反应详情

A mixture of 4-(4-fluorophenyl)-2-isopropyl-3,5-dioxo-2,3,4,5-tetrahydro-1,2,4-triazine-6-carboxylic acid (500 mg, 2 mmol), 4-(6,7-dimethoxyquinolin-4-yloxy)-3-fluorophenylamine (535 mg, 1.70 mmol), N,N,N′,N′-tetramethyl-O-(7-azabenzotriazol-1-yl)uronium hexafluorophosphate (639 mg, 1.68 mmol) and N,N-diisopropylethylamine (279 uL, 1.60 mmol) in N,N-dimethylformamide (8 mL) was stirred at rt for 3 h. The solvent was removed and the residue dissolved in EtOAc and washed with saturated NaHCO3 solution water and brine. After drying over magnesium sulfate, solvent was evaporated and the product was purified by ISCO silica gel chromatography (hexane: EtOAc 1:4) to give 835 mg (83%), which triturated with ether and dried. mp=225-226° C.; LCMS m/z=590 (M+1); 1H NMR DMSO) δ: 10.87 (s, 1H), 8.49 (d, 1H, J=5.2 Hz), 7.97 (dd, 1H, J=12.6, 2.2 Hz), 7.59-7.36 (m, 8H), 6.50 (d, 1H, J=4.9 Hz), 4.90 (m, 1H), 3.95 (s, 6H), 3.32 (s, 3H), 1.38 (d, 6H, J=6.6 Hz).

1. customThe solvent was removed
2. dissolutionthe residue dissolved in EtOAc
3. washwashed with saturated NaHCO3 solution water and brine
4. dry with materialAfter drying over magnesium sulfate, solvent
5. customwas evaporated
6. customthe product was purified by ISCO silica gel chromatography (hexane: EtOAc 1:4)
7. customto give 835 mg (83%), which
8. customtriturated with ether
9. customdried