反应详情

A mixture of the product from step (i) (2.7 g) in 48% aqueous hydrogen bromide (30 ml) was heated under reflux for 2 h. The solvent was evaporated, the residue washed with water and dried, yield 1.7 g.

1. temperaturewas heated
2. temperatureunder reflux for 2 h
3. customThe solvent was evaporated
4. washthe residue washed with water
5. customdried