Methanol → 1-[5-(2-fluoro-6-methoxyphenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl]-N-methylmethanamine Fumarate

Participants

Reaction Conditions

Reaction Steps

tert-Butyl {[5-(2-fluoro-6-methoxyphenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl]methyl}methylcarbamate (100 mg) was dissolved in methanol (20 mL), a 4 mol/L hydrogen chloride-ethyl acetate solution (2 mL) was added and the mixture was stirred at 70° C. for 20 min. The reaction mixture was concentrated under reduced pressure, a saturated aqueous sodium hydrogencarbonate solution was added, and the mixture was extracted with ethyl acetate. The obtained organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was dissolved in ethanol (6 mL), fumaric acid (49 mg) was added, and the obtained crystals were collected by filtration to give the title compound as colorless crystals (yield 53 mg, 51%).

Provenance & Evidence