反应详情

To 3-aminophenol (10.9 g, 100 mmol) in DMF (100 mL) cooled with an ice/H2O bath was added NaH (8.90 g, 222 mmol) in 4 portions. 2-(Dimethylamino)ethylchloride hydrochloride (15.8 g, 110 mmol) was then added in 3 portions and the reaction was stirred at rt overnight. The reaction was poured into H2O (600 mL) and extracted with EtOAc. The combined organic layer was washed with brine, dried (MgSO4) and concentrated. Purification by flash column chromatography (flash chromatography), treatment with HCl (50.0 mL, 4M in dioxane, 200 mmol) and concentration provided the title compound (14.0 g, 56.0 mmol, 56%). 1H NMR (400 MHz, DMSO-d6) δ ppm 2.80 (s, 6H), 3.46 (t, J=4.8 Hz, 2H), 4.30 (t, J=4.9 Hz, 2H), 6.58-6.66 (m, 3H), 7.18 (t, J=8.2 Hz, 1H), 8.55 (br.s., 2H), 10.70 (br.s., 1H).

1. extractionextracted with EtOAc
2. washThe combined organic layer was washed with brine
3. dry with materialdried (MgSO4)
4. concentrationconcentrated
5. customPurification by flash column chromatography (flash chromatography), treatment