反应详情

温度

60 °C

To a solution of (S)-8-(2-amino-6-((R)-1-(4-bromo-2-(3-methyl-1H-pyrazol-1-yl)phenyl)-2,2,2-trifluoroethoxy)pyrimidin-4-yl)-2-((benzyloxy)carbonyl)-2,8-diazaspiro[4.5]decane-3-carboxylic acid (product of Step 3, Example 10m) (1.2 g, 1.6 mmol) in DMF (16 mL) was added benzyl bromide (0.27 g, 1.6 mmol) and NaHCO3 (0.67 g, 8.0 mmol). The reaction was then heated to 60° C. for 2 h, cooled to RT, and stirred for 12 h. The precipitate was filtered, washed with EtOAc and the filtrate concentrated in vacuo. The residue was partitioned between water and EtOAc, and extracted. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated in vacuo. Purification by normal phase silica gel column (EtOAc/heptane) provided (S)-dibenzyl 8-(2-amino-6-((R)-1-(4-bromo-2-(3-methyl-1H-pyrazol-1-yl)phenyl)-2,2,2-trifluoroethoxy)pyrimidin-4-yl)-2,8-diazaspiro[4.5]decane-2,3-dicarboxylate as the white solid.

1. temperaturecooled to RT
2. filtrationThe precipitate was filtered
3. washwashed with EtOAc
4. concentrationthe filtrate concentrated in vacuo
5. customThe residue was partitioned between water and EtOAc
6. extractionextracted
7. washThe combined organic layers were washed with brine
8. dry with materialdried over Na2SO4
9. filtrationfiltered
10. concentrationconcentrated in vacuo
11. customPurification by normal phase silica gel column (EtOAc/heptane)