Trifluoroacetic acid → HCID 178468489, compound

Participants

Reaction Steps

Into a round bottom flask containing 4-cyano-5-ethyl-3-{4-[1-(4-methoxybenzyl)-1H-tetrazol-5-yl]-phenyl}-1-methyl-1H-pyrrole-2-carboxylic acid ethyl ester (0.15 g, 0.33 mmol, prepared in example E-241) add TFA (2 mL) and stir over night. Concentrate the mixture and azeotrope the residue with a mixture of methylene chloride/hexanes. Dilute the mixture with 0.500 N HCl (20 mL) and extract with ethyl acetate (3×30 mL). Combine the organic extracts, dry over anhydrous sodium sulfate, filter, and concentrate under reduced pressure. Purify the residue by silica gel chromatography (eluent: 0 to 5% MeOH/ethyl acetate). Concentrate the purified fractions under reduced pressure and place under vacuum to provide the title compound as a tan solid (0.105 g); mass spectrum (m/e): 351.05 (M+H)

Provenance & Evidence