反应详情

Lithium hydroxide hydrate (7.4 g; 177 mmole) dissolved in water (150 ml) was added to a solution of 3-(4-benzyloxyphenyl)-2-ethoxypropanoic acid ethyl ester (23.25 g; 70.8 mmole) in dioxane (150 ml). After stirring at room temperature over night dioxane was evaporated in vacuo, water was added and the mixture was extracted with ethyl acetate. The water phase was acidified with hydrochloric acid (1 N) and extracted with ethyl acetate. The organic phase was washed with water and brine, dried and the solvent was evaporated in vacuo to give 21.1 g (yield 99.2%) of 3-(4-benzyloxyphenyl)-2-ethoxypropanoic acid.

1. customwas evaporated in vacuo, water
2. additionwas added
3. extractionthe mixture was extracted with ethyl acetate
4. extractionextracted with ethyl acetate
5. washThe organic phase was washed with water and brine
6. customdried
7. customthe solvent was evaporated in vacuo