反应详情

温度

60 °C

To a mixture of 5-bromo-2-isopropyl-4-methoxy-phenol from step 4 (0.831 g, 3.4 mmol) and K2CO3 (0.562 g, 4.1 mmol) in 17 mL dimethyl formamide (DMF) was added iodoacetonitrile (0.594 g, 3.6 mmol). The mixture was warmed to 60° C. for 30 minutes and then allowed to cool to room temperature. After cooling to room temperature the mixture was taken up in 50 mL of H2O and extracted with 1:1 toluene/ethyl acetate, washed with H2O and then with brine. The combined organic layers were dried over Na2SO4, filtered and concentrated in vacuo to give a crude solid. Purification via flash chromatography (1:1 hexane/CH2Cl2) afforded (5-bromo-2-isopropyl-4-methoxy-phenoxy)-acetonitrile (0.611 g, 63%) as a while solid.

1. temperatureto cool to room temperature
2. temperatureAfter cooling to room temperature the mixture
3. extractionextracted with 1:1 toluene/ethyl acetate
4. washwashed with H2O
5. dry with materialThe combined organic layers were dried over Na2SO4
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customto give a crude solid
9. customPurification via flash chromatography (1:1 hexane/CH2Cl2)