HRID378500
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 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
- temperaturethe whole is heated
- temperatureunder reflux for 1.5 hours
- temperaturecooling
- filtrationThe precipitated, colourless crude product is filtered off
- washwashed neutral
- customrecrystallized from ethanol and methanol/acetone