反应详情

温度

90 °C

Methyl 4-hydroxy cinnamate (40 g, 225 mmol) was dissolved in 1-methyl-2-pyrrolidinone (NMP, 300 mL). 6-Chlorohexanol (269 mmol, 36.8 g), anhydrous K2CO3 (37.2 g, 269 mmol) and catalytic amount of KI were added. The batch was stirred at 90° C. for 32 hours. Water was added to the cooled solution, which was subsequently extracted with ethyl acetate (EtOAc, 3×200 mL). The combined organics were washed with 10% KOH (2×100 mL), brine solution and then dried over MgSO4. The concentrated product was then recrystallized from a 1:1 mixture of EtOAc/hexanes to give 45 g (72% yield) of an off-white solid.

1. extractionwas subsequently extracted with ethyl acetate (EtOAc, 3×200 mL)
2. washThe combined organics were washed with 10% KOH (2×100 mL), brine solution
3. dry with materialdried over MgSO4
4. customThe concentrated product was then recrystallized from a 1:1 mixture of EtOAc/hexanes