反应详情

温度

50 °C

Ethyl 2-[(3,5-bis-trifluoromethyl-benzyl)-(5′-isopropyl-2′-methoxy-4-trifluoromethyl-biphenyl-2-ylmethyl)-amino]-pyrimidine-5-carboxylate (1.1 g) is dissolved in a mixed solvent of ethanol (18 ml) and tetrahydrofuran (20 ml) and thereto is added a 2M-aqueous sodium hydroxide solution (3 ml), and the mixture is stirred at 50° C. for 1 hour and a half. The reaction solution is concentrated under reduced pressure and thereto is added a 1N-hydrochloric acid and the mixture is extracted with ethyl acetate. The organic layer is washed with a saturated brine, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting residue is purified by silica gel column chromatography (chloroform:methanol=25:1) to give 2-[(3,5-bis-trifluoromethyl-benzyl)-(5′-isopropyl-2′-methoxy-4-trifluoromethyl-biphenyl-2-ylmethyl)-amino]-pyrimidine-5-carboxylic acid (700 mg). MS (m/z): 672 [M+H]+

1. concentrationThe reaction solution is concentrated under reduced pressure
2. additionis added a 1N-hydrochloric acid
3. extractionthe mixture is extracted with ethyl acetate
4. washThe organic layer is washed with a saturated brine
5. dry with materialdried over magnesium sulfate
6. concentrationconcentrated under reduced pressure
7. customThe resulting residue is purified by silica gel column chromatography (chloroform:methanol=25:1)