Potassium Carbonate → 6-Chloro-2-(4-chloropyridine-2-carbonyl)-3-(2-hydroxyisobutyrylamino)indole

Participants

Reaction Steps

To a suspension of 3-(2-acetoxyisobutyrylamino)-6-chloro-2-(4-chloropyridine-2-carbonyl)indole (Example 360, 251.4 mg, 0.5789 mmol) in methanol (8 ml) and DMSO (20 ml) was added potassium carbonate (45.0 mg, 0.3259 mmol) in water (1 ml) at room tempetature. After stirring for 30 h, the mixture was diluted with diethyl ether (150 ml), and then washed with water (25 ml×3), brine (25 ml) and dried (MgSO4). Removal of solvent gave a crystalline residue, which was recrystallized from ethyl acetate to afford 103.9 mg (45.8%) of the title compound.

Provenance & Evidence