반응 #1176584

반응 방정식

2-methylbenzothiazole

ethyl p-toluenesulfonate

→

3-ethyl-2-methyl-benzothiazolium p-toluenesulfonate

용매

acetone

반응 조건

후처리

1. 1
   온도are heated
2. 2
   기타the temperature rising to about 200° C. due to the exothermic reaction
3. 3
   기타the product which has precipitated
4. 4
   여과is filtered off with suction
5. 5
   세척washed with acetone
6. 6
   기타dried in vacuo

실험 절차

300 g (2 mol) of 2-methylbenzothiazole and 440 g (2.2 mol) of ethyl p-toluenesulfonate (or a mixture of ethyl o- and p-toluenesulfonate) are heated with stirring to 150° C., the temperature rising to about 200° C. due to the exothermic reaction. After 10 minutes, the mixture is poured into two liters of acetone, and the product which has precipitated is filtered off with suction, washed with acetone and dried in vacuo. Yield 730 g (98%).

출처