反应详情

12 grams (0.09 mol) of aluminum chloride are introduced into a ground-necked flask. 3.1 cm3 (0.04 mol) of dimethylformamide are added dropwise with stirring. After cooling, two grams (0.01 mol) of benzoselenazolinone are added and the mixture is homogenized. It is heated to 70°-80° C. on an oil bath with stirring, and 0.01 to 0.012 mol of acetyl chloride is then added. heating is maintained at a temperature of 80°-90° C. for a time T of approximately 4 h 30 min. The mixture is hydrolyzed on crushed ice. The product is drained, dried, and washed with boiling cyclohexane and recrystallized in toluene.

1. temperatureAfter cooling
2. stirringthe mixture is homogenized
3. temperatureIt is heated to 70°-80° C. on an oil bath
4. stirringwith stirring
5. temperatureheating
6. temperatureis maintained at a temperature of 80°-90° C. for a time T of approximately 4 h 30 min
7. customon crushed ice
8. customdried
9. washwashed with boiling cyclohexane
10. customrecrystallized in toluene