反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
A solution of 1.25 g (0.002 mole) of [4-acetyl-3-[2-[2-[2-[2-(4-acetyl-3-hydroxy-2-propylphenoxy)ethoxy]ethoxy]ethoxy]ethoxy]-2-propylphenoxy]acetic acid ethyl ester in 30 ml of methanol and 10 ml (0.01 mole) of 1.0N sodium hydroxide was stirred at reflux for 5 hours. Most of the solvent was removed in vacuo and the pH of the residue was adjusted to 2.0 with 6N hydrochloric acid. The product was extracted with methyl acetate and the dried (magnesium sulfate) extract was concentrated in vacuo to an oil which was purified by chromatography on 75 g of silica gel. Elution with toluene-ethyl acetate-acetic acid (65:25:10) gave 0.79 g (66% yield) of [4-acetyl-3-[2-[2-[2-[2-(4-acetyl-3-hydroxy-2-propylphenoxy)ethoxy]ethoxy]ethoxy]ethoxy]-2-propylphenoxy]acetic acid as an oil.
WORKUP
后处理
- temperatureat reflux for 5 hours
- customMost of the solvent was removed in vacuo
- extractionThe product was extracted with methyl acetate
- dry with materialthe dried (magnesium sulfate)
- extractionextract
- concentrationwas concentrated in vacuo to an oil which
- customwas purified by chromatography on 75 g of silica gel
- washElution with toluene-ethyl acetate-acetic acid (65:25:10)