反应详情

温度

-70 °C

MeLi (0.00258 mol) was added dropwise at −70° C. to a solution of (±)-4-[[4-(3-chlorophenyl)-1,2-dihydro-1-methyl-2-oxo-6-quinolinyl]hydroxy(1-methyl-1H-imidazol-5yl)methyl]benzaldehyde (described in Example B6) (0.001 mol) in THF (5 ml) under N2 flow. The mixture was stirred at −70° C. for 2 hours. H2O was added. The mixture was extracted with EtOAc. The organic layer was separated, dried (MgSO4), filtered, and the solvent was evaporated. The residue (0.9 g) was purified by column chromatography over silica gel (eluent: CH2Cl2/CH3OH/NH4OH; 95/5/0.2; 15–40 μm). The pure fractions were collected and the solvent was evaporated, yielding 0.3 g (58%) of (±)-4-(3-chlorophenyl)-6-[hydroxy[4-(1-hydroxyethyl)phenyl](1-methyl-1H-imidazol-5-yl)methyl]-1-methyl-2(1H)-quinolinone, mp. 181° C.

1. extractionThe mixture was extracted with EtOAc
2. customThe organic layer was separated
3. dry with materialdried (MgSO4)
4. filtrationfiltered
5. customthe solvent was evaporated
6. customThe residue (0.9 g) was purified by column chromatography over silica gel (eluent: CH2Cl2/CH3OH/NH4OH; 95/5/0.2; 15–40 μm)
7. customThe pure fractions were collected
8. customthe solvent was evaporated