反应详情

5-Formylsalicylic acid (5.0 g, 30 mmol), n-butyl iodide (3.4 mL, 30 mmol), and potassium carbonate (4.2 g, 30 mmol) were stirred in DMF (40 mL) for 27 h at room temperature. After several EtOAc/H2O extractions, the mixture was dried (MgSO4), and concentrated. Chromatography on silica gel, eluting with 5% to 30% EtOAc in hexanes, followed by solvent removal gave a white solid (2.0 g). HR-MS: Calc'd 223.0970, Found 223.0968. Anal. Calc'd for C12H14O4 : C, 64.84; H, 6.36; Found: C, 64.82; H, 6.30.

1. extractionAfter several EtOAc/H2O extractions
2. dry with materialthe mixture was dried (MgSO4)
3. concentrationconcentrated
4. washChromatography on silica gel, eluting with 5% to 30% EtOAc in hexanes
5. customfollowed by solvent removal