反应详情

温度

0 °C

To a stirred solution of 4-(bromomethyl)-1-naphthonitrile (8 g, 33 mmol) in toluene (100 mL) at 0° C. was added dropwise DIBAL-H (1.0 M solution in toluene; 43 mL), and the reaction mixture was stirred at 0° C. for 1 h. 3 N HCl in water (50 mL) was added to the mixture until it became a white slurry and then additional 1 N HCl (20 mL) was added. The organic layer was collected and the aqueous layer was extracted with EtOAc (3 x100 mL). The combined organic layer was dried over Na2SO4 and concentrated under reduced pressure. Purification by flash column chromatography (SiO2, 100-200 mesh; 5% EtOAc in petroleum ether) afforded the title compound as a white solid (7 g, 88%): mp 115-116° C.; 1H NMR (400 MHz, CDCl3) δ 10.41 (s, 1H), 9.35 (m, 1H), 8.22 (m, 1H), 7.90 (d, J=8.0 Hz, 1H), 7.75 (m, 3H), 4.95 (s, 2H); ESIMS m/z 248.88 ([M+H]+).

1. customThe organic layer was collected
2. extractionthe aqueous layer was extracted with EtOAc (3 x100 mL)
3. dry with materialThe combined organic layer was dried over Na2SO4
4. concentrationconcentrated under reduced pressure
5. customPurification by flash column chromatography (SiO2, 100-200 mesh; 5% EtOAc in petroleum ether)