Methyl iodide → HCID 67339781, compound

Participants

Reaction Steps

Iodomethane (1.22 mL, 19.63 mmol) was added in one portion to 3-[1-(tert-butoxycarbonyl)-1,2,3,6-tetrahydropyridin-4-yl]-1H-indole-5-carboxylic acid (6.72 g, 19.63 mmol) and potassium carbonate (3.26 g, 23.55 mmol) in DMF (60 mL) at ambient temperature. The resulting mixture was stirred at ambient temperature for 3 hours then quenched in water (200 mL) and extracted with MTBE (2×100 mL). The extract was washed sequentially with water (3×100 mL) and saturated brine, dried over MgSO4 and concentrated by evaporation then purified by flash silica chromatography, elution gradient 20 to 35% EtOAc in isohexane. Pure fractions were evaporated to dryness to afford methyl 3-[1-(tert-butoxycarbonyl)-1,2,3,6-tetrahydropyridin-4-yl]-1H-indole-5-carboxylate (5.09 g, 73%) as a colourless solid.

Provenance & Evidence