Aniline → HCID 69020353, compound

Participants

Reaction Steps

Add N-chlorosuccinimide (0.13 g, 1.0 mmol) to 3-(4-carboxy-phenyl)-4-cyano-5-ethyl-1-methyl-1H-pyrrole-2-carboxylic acid ethyl ester (0.33 g, 11.0 mmol, prepared in example E-157) and triphenyl-phosphine (0.26 g, 1.0 mmol) in methylene chloride at 0° C. with stirring. Allow the reaction to warm to room temperature. After 30 minutes, add aniline (0.18 mL, 2.0 mmol). After 2-3 hours, pour the reaction mixture into water and extract with methylene chloride. Combine the organic extracts, wash with water and brine, dry over anhydrous magnesium sulfate, filter, and concentrate under reduced pressure. Purify the residue by flash chromatography eluting with ethyl acetate:hexanes to provide the title compound. Mass spectrum (m/e): 402.0 (M+1).

Provenance & Evidence