反应详情

To a stirred solution of aniline 12 (1.0 g, 6.1 mmol) in EtOH:H2O (9:1) was added 2-propylpentyl 4-methylbenzenesulfonate (0.87 g, 3.08 mmol). The reaction mixture was heated under reflux for 4 days, concentrated under reduced pressure. The residue was diluted with water and extracted with EtOAc three times. Combined organic layers were dried over anhydrous sodium sulfate and concentrated under reduced pressure to dryness. Purification by flash chromatography (25% EtOAc—hexanes) gave 3-hydroxy-3-(3-(2-propylpentylamino)phenyl)propanenitrile as a colorless semi-solid. Yield (0.3 g, 18%); 1H NMR (400 MHz, CDCl3) δ 7.17 (t, J=7.6 Hz, 1H), 6.66 (d, J7.6 Hz, 1H), 6.62 (d, J=2.0 Hz, 1H), 6.57 (dd, J=2.0, 8.0 Hz, 1H), 4.95 (dt, J=3.2, 6.0 Hz, 1H), 3.72 (bs, 1H), 3.02 (d, J=6.0 Hz, 2H), 2.80 (d, J=6.8 Hz, 2H), 2.89 (d, J=3.2 Hz, 1H), 1.64-1.57 (m, 1H), 1.37-1.20 (m, 8H), 0.84 (t, J=6.8 Hz, 6H).

1. temperatureThe reaction mixture was heated
2. temperatureunder reflux for 4 days
3. concentrationconcentrated under reduced pressure
4. additionThe residue was diluted with water
5. extractionextracted with EtOAc three times
6. dry with materialCombined organic layers were dried over anhydrous sodium sulfate
7. concentrationconcentrated under reduced pressure to dryness
8. customPurification by flash chromatography (25% EtOAc—hexanes)