反应详情

温度

-78 °C

2-Bromopyridine (0.74 mL, 7.90 mmol) was taken into THF (30 mL) and cooled to −78° C. Then BuLi (4.8 mL, 7.90 mmol, 1.6 M solution in hexane) was added dropwise and then stirred for 30 minutes. Next, 4-Chloro-8-(trifluoromethyl)-3-quinolinecarboxylic acid ethyl ester (2.0 g, 6.58 mmol) in THF (10 mL) was added rapidly and stirred at −78° C. for 4 hours. The reaction was poured into water/saturated NH4Cl solution and then extracted with ethyl acetate. The organic layer was dried over MgSO4, filtered and concentrated. The resulting material was purified via column chromatography using 15% ethyl acetate in hexane as the eluent to yield 0.823 g of (4-chloro-8-trifluoromethyl-quinolin-3-yl)-pyridin-2-yl-methanone as a yellow solid.

1. stirringstirred at −78° C. for 4 hours
2. extractionextracted with ethyl acetate
3. dry with materialThe organic layer was dried over MgSO4
4. filtrationfiltered
5. concentrationconcentrated
6. customThe resulting material was purified via column chromatography