反应详情

The compound (330 mg) obtained in Example 24-1 was dissolved in chloroform and then added with chlorosulfuric acid (manufactured by Kishida Chemical Co., Ltd.) (0.177 ml) under ice-cooling. The solution was stirred at room temperature for 2 days, and then concentrated and dried. The resultant was gradually added with phosphorus pentachloride (300 mg) and then heated to 80° C., followed by stirring for 4 hours.

1. temperaturecooling
2. concentrationconcentrated
3. customdried
4. additionThe resultant was gradually added with phosphorus pentachloride (300 mg)
5. temperatureheated to 80° C.
6. stirringby stirring for 4 hours