反应详情

To a solution of 2,3,4,5-tetrahydro-1H-1-benzazepine (0.80 g, 5.44 mmol) in dichloromethane (40 ml) were added 4-cyano-3-methylbenzoic acid from example C (0.96 g, 5.95 mmol), triethylamine (0.76 g, 5.44 mmol), 4-(dimethylamino)pyridine (0.66 g, 5.44 mmol) and WSCDI (2.17 g, 10.88 mmol). The mixture was stirred at reflux for 18 h, cooled and evaporated in vacuo. The residue was partitioned between EtOAc and 1M KHSO4. The organic layer was washed with saturated sodium bicarbonate solution and brine, dried over MgSO4, and concentrated in vacuo. The residue was purified by flash chromatography on silica (eluant EtOAc:pet. ether 30:70); yield 1.10 g (70%).

1. temperatureat reflux for 18 h
2. temperaturecooled
3. customevaporated in vacuo
4. customThe residue was partitioned between EtOAc and 1M KHSO4
5. washThe organic layer was washed with saturated sodium bicarbonate solution and brine
6. dry with materialdried over MgSO4
7. concentrationconcentrated in vacuo
8. customThe residue was purified by flash chromatography on silica (eluant EtOAc:pet. ether 30:70)