反应详情

To a solution of compound 8.3 methyl 1-(4-(3-amino-6-bromoquinolin-4-ylamino)-2-(trifluoromethyl)phenyl)piperidine-4-carboxylate (60 mg, 0.115 mmol, 1 equiv.) in anhydrous DMF (3 mL) at 0° C. was added sodium hydride (60%, 5.0 mg, 0.126 mmol, 1.1 equiv.). After the mixture solution was stirred for 15minutes, tent-Butyl bromoacetate (19 mL, 0.126 mmol, 1.1 equiv.) was added. The resulting mixture was stirred overnight at room temperature under argon. Upon quenching with water, the mixture was concentrated under vacuum, diluted with EtOAc (20 mL), and washed with water (20 mL) and brine (20 mL). The organic phase was dried over Na2SO4. After removal of solvent under vacuum, the resulting residue was purified via flash chromatography (CH2Cl2:MeOH=35:1) to afford the desired product 8.4 methyl 1-(4-(9-bromo-3-oxo-3,4-dihydropyrazino[2,3-c]quinolin-1(2H)-yl)-2-(trifluoromethyl)phenyl)piperidine-4-carboxylate (61 mg; 94%). LC-MS (M+H): 563.15

1. stirringThe resulting mixture was stirred overnight at room temperature under argon
2. customUpon quenching with water
3. concentrationthe mixture was concentrated under vacuum
4. additiondiluted with EtOAc (20 mL)
5. washwashed with water (20 mL) and brine (20 mL)
6. dry with materialThe organic phase was dried over Na2SO4
7. customAfter removal of solvent under vacuum
8. customthe resulting residue was purified via flash chromatography (CH2Cl2:MeOH=35:1)