反应详情

温度

100 °C

To a mixture of 2-chloro-4-(trifluoromethyl)pyridine (19.9 g, 0.11 mol), 4-(methylthio)phenylboronic acid (21.9 g, 0.13 mol), 1M aqueous sodium carbonate (180 mL) and 1,2-dimethoxyethane (270 mL) under an atmosphere of nitrogen was added palladium tetrakistriphenylphosphine (3.78 g, 3.3 mmol) and the reaction heated at 100° C. for 14 hours. After cooling and concentration in vacuo, the residue was partitioned between ethyl acetate (350 mL) and water (400 mL) and separated. The aqueous layer was further extracted with ethyl acetate (2×150 mL) and the combined organic layers were dried over sodium sulfate and concentrated in vacuo. Filtration through a pad of silica gel (200 g) eluting with a gradient of ethyl acetate in cyclohexane gave the title compound (29.4 g) LC retention time 3.62 mins, MS m/z 269 (MH+).

1. temperatureAfter cooling
2. concentrationconcentration in vacuo
3. customthe residue was partitioned between ethyl acetate (350 mL) and water (400 mL)
4. customseparated
5. extractionThe aqueous layer was further extracted with ethyl acetate (2×150 mL)
6. dry with materialthe combined organic layers were dried over sodium sulfate
7. concentrationconcentrated in vacuo
8. filtrationFiltration through a pad of silica gel (200 g)
9. washeluting with a gradient of ethyl acetate in cyclohexane