反应详情

温度

0 °C

100.26 g (0.35 mol) of methyl 16-hydroxyhexadecanoate, 0.60 g (3.5 mmol) of p-toluenesulfonic acid and 350 ml of dichloromethane were introduced into a 1-l flask equipped with a stirrer and a dropping funnel. 32.39 g (0.385 mol) of dihydropyran was added dropwise thereto while stirring at 0° C. After the completion of the addition, the mixture was stirred at room temperature for an hour to thereby complete the reaction. Next, the reaction mixture was neutralized by adding 0.59 g (7 mmol) of NaHCO3. After filtering and removing solvent under reduced pressure; a crude product of methyl 16-(2-tetrahydropyranyloxy)hexadecanoate was obtained.

1. customequipped with a stirrer and a dropping funnel
2. additionAfter the completion of the addition
3. stirringthe mixture was stirred at room temperature for an hour
4. customthe reaction
5. filtrationAfter filtering
6. customremoving solvent under reduced pressure