反应详情

A solution of 2-bromo-1,4-dichlorobenzene (1.000 g, 4.443 mmol, Aldrich, used as received) in fuming HNO3 (7.0 mL) was stirred at 50° C. for 1.5 h and poured into ice (80 g). Yellowish white solid was filtered, washed with water (10 mL), and dried under vacuum to obtain 1.14 g (95%) of pure (CH NMR) title compound as a yellowish white powder; m.p. 50-53° C. (lit m.p. 57-58° C.; Fox, D. L. and Turner, E. E., J. Chem. Soc. 1859 (1930)); 1H NMR (CDCl3): δ 7.863 (s, 1H), 8.030 (s, 1H). This material was used as such for the next reaction.

1. filtrationYellowish white solid was filtered
2. washwashed with water (10 mL)
3. customdried under vacuum