反应详情

温度

80 °C

18.0 g (93.6 mmol) of the resulting compound (11) was dissolved in 600 ml of ethanol. The solution was poured into a solution of 12.0 g (300 mmol) of sodium hydroxide dissolved in 80 ml of water and 100 ml of methanol. The whole was refluxed at 80° C. for 2 hours. After removal of the solvent by distillation, the resulting white solid was dissolved in water and the solution was rendered acidic by adding hydrochloric acid, whereby white precipitate formed. The precipitate was extracted with methylene chloride. After removal of the solvent by distillation, the residue was purified by silica gel column chromatography to obtain 4.7 g of p-allyloxybenzoic acid (12) (yield: 88.1%).

1. customAfter removal of the solvent
2. distillationby distillation
3. dissolutionthe resulting white solid was dissolved in water
4. additionby adding hydrochloric acid, whereby white precipitate
5. customformed
6. extractionThe precipitate was extracted with methylene chloride
7. customAfter removal of the solvent
8. distillationby distillation
9. customthe residue was purified by silica gel column chromatography