HRID2164954

反应详情

EQUATION

反应方程式

HRID 2164954 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

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

  1. temperatureat reflux for 5 hours
  2. customMost of the solvent was removed in vacuo
  3. extractionThe product was extracted with methyl acetate
  4. dry with materialthe dried (magnesium sulfate)
  5. extractionextract
  6. concentrationwas concentrated in vacuo to an oil which
  7. customwas purified by chromatography on 75 g of silica gel
  8. washElution with toluene-ethyl acetate-acetic acid (65:25:10)