反应详情

9.6 g (0.24 mol) of 60% sodium hydride and 150 ml of N,N-dimethylformamide were placed in a container equipped with a stirrer, a reflux condenser and a nitrogen-introducing tube, and the solution was then stirred under the feed of nitrogen. Afterward, 32 g (0.25 mol) of 2,5-dimethyl-5-hexene-3-ol was added dropwise thereto at 20°-30° C. over 1 hour, and the solution was then stirred at the same temperature for 3 hours to prepare a sodium alcoholate solution. Next, 34.6 g (0.2 mol) of 3-nitrophthalonitrile and 150 ml of N,N-dimethylformamide were placed in a container equipped with a stirrer, and the above-mentioned sodium alcoholate solution was then added dropwise at 0° C. or less over 5 hours. After completion of the addition, the temperature of the solution was raised up to a level of 20°-30° C., and the solution was then stirred for 2 hours to bring reaction to an end. The thus obtained reaction solution was poured into 3 l of water and then stirred for 30 minutes, and 500 ml of toluene were added. After stirring for 30 minutes, the solution was allowed to stand to separate a toluene layer. After toluene was distilled off under reduced pressure, recrystallization was carried out from 500 ml of n-hexane to obtain 43.7 g of 3-(2,5-dimethyl-5-hexene-3-oxy)phthalonitrile (yield =86.0%).

1. customequipped with a stirrer, a reflux condenser
2. additiona nitrogen-introducing tube
3. stirringthe solution was then stirred at the same temperature for 3 hours
4. customequipped with a stirrer
5. additionAfter completion of the addition
6. temperaturethe temperature of the solution was raised up to a level of 20°-30° C.
7. stirringthe solution was then stirred for 2 hours
8. customreaction to an end
9. customThe thus obtained reaction solution
10. stirringstirred for 30 minutes
11. stirringAfter stirring for 30 minutes
12. customto separate a toluene layer
13. distillationAfter toluene was distilled off under reduced pressure, recrystallization