反应详情

13.3 g (0.1 mol) of 2-indolinone and 30 ml of acetic anhydride are stirred for 3 hours at 170° C. After cooling, 150 ml of ice water are added, the crystalline product is suction filtered, washed with water and dried.

1. temperatureAfter cooling
2. filtrationfiltered
3. washwashed with water
4. customdried