反应详情

温度

70 °C

Methyl 2-(4-((tert-butoxycarbonyl)amino)-1H-indazol-1-yl)-2-(4-chlorophenyl)butanoate (0.5 g, 1.13 mmol) (enantiomer A intermediate), as described in example 18 step D, as described in Example 18 step D, was dissolved in a mixture of 1,4-dioxane (1.0 mL) and water (0.25 mL) followed by addition of LiOH (0.27 g, 11.26 mmol). The mixture was stirred at 70° C. for 5 hours, then concentrated to remove solvent. The residue was dissolved in water (20 mL) and acidified with 1 N aq. HCl solution (11.3 mL) to give white precipitate. The solid was filtered, washed with water, and dried under vacuum to give title compound. LC/MS m/z=430.1[M+H]+.

1. concentrationconcentrated
2. customto remove solvent
3. dissolutionThe residue was dissolved in water (20 mL)
4. customto give white precipitate
5. filtrationThe solid was filtered
6. washwashed with water
7. customdried under vacuum