反应详情

To a solution of 6-(4-amino-2-methylphenyl)-4-(3-methyl-1H-indazol-5-yl)pyrimidin-2(1H)-one (25 mg, 0.06 mmol) in 6 mL dichloroethane were added tert-butyl 4-formylpiperidine-1-carboxylate (76.6 g, 0.36 mmol), NaBH(OAc)3 (76 mg, 0.36 mmol), and 500 μL acetic acid. The reaction mixture was stirred at room temperature for 2 hours and diluted with saturated aqueous NaHCO3 (15 mL) and then extracted with ethyl acetate (3×50 mL). The combined organic phases were washed with brine, dried over Na2SO4 and concentrated in vacuo to afford tert-butyl 4-((3-methyl-4-(6-(3-methyl-1H-indazol-5-yl)-2-oxo-2,3-dihydropyrimidin-4-yl)phenylamino)methyl)piperidine-1-carboxylate, which was submitted to the next step without further purification.

1. extractionextracted with ethyl acetate (3×50 mL)
2. washThe combined organic phases were washed with brine
3. dry with materialdried over Na2SO4
4. concentrationconcentrated in vacuo