反应详情

温度

50 °C

Sodium hydride (2.7 g, 67.5 mmol) was suspended in NMP (75 ml) and benzyl alcohol (7.3 g, 67.6 mmol) was added over 10 minutes. When the addition was complete the solution was stirred at 50° C. for 30 minutes. 4-Amino-3-chlorobenzonitrile (10.3 g, 67.5 mmol), (Synthesis 1985, 669), was added and the mixture was heated at 120-130° C. for 4 hours. After cooling to ambient temperature the mixture was partitioned between water and ether. The ether extracts were washed with brine, dried (MgSO4), the insoluble materials were removed by filtration and the volatiles were removed by evaporation. The crude product was purified by flash chromatography eluting with ether/isohexanes (1/1 increasing to 1/0). The purified product was recrystallized from ethyl acetate/isohexanes to give 4-amino-3-benzyloxybenzonitrile (4.7 g, 31%).

1. additionWhen the addition
2. temperaturethe mixture was heated at 120-130° C. for 4 hours
3. temperatureAfter cooling to ambient temperature the mixture
4. customwas partitioned between water and ether
5. washThe ether extracts were washed with brine
6. dry with materialdried (MgSO4)
7. customthe insoluble materials were removed by filtration
8. customthe volatiles were removed by evaporation
9. customThe crude product was purified by flash chromatography
10. washeluting with ether/isohexanes (1/1 increasing to 1/0)
11. customThe purified product was recrystallized from ethyl acetate/isohexanes