反应详情

16.6 g of methyl 4-methylbenzothiazole-5-carboxylate (0.08 mol) were dissolved in 280 ml of 5% strength aqueous potassium hydroxide solution and heated at reflux for 2.5 h. After cooling, the mixture was acidified using phosphoric acid. The product was filtered off and subsequently dried.

1. temperatureheated
2. temperatureat reflux for 2.5 h
3. temperatureAfter cooling
4. filtrationThe product was filtered off
5. customsubsequently dried