反应详情

Into a reaction vessel equipped with a stirrer, condenser and thermometer was placed 0.2 mole of 5-hydroxyisophthalic acid. Thereto were added 0.6 mole of allyl alcohol, 300 ml of toluene, 1.3 g of sulfuric acid and 0.2 g of p-methoxyphenol and the mixture was refluxed with heating. A mixture of toluene and water was distilled off and cooled with a condenser, and toluene was separated from water and returned contineously to the reaction vessel. The mixture was heated for 8 hours and then allowed to cool. At this point, total of distilled water was 7 ml. After the reaction mixture was washed with a saturated aqueous solution of sodium chloride until the aqueous layer did not indicate acidic, toluene was distilled at a reduced pressure. The resulting concentrate was distilled at a reduced pressure to obtain 27 g (yield 52%) of diallyl 5-hydroxyisophthalate. b.p. 202°~205° C./5 mm Hg.

1. customInto a reaction vessel equipped with a stirrer, condenser
2. temperaturethe mixture was refluxed
3. temperaturewith heating
4. distillationwas distilled off
5. temperaturecooled with a condenser
6. customtoluene was separated from water
7. temperatureThe mixture was heated for 8 hours
8. temperatureto cool
9. washAfter the reaction mixture was washed with a saturated aqueous solution of sodium chloride until the aqueous layer
10. distillationtoluene was distilled at a reduced pressure
11. concentrationThe resulting concentrate
12. distillationwas distilled at a reduced pressure