反应详情

Here, 8-methoxy-1,3-dihydro-2H-benzazepin-2-one (melting point: 190°-191° C.) (56.8 g, 0.3 mol), dissolved in glacial acetic acid (600 ml), is hydrogenated for 12 hours in the presence of 10% palladium/charcoal (5 g) at 80° C. and at 5 bar. The catalyst is removed by suction filtering and the acetic acid is distilled off in vacuo. The residue is mixed with water, neutralized with potassium carbonate, the precipitate obtained is suction filtered, washed with water and dried.

1. customThe catalyst is removed by suction
2. filtrationfiltering
3. distillationthe acetic acid is distilled off in vacuo
4. additionThe residue is mixed with water
5. customthe precipitate obtained
6. filtrationfiltered
7. washwashed with water
8. customdried