反应详情

To a solution of diisopropylamine (0.2 mL, 1.538 mmol) in dry THF (5 mL), was added 1.6M n-BuLi in hexanes (0.96 mL, 1.538 mmol) slowly at −78° C. The reaction mixture was stirred for 30 min, 2-(4-chlorophenyl)thiazole (0.2 g, 1.025 mmol) in THF (10.0 mL) added, the mixture stirred for 30 min, a solution of 1-(pyridin-4-yl)ethanone (0.17 mL, 1.538 mmol) in THF (5.0 mL) added, and the mixture was stirred for 2 hours at −78° C. The reaction mixture was quenched with saturated NH4Cl (50 mL) solution and extracted with EtOAc (2×100 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 column chromatography (1% methanol in dichloromethane) to obtain 1-(2-(4-chlorophenyl)thiazol-5-yl)-1-(pyridin-4-yl)ethanol as off-white solid (0.1 g, 31% yield) in 99.9% HPLC purity. 1H NMR (400 MHz, DMSO-d6): δ 8.51 (d, 2H), 7.87 (d, 2H), 7.82 (s, 1H), 7.51-7.47 (m, 4H), 6.66 (s, 1H), 1.92 (s, 3H); LC-MS m/z calculated for [M+H]+ 317.04. found 317.4.

1. stirringthe mixture stirred for 30 min
2. stirringthe mixture was stirred for 2 hours at −78° C
3. customThe reaction mixture was quenched with saturated NH4Cl (50 mL) solution
4. extractionextracted with EtOAc (2×100 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 column chromatography (1% methanol in dichloromethane)