反应详情

温度

0 °C

To the solution of rac-(2′S,3′R,4′S,5′R)-6-chloro-4′-(3-chloro-2-fluoro-phenyl)-2′-(2,2-dimethyl-propyl)-5-fluoro-2-oxo-1,2-dihydro-spiro[indole-3,3′-pyrrolidine]-5′-carboxylic acid (4-cyano-phenyl)-amide (0.1 g, 0.17 mmol) prepared in Example 48 in DMSO (5 mL) at 0° C. was added an aqueous solution (30% Aldrich) of H2O2 (0.39 g, 3.4 mmol), then aqueous solution (1N) of NaOH (1.7 mL, 1.7 mmol) was added dropwise. The reaction mixture was stirred at 0° C. for 1 h. The mixture was partitioned between ethyl acetate and saturated aqueous Na2SO3 solution. The organic layer was separated, washed with water, brine, dried over MgSO4, and concentrated. The residue was triturated with dichloromethane and hexanes to give rac-(2′S,3′R,4′S,5′R)-6-chloro-4′-(3-chloro-2-fluoro-phenyl)-2′-(2,2-dimethyl-propyl)-5-fluoro-2-oxo-1,2-dihydro-spiro[indole-3,3′-pyrrolidine]-5′-carboxylic acid (4-carbamoyl-phenyl)-amide as a white solid (Yield 0.1 g, 97%).

1. customThe mixture was partitioned between ethyl acetate and saturated aqueous Na2SO3 solution
2. customThe organic layer was separated
3. washwashed with water, brine
4. dry with materialdried over MgSO4
5. concentrationconcentrated
6. customThe residue was triturated with dichloromethane and hexanes