反应详情

温度

40 °C

To a solution of tert-butyl(1-(4-(2-oxo-7-phenyl-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazin-6-yl)phenyl)cyclobutyl)carbamate (19 mg, 0.04 mmol) in dry DMF (1 mL) was added sodium hydride (8 mg, 0.18 mmol) at 0° C. under nitrogen. After 1 h at 0° C., 2-chloro-N,N-dimethylethanamine.hydrochloride (18 mg, 0.12 mmol) was added and the resulting mixture was stirred for an additional 5 h at 40° C. Water was added and the mixture was extracted with ethyl acetate (3×). The combined organic phases were dried over Na2SO4, filtered and concentrated to dryness under reduced pressure. The resulting residue was purified by silica gel chromatography (gradient 0 to 3% MeOH in dichloromethane) to give the title compound (7 mg, 32%). 1H NMR (500 MHz, CDCl3): 7.38 (1H, s), 7.31-7.24 (7H,m), 7.20-7.18 (2H,m), 5.01 (1H, br s), 4.88 (2H, s), 4.08 (2H,t), 2.60 (2H, t), 2.55-2.25 (4H, m), 2.33 (6H, s), 2.09-2.01 (1H, m), 1.85-1.76 (1H, m), 1.44-1.15 (9H, br).

1. extractionthe mixture was extracted with ethyl acetate (3×)
2. dry with materialThe combined organic phases were dried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated to dryness under reduced pressure
5. customThe resulting residue was purified by silica gel chromatography (gradient 0 to 3% MeOH in dichloromethane)