Potassium Nitrate → 1-Chloro-2,4-difluoro-5-nitrobenzene

Participants

Reaction Steps

To a stirred solution of 1-chloro-2,4-difluorobenzene (0.829 g, 5.58 mmol) in concd H2SO4 (8.0 mL) at 0° C., KNO3 (0.565 g, 5.59 mmol) was added in one portion. The resulting solution was allowed to warm to room temperature and stirred overnight at room temperature. It was then poured into ice (80 g) and extracted with ethyl acetate (75 mL). The ethyl acetate was dried over anhydrous Na2SO4, removed under vacuum, and the resulting oil was dried further under vacuum to afford 1.007 g (93%) pure (1H NMR) title compound as a light red oil; 1H NMR (CDCl3) δ7.17 (dd, 1H, J1 =9.9 Hz, J2 =8.4 Hz), 8.24 (t, 1H, J=7.5 Hz).

Provenance & Evidence