反应详情

温度

70 °C

1.0 g (4.00 mmol) of methyl 3(E)-(3,4-diethoxyphenyl)acrylate is suspended in 30 ml of a 10% solution of potassium hydroxide in methanol. Thereafter, 2 ml of water are added and the mixture is heated to 70° C. for 3 hours. The reaction mixture is then cooled and is partitioned between diethyl ether and water, the organic phase is washed several times with saturated sodium chloride solution and the combined aqueous phases are adjusted to pH 4 with a 25% hydrochloric acid solution and are extracted several times with methylene chloride. The methylene chloride phases are combined, dried over magnesium sulfate, filtered and evaporated down. This gives 3(E)-(3,4-diethoxyphenyl)acrylic acid.

1. temperatureThe reaction mixture is then cooled
2. customis partitioned between diethyl ether and water
3. washthe organic phase is washed several times with saturated sodium chloride solution
4. extractionare extracted several times with methylene chloride
5. dry with materialdried over magnesium sulfate
6. filtrationfiltered
7. customevaporated down