反应详情

温度

100 °C

A mixture of ethyl 2-(3-bromo-5-chloro-4-(cyclopropylmethoxy)phenyl)acetate (4 g, 0.011 mol), 4-Trifluoromethyl phenylboronic acid (2.6 g, 0.012 mol), Palladium Tetrakis (triphenylphosphine) (1.3 g, 0.001 mol), Cesium carbonate (13.1 g, 0.04 mol) in DMF/water mixture (100 ml/5 ml) was stirred overnight at 100° C. Upon completion of reaction, the precipitate were removed by filtration. The filtrate was diluted with water and extracted with EtOAc twice. The combined organic layers were washed with water and brine, dried over Na2SO4 and concentrated in vacuo. The residue was purified by Flash Column Chromatography to give ethyl 2-(5-chloro-6-(cyclopropylmethoxy)-4′-(trifluoromethyl)biphenyl-3-yl)acetate in 57% yield. (2.7 g). 1HNMR (CDCl3): 7.69 (bs, 4H); 7.36 (s, 1H); 7.17 (s, 1H); 4.18 (q, 2H); 3.59 (s, 2H); 3.39 (d, 2H); 1.28 (t, 3H); 0.96 (m, 1H); 0.41 (m, 2H); 0.01 (m, 2H).

1. customUpon completion of reaction
2. customthe precipitate were removed by filtration
3. additionThe filtrate was diluted with water
4. extractionextracted with EtOAc twice
5. washThe combined organic layers were washed with water and brine
6. dry with materialdried over Na2SO4
7. concentrationconcentrated in vacuo
8. customThe residue was purified by Flash Column Chromatography