HRID2231474

反应详情

EQUATION

反应方程式

HRID 2231474 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

A solution of 2.35 g (0.004 mole) of [4-acetyl-3-[2-[2-[2-(4-acetyl-3-hydroxy-2-propylphenoxy)ethoxy]ethoxy]ethoxy]-2-propylphenoxy]acetic acid ethyl ester in 50 ml of methanol and 20 ml (0.02 mole) of 1.0N sodium hydroxide was stirred at reflux for 90 minutes. Most of the solvent was removed in vacuo and the pH of the residue was adjusted to 2.0 with 6N HCl. The gummy product was extracted with methylene chloride. The dried (magnesium sulfate) extract was concentrated in vacuo and the residue was crystallized from methylene chloride-hexane to give 2.06 g (92% yield) of [4-acetyl-3-[2-[2-[2-(4-acetyl-3-hydroxy-2-propylphenoxy)ethoxy]ethoxy]ethoxy]-2-propylphenoxy]acetic acid, mp 74°-77°.

WORKUP

后处理

  1. temperatureat reflux for 90 minutes
  2. customMost of the solvent was removed in vacuo
  3. extractionThe gummy product was extracted with methylene chloride
  4. dry with materialThe dried (magnesium sulfate)
  5. extractionextract
  6. concentrationwas concentrated in vacuo
  7. customthe residue was crystallized from methylene chloride-hexane