反应详情

温度

62.5 °C

4-Chloro-5-(4-fluorophenyl)-6-[4-(methylsulfonyl)phenyl]-2-(trifluoro methyl)pyrimidine (0.15 g, 0.35 mmol) was treated with 1-(5-nitropyridin-2-yl)piperazine (0.087 g, 0.418 mmol) and diisopropylethylamine (0.06 mL, 0.35 mmol), acetonitrile (2.5 ml) and the reaction mixture was heated at 60-65° C. for 2 hours. Subsequently the reaction mixture was precipitated by the addition of diisopropyl ether (2 ml). The above-obtained solid (0.11 g, 0.182 mmol) was taken up in acetic acid (2 ml) and tin (II) chloride dihydrate (0.123 g, 0.182 mmol) was added to it. Stirring was continued further for 11 hours and then the reaction mixture was poured onto ice-cold water and extracted with ethyl acetate (2×25 ml). After neutralization with sodium bicarbonate, the organic layer was evaporated to obtain the crude material, which was purified by column chromatography (2% MeOH in dichloromethane) to yield the title compound. 1H-NMR (DMSO-d6) δ: 1.99 (s, 3H), 3.19 (s, 3H), 3.29-3.40 (m, 8H), 6.77 (d, 1H), 7.19-7.23 (m, 2H), 7.31-7.34 (m, 2H), 7.36 (d, 2H), 7.74 (d, 1H), 7.80 (d, 2H), 8.24 (d, 1H), 9.77 (s, 1H, D2O exchangeable); MS m/z: 615.1 (M++1).

1. customSubsequently the reaction mixture was precipitated by the addition of diisopropyl ether (2 ml)
2. additionthe reaction mixture was poured onto ice-cold water
3. extractionextracted with ethyl acetate (2×25 ml)
4. customAfter neutralization with sodium bicarbonate, the organic layer was evaporated
5. customto obtain the crude material, which
6. customwas purified by column chromatography (2% MeOH in dichloromethane)