反应详情

5.6 g (20 mmol) of 1-acetyl-3-(1-hydroxy-1-phenyl-methylidene)-2-indolinone are suspended in 45 ml of toluene and while cooling with ice combined with 4.2 g (20 mmol) of phosphorus pentachloride and then stirred for 18 hours at ambient temperature. The precipitate formed after cooling with ice is suction filtered and dried.

1. temperaturewhile cooling with ice
2. customThe precipitate formed
3. temperatureafter cooling with ice
4. filtrationfiltered
5. customdried