反应详情

温度

90 °C

Methyl 4-hydroxy cinnamate (40 g, 225 mmol) was dissolved in 300 ml of NMP. 6-Chlorohexanol (269 mmol, 36.8 g), anhydrous potassium carbonate (37.2 g, 269 mmol) and a catalytic amount of potassium iodide were added. The batch was stirred at 90° C. for 32 hours. Water was added to the cooled solution, which was subsequently extracted with 3×200 mls of ethyl acetate. The combined organics were washed with 10% KOH (2×100 mls), brine solution and then dried over magnesium sulfate. The concentrated product was then recrystallized from a 1:1 mixture of ethyl acetate/hexane to give 45 g (72% yield) of an off-white solid.

1. extractionwas subsequently extracted with 3×200 mls of ethyl acetate
2. washThe combined organics were washed with 10% KOH (2×100 mls), brine solution
3. dry with materialdried over magnesium sulfate
4. customThe concentrated product was then recrystallized from a 1:1 mixture of ethyl acetate/hexane