تفاعل #1687676

معادلة التفاعل

1,4-dioxane

ethylvinyl ether

p-toluenesulfonic acid

water

→

p-1-ethoxyethoxystyrene p-hydroxystyrene p-methylstyrene

ظروف التفاعل

المعالجة

1. 1
   أخرىreaction
2. 2
   أخرىcrystallized
3. 3
   أخرىPrecipitated crystals
4. 4
   ترشيحwere filtered out
5. 5
   غسيلwashed with water
6. 6
   أخرىdried in vacuo

الإجراء التجريبي

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

المصدر