Pyridine → HCID 18367825, compound

Participants

Reaction Steps

To a solution of 2-(2-amino-5-chlorobenzoyl)-6-chloro-3-(propionylamino)indole (Example 389, 217 mg, 0.576 mmol) and pyridine (0.12 ml, 1.50 mmol) in dichloromethane (10 ml) was added acetyl chloride (53 μl, 0.749 mmol) at 0° C. After stirring at room temperature for 1 h, the mixture was concentrated and the residue was diluted with ethyl acetate (100 ml). The solution was washed with 2N aqueous HCl (30 ml×2), saturated aqueous sodium bicarbonate (30 ml), and dried (MgSO4). Removal of solvent gave a crystalline residue. Recrystallization from ethyl acetate gave 163 mg (68%) of the title compound. m.p.: 264-266° C. IR (KBr) ν: 3260, 1676, 1655, 1578, 1547, 1508, 1313, 1234, 1205, 1006, 918, 841 cm−1

Provenance & Evidence