反应详情

温度

2.5 °C

To a suspension of 5-octylbarbituric acid (20 g) in 120 ml of water, cooled at 0-5° C., are added 12 ml of 48% hydrobromic acid and successively are dropped 4.72 ml of brornine. After 2 hours under stirring, the white solid which separated is recovered by filtration, washed with water and partitioned between 200 ml of diethyl ether and 100 ml of water.

1. customthe white solid which separated
2. filtrationis recovered by filtration
3. washwashed with water
4. custompartitioned between 200 ml of diethyl ether and 100 ml of water