反应详情

温度

80 °C

To a solution of rac-4-{[(2R,3R,4R,5S)-3-(3-bromo-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carbonyl]-amino}-benzoic acid methyl ester prepared in Example 340 (0.15 g, 0.25 mmol) in tetrahydrofuran (9 mL) was added an aqueous solution (1 N) of NaOH (9 mL, 9 mmol) and methanol (3 mL). The reaction mixture was heated at 80° C. for 2 h, and the “pH” of the solution was adjusted to 5 by aqueous HCl solution. The mixture was extracted ethyl acetate twice. The combined organic extracts were washed with water, brine, dried over MgSO4, and concentrated to give rac-4-{[(2R,3R,4R,5S)-3-(3-bromo-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carbonyl]-amino}-benzoic acid as a white solid (90 mg, 60%).

1. extractionThe mixture was extracted ethyl acetate twice
2. washThe combined organic extracts were washed with water, brine
3. dry with materialdried over MgSO4
4. concentrationconcentrated