反应详情

温度

65 °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) (250 mg, 0.32 mmol) in THF (2 mL) was added sequentially PdCl2(dppf)CH2Cl2 (8 mg, 0.01 mmol), NaOEt (66 mg, 1 mmol) and the prepared 9-BBN/butene solution from Step 1. The reaction was heated to 65° C. for 2 h, then cooled to RT. The reaction was extracted with EtOAc, brine and dried over Na2SO4 and concentrated in vacuo. The product was purified by column chromatography using an Isco Gold reversed phase silica cartridge (100% CH2Cl2 to 90:9:1 CH2Cl2:MeOH:conc. NH4OH) to provide (S)-2-benzyl 3-ethyl 8-(2-amino-6-((R)-2,2,2-trifluoro-1-(4-(4-methoxy-4-oxobutyl)-2-(3-methyl-1H-pyrazol-1-yl)phenyl)ethoxy)pyrimidin-4-yl)-2,8-diazaspiro[4.5]decane-2,3-dicarboxylate as an off-white solid.

1. temperaturecooled to RT
2. extractionThe reaction was extracted with EtOAc, brine
3. dry with materialdried over Na2SO4
4. concentrationconcentrated in vacuo
5. customThe product was purified by column chromatography