反应详情

To a flask containing pyridin-2-yl-thiazol-2-yl-amine (5-2, 3.92 g, 0.0221 mol) was added acetic acid. Bromine (1.14 mL, 0.0221 mol) was then added dropwise to the stirred solution at ambient temperature. The reaction was stirred for 15 min, resulting in an orange-white precipitate. At 15 min, 100 mL H2O were added and solid NaHCO3 introduced, causing a large amount of foaming. The product was obtained as a tan colored precipitate, which was washed with 1.5L H2O and dried under high vacuum overnight. 1H NMR (DMSO-d6): δ 11.53 (bs, 1H), 8.31 (d, 1H, J=3.3 Hz), 7.73 (t, 1H, J=7.6 Hz), 7.45 (s, 1H), 7.05 (d, 1H, J=8.4 Hz), 6.96 (t, 1H, J=5.5 Hz). Mp: 210-212° C. (dec). [M+H]+=255.9.

1. customresulting in an orange-white precipitate
2. waitAt 15 min
3. customThe product was obtained as a tan colored precipitate, which
4. washwas washed with 1.5L H2O
5. customdried under high vacuum overnight