HRID378500

反应详情

EQUATION

反应方程式

HRID 378500 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

A solution of 20.0 g (303 mmol) 85% aqueous KOH in 200 ml water is added to 38.0 g (58.4 mmol) diethyl-2,5-bis-(10-acetoxydecoxy)terephthalate in 200 ml ethanol and the whole is heated under reflux for 1.5 hours. 28.0 ml conc. HCl are then added dropwise with ice-cooling and stirring until the solution shows an acidic pH. The precipitated, colourless crude product is filtered off, washed neutral and recrystallized from ethanol and methanol/acetone.

WORKUP

后处理

  1. temperaturethe whole is heated
  2. temperatureunder reflux for 1.5 hours
  3. temperaturecooling
  4. filtrationThe precipitated, colourless crude product is filtered off
  5. washwashed neutral
  6. customrecrystallized from ethanol and methanol/acetone