反应详情

温度

90 °C

3-(2-Chloropyridin-4-yloxy)isonicotinonitrile (0.0650 g, 0.281 mmol) (prepared as in Example 2), 1-(4-(2-aminothiazol-4-yl)piperidin-1-yl)ethanone (0.0822 g, 0.365 mmol), potassium phosphate (0.137 g, 0.421 mmol), tris(dibenzylideneacetone)dipalladium (0) (0.00642 g, 0.00701 mmol) and 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene (0.00812 g, 0.0140 mmol) were combined and the vessel was capped with rubber septum. The vessel was evacuated and purged with nitrogen three times. Toluene (2 mL) and degassed water (2 mL) were added and the resulting mixture was heated to 90° C. and agitated overnight. After cooling the mixture was diluted with 50 ml of ethyl acetate and washed with sodium bicarbonate, brine, dried and evaporated. The crude product was purified by preparative HPLC (Parallex) and converted to HCl salt by treatment with 2M HCl in ether to provide the title compound (0.0150 g, 12.71% yield) as white solid. 1H NMR (CDCl3) δ 1.52-1.62 (m, 2H), 1.98-2.06 (m, 2H), 2.10 (s, 3H), 2.65 (t, 1H), 2.80 (t, 1H), 3.13 (t, 1H), 3.85(d, 1H), 4.66 (d, 1H), 6.35 (s, 1H), 6.45 (s, 1H), 6.50 (d, 1H), 7.15 (s, 1H), 7.40 (d, 1H), 8.05 (s, 1H), 9.01 (bs, 1H).

1. customthe vessel was capped with rubber septum
2. customThe vessel was evacuated
3. custompurged with nitrogen three times
4. customToluene (2 mL) and degassed water (2 mL)
5. additionwere added
6. temperatureAfter cooling the mixture
7. additionwas diluted with 50 ml of ethyl acetate
8. washwashed with sodium bicarbonate, brine
9. customdried
10. customevaporated
11. customThe crude product was purified by preparative HPLC (Parallex)