反应 #93231

反应方程式

Methacrylyl chloride

triethylamine

2-(2'-hydroxy-5'-hydroxypropyl-3'-tert-butylphenyl)-5-chloro-2H-benzotriazole

→

2-(2'-Hydroxy-5'-methyacrylyloxypropyl-3'-tert-butylphenyl)-5-chloro-2H-benzotriazole

溶剂

methylene chloride

methylene chloride

反应条件

后处理

1. 1
   洗涤washed with 1N hydrochloric acid and water
2. 2
   干燥The methylene chloride solution of the product was dried with sodium sulfate
3. 3
   其他evaporated
4. 4
   其他A polymerization grade sample was obtained by recrystallization from methanol

实验过程

Methacrylyl chloride (5.9 ml) and triethylamine (8.5 ml) were added dropwise at -5° C. to a solution of 2-(2'-hydroxy-5'-hydroxypropyl-3'-tert-butylphenyl)-5-chloro-2H-benzotriazole (20 g) in 250 ml of methylene chloride. The reaction mixture was stirred at 0° C. overnight and then washed with 1N hydrochloric acid and water. The methylene chloride solution of the product was dried with sodium sulfate, passed through alumina column and evaporated. The crude yield of the product was 22 g (90%). A polymerization grade sample was obtained by recrystallization from methanol--methylene chloride mixture, m.p. 74.5°-76.5° C.

来源