Potassium Carbonate → HCID 10316915, compound

Participants

Reaction Steps

A solution of 2-(methylthio)-N-phenyl-1H-indole-3-carboxamide [XXV: R8 =H] (1.8 g, 6.4 mmol) in EtOH (400 mL) was treated with 3-(dimethylamino)propyl chloride hydrochloride (10.0 g, 64 mmol) and K2CO3 (13 g, 96 mmol) and heated under reflux for 3 hours. A further 10 equivalents of the reagents were then added, and the mixture was heated under reflux for a further 48 hours. EtOH was removed under reduced pressure, and the residue was diluted with water to give crude product. This was chromatographed on alumina, eluting with CH2Cl2 containing 0.2% MeOH, to give 1-[3-(dimethylamino)propyl] -2-(methylthio)-N-phenyl-1H-indole-3-carboxamide [XXVI: R8 =H, R9 =(CH2)3NMe2 ] (0.49 g, 21%) as an oil.

Provenance & Evidence