Methyl iodide → HCID 69019480, compound

Participants

Reaction Conditions

Reaction Steps

Into a round bottom flask containing a solution of 4-cyano-5-ethyl-1-methyl-3-[4-(1H-tetrazol-5-yl)-phenyl]-1H-pyrrole-2-carboxylic acid ethyl ester (0.116 g, 0.331 mmol, prepared in example E-242) in DMF (2 mL) cooled to 0° C. while stirring add NaH (0.015 g, 0.364 mmol, 60% in mineral oil). Let stir for 20 min, then add methyl iodide (0.022 mL, 0.364 mmol) and let stir for 3 h. Dilute the mixture with brine (20 mL) and extract the mixture with EtOAc (3×30 mL). Combine the organic layers and wash with brine (2×30 mL), aqueous NH4Cl (1×30 mL), aqueous NaHCO3 (1×30 mL) and water (1×30 mL). Dry the organic layer over anhydrous Na2SO4, filter and concentrate under reduced pressure. Separate the two regioisomeric products via silica gel chromatography (eluent: 20 to 98% EtOAc in hexanes) and concentrate under reduced pressure the purified fractions. Place the residue under vacuum to give the title compound as a white solid (0.055 g); mass spectrum (m/e): 365.07 (M+H)

Provenance & Evidence