Реакция #482421

Уравнение реакции

di-t-butyl dicarbonate

p-hydroxystyrene

water

hydrochloric acid

→

p-hydroxystyrene p-(t-butyloxycarbonyloxy)-styrene

Растворители

pyridine

Условия реакции

Обработка

1. 1
   workup.ADDITIONwas added to the solution
2. 2
   Другоеthe reaction at room temperature for 3 hours
3. 3
   Другоеthe reaction liquid
4. 4
   ДругоеThe powder precipitated
5. 5
   Фильтрацияwas collected by filtration
6. 6
   Промывкаwashed with water
7. 7
   Другоеdried

Методика

In 40 ml of pyridine was dissolved poly p-hydroxystyrene (VP-8000, manufactured by Nippon Soda Co., Ltd., weight average molecular weight 1000), and 1.28 g of di-t-butyl dicarbonate was added to the solution with stirring at room temperature. After carrying out the reaction at room temperature for 3 hours, the reaction liquid was added to a solution of 1 liter of ion-exchanged water and 20 g of concentrated hydrochloric acid. The powder precipitated was collected by filtration, washed with water, and dried to obtain a p-hydroxystyrene/p-(t-butyloxycarbonyloxy)-styrene copolymer (60/40).

Источник