反应详情

To a solution of diisopropylamine (0.12 mL, 0.833 mmol) in dry THF (5 mL) was added n-BuLi in hexanes (1.6M, 0.7 mL, 1.111 mmol) slowly at −78° C. The mixture was stirred for 30 min, 2-(6-fluoropyridin-3-yl)thiazole (0.1 g, 0.555 mmol) in THF (5.0 mL) at −78° C. added, and the mixture stirred for 30 min. A solution of 1-(pyridin-4-yl)ethanone (0.09 mL, 0.833 mmol) in THF (5.0 mL) was added to reaction mixture, stirred for 2 hours at −78° C. The reaction mixture was quenched with saturated NH4Cl (50 mL) solution and extracted with EtOAc (3×50 mL). The organic layer was washed with water (2×50 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to obtain crude product. The crude product was purified by preparative TLC (3% methanol in dichloromethane) to obtain 1-(2-(6-fluoropyridin-3-yl)thiazol-5-yl)-1-(pyridin-4-yl)ethanol as off-white solid (0.035 g, 22% yield) in 99.7% HPLC purity. 1H NMR (400 MHz, DMSO-d6): δ 8.31 (s, 1H), 8.21 (d, 2H), 7.79 (d, 1H), 7.71 (d, 1H), 7.67 (s, 1H), 7.11 (s, 1H), 6.91 (d 2H), 1.83 (s, 3H); LC-MS m/z calculated for [M+H]+302.07. found 302.1.

1. stirringthe mixture stirred for 30 min
2. stirringstirred for 2 hours at −78° C
3. customThe reaction mixture was quenched with saturated NH4Cl (50 mL) solution
4. extractionextracted with EtOAc (3×50 mL)
5. washThe organic layer was washed with water (2×50 mL)
6. dry with materialdried over Na2SO4
7. filtrationfiltered
8. concentrationconcentrated under reduced pressure
9. customto obtain crude product
10. customThe crude product was purified by preparative TLC (3% methanol in dichloromethane)