反应详情

To a solution of (+/−) (3,5-Bis-trifluoromethyl-benzyl)-[1-(toluene-4-sulfonyl)-2,3,4,5-tetrahydro-1H-benzo[b]azepin-5-yl]-amine (149 mg, 0.27 mmol) and pyridine (0.33 ml, 4 mmol) in dichloromethane (1.5 ml) at room temperature is added acetic anhydride (0.38 ml, 4.1 mmol) via dropwise addition over 2 minutes. The mixture is stirred at room temperature for 20 hours. The mixture is treated with 1N aqueous NaOH (4 ml) and stirred for 10 minutes, then diluted with 1N HCl (15 ml) and dichloromethane (15 ml). The organic layer is washed with water, dried (Na2SO4), and concentrated to a solid. Purification by silica gel column chromatography (eluent, 35% ethyl acetate in hexanes) gives the title compound as a solid. Mass spectrum (ES+): 585 (M+H).

1. additionvia dropwise addition over 2 minutes
2. stirringstirred for 10 minutes
3. washThe organic layer is washed with water
4. dry with materialdried (Na2SO4)
5. concentrationconcentrated to a solid
6. customPurification by silica gel column chromatography (eluent, 35% ethyl acetate in hexanes)