2-nitrophenyl)-6-trifluoromethyl-2,4(1H, 3H)-pyrimidinedione

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Reaction Steps

3-(4-Chloro-6-fluoro-3-methoxyphenyl)-6-trifluoromethyl-2,4(1H, 3H)-pyrimidinedione (10.0 g, 29.5 mmol) was slowly added to a stirred mixture of con. sulfuric acid (36 ml) and con. nitric acid (4 ml) with stirring at −15° C. The solution was then slowly warmed to room temperature and allowed to stir for 2 hr. Addition of the solution to ice-water resulted in a light yellow precipitate which was separated by filtration to afford the title compound (9.1 g). NMR data for the compound are listed in Table XVIII.

Provenance & Evidence