反应详情

温度

80 °C

To a solution of 5-bromo-4-isopropyl-thiazole (0.131 g. 1 mmol), Pd(PPh3)4(56 mg, 0.05 mmol) and potassium carbonate (0.196 g, 1 mmol) in DME/H2O (5 ml/2 ml) was added 3-(5-methyl-pyridin-2-yl)-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzoic acid methyl ester (0.250 g, 1 mmol) under N2 atmosphere. The reaction mixture was heated to 80° C. for three hours, then cooled and stirred at room temperature for 18 hours. The reaction mixture was poured into EtOAc, and the organic phase was separated, washed with water and brine, dried (MgSO4), filtered and concentrated under reduced pressure. The reaction mixture was cooled and solvent was evaporated under reduced pressure. The residue was purified by flash-chromatography (15% EtOAc in hexanes) to give 85 mg of 3-(5-Isopropyl-thiazol-4-yl)-5-(5-methyl-pyridin-2-yl)-benzoic acid methyl ester.

1. temperaturecooled
2. customthe organic phase was separated
3. washwashed with water and brine
4. dry with materialdried (MgSO4)
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. temperatureThe reaction mixture was cooled
8. customsolvent was evaporated under reduced pressure
9. customThe residue was purified by flash-chromatography (15% EtOAc in hexanes)