HRID1981990

反应详情

EQUATION

反应方程式

HRID 1981990 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

A suspension of 2.3 g of [[8-acetyl-7-[2-[2-(4-acetyl-3-hydroxy-2-propylphenoxy)ethoxy]ethoxy]-2-naphthalenyl]oxy]acetic acid methyl ester and 43 ml of 1N sodium hydroxide in 86 ml of methanol was stirred at reflux for 1 hour. The methanol was removed and aqueous solution was acidified to pH 3. The precipitate was extracted with methylene chloride, washed with water, dried (magnesium sulfate) and concentrated in vacuo to give an oil. The oil was triturated with ether to yield 1.9 g, mp 121°-122° C. (84%) of [[8-acetyl-7-[2-[2-(4-acetyl-3-hydroxy-2-propylphenoxy)ethoxy]ethoxy]-2-naphthalenyl]oxy]acetic acid.

WORKUP

后处理

  1. temperatureat reflux for 1 hour
  2. customThe methanol was removed
  3. extractionThe precipitate was extracted with methylene chloride
  4. washwashed with water
  5. dry with materialdried (magnesium sulfate)
  6. concentrationconcentrated in vacuo
  7. customto give an oil
  8. customThe oil was triturated with ether