反应详情

To a solution of 3-methyl-2-nitrophenol (2.0 g, 13.06 mmol) in acetic acid (40 mL) was added bromine (0.70 mL, 13.71 mmol) and the mixture was stirred at RT for 5 h. The reaction was poured in to ice water and the yellow precipitate formed was filtered and washed with water and dried in vacua to yield 4-bromo-3-methyl-2-ninophenol. 1H NMR. (400 MHz, CDCl3) δ=2.61 (s, 3H), 2.62 (s, 5H), 6.92 (d, J=8.84 Hz, 1H), 7.66 (d, J=9.09 Hz, 1H) and 9.28 (s, 1 H); MS (ES+): m/z 215.00 [M-17].

1. customthe yellow precipitate formed
2. filtrationwas filtered
3. washwashed with water
4. customdried in vacua
5. customto yield 4-bromo-3-methyl-2-ninophenol