反应详情

1-[3-(Dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (EDC) (962 mg, 5.03 mmol) was added in one portion to a solution of 9-amino-5-ethyl-5H-phenanthridin-6-one 1A (1.0 g, 4.2 mmol), 1-hydroxybenzotriazole (850 mg, 6.3 mmol), and triethylamine (0.64 ml, 4.6 mmol) in dichloromethane (20 ml). The resultant solution was stirred at 23° C. for 16 hours and diluted with ethyl acetate (50 ml). The reaction mixture was washed with water (25 ml) and saturated aqueous ammonium chloride (25 ml) and dried over anhydrous magnesium sulfate and concentrated. The solid residue was triturated with methanol to provide N-(5-ethyl-6-oxo-5,6-dihydro-phenanthridin-9-yl)-2-pyridin-4-yl-acetamide 5A (509 mg, 34%).

1. washThe reaction mixture was washed with water (25 ml) and saturated aqueous ammonium chloride (25 ml)
2. dry with materialdried over anhydrous magnesium sulfate
3. concentrationconcentrated
4. customThe solid residue was triturated with methanol