2-(Dimethylamino)ethanol → 6-(2-Dimethylamino-ethoxy)-1-isopropyl-1H-indole-4-carboxylic acid methyl ester

Participants

Reaction Steps

To a cooled (0° C.) mixture of 6-hydroxy-1-isopropyl-1H-indole-4-carboxylic acid methyl ester (700 mg, 3 mmol), 2-dimethylamino-ethanol (320 mg, 3.60 mmol) and PPh3 (948 mg, 3.60 mmol) in THF (10 mL) was added DEAD (620 mg, 3.60 mmol) and stirred for 16 h at RT. Reaction mixture was concentrated under reduced pressure and the residue was purified by column chromatography by eluting with 2% MeOH in chloroform to afford the title compound (550 mg, 60%) as colorless gum. LCMS (ES+): m/z=305.36[M+H].

Provenance & Evidence