反应详情

温度

60 °C

0.055 mol of the compound obtained in Step D is introduced into a 500 ml round-bottomed flask together with 100 g of polyphosphoric acid. The reaction mixture is heated at 60° C. for 4 hours. The mixture is then cooled and poured into water; the precipitate formed is then dried and recrystallised.

1. temperatureThe mixture is then cooled
2. customthe precipitate formed
3. customis then dried
4. customrecrystallised