反应 #1687676

反应方程式

1,4-dioxane

ethylvinyl ether

p-toluenesulfonic acid

water

→

p-1-ethoxyethoxystyrene p-hydroxystyrene p-methylstyrene

反应条件

后处理

1. 1
   其他reaction
2. 2
   其他crystallized
3. 3
   其他Precipitated crystals
4. 4
   过滤were filtered out
5. 5
   洗涤washed with water
6. 6
   其他dried in vacuo

实验过程

To a solution of 15.0 g of poly(p-hydroxystyrene/p-methylstyrene) obtained according to (2) and 3.5 g of ethylvinyl ether in 150 ml of 1,4-dioxane was added a catalytic amount of pyridinium salt of p-toluenesulfonic acid to carry out reaction with stirring at room temperature for 24 hours. The reaction solution was poured into 5,000 ml of water and crystallized. Precipitated crystals were filtered out, washed with water and dried in vacuo to give 11.5 g of poly(p-1-ethoxyethoxystyrene/p-hydroxystyrene/p-methylstyrene) as white powder. The p-1-ethoxyethoxystyrene unit/p-hydroxystyrene unit/p-methylstyrene unit molar ratio in the polymer was ca. 35:60:5 based on

来源