反应详情

A mixture of ethyl 2-(5-chloro-6-(cyclopropylmethoxy)-4′-(trifluoromethyl)biphenyl-3-yl)-3-cyclopropylpropanoate (100 mg, 0.214 mmol) and lithium hydroxide monohydrate (27 mg, 0.642 mmol) in a MeOH/THF/Water solvent mixture (5 ml/5 ml5/ml) was stirred for 3 h at room temperature. Upon completion of reaction, the volatiles were removed under reduced pressure. The residue was diluted with water, acidified with 5% HCl solution and extracted with EtOAc (×2). The combined organic layers were washed with water, dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by Flash Column Chromatography to give 2-(5-chloro-6-(cyclopropylmethoxy)-4′-(trifluoromethyl)biphenyl-3-yl)-3-cyclopropylpropanoic acid in 56% yield. (52.6 mg). 1H NMR (CDCl3): 7.71 (s, 4H); 7.42 (s, 1H); 7.23 (s, 1H); 3.68 (t, 1H); 3.41 (d, 2H); 1.93 (m, 1H); 1.77 (m, 1H); 0.97 (bs, 1H); 0.71 (bs, 1H); 0.42 (m, 4H); 0.12 (m, 2H); 0.1 (m, 2H).

1. customUpon completion of reaction
2. customthe volatiles were removed under reduced pressure
3. additionThe residue was diluted with water
4. extractionextracted with EtOAc (×2)
5. washThe combined organic layers were washed with water
6. dry with materialdried over Na2SO4
7. filtrationfiltered
8. concentrationconcentrated in vacuo
9. customThe residue was purified by Flash Column Chromatography