1,2-Dichloroethane → HCID 86720684, compound

Participants

Reaction Steps

HOBT (0.29 g, 1.92 mmol) was added to a solution of 5-(6-methoxy-4′-sulfamoyl-[1,1′-biphenyl]-3-yl)-1,4-dimethyl-1H-pyrrole-2-carboxylic acid (10c, 0.70 g, 1.75 mmol) in DMF (15 ml) under stirring at room temperature. N,O-dimethylhydroxylamine hydrochloride (0.33 g, 3.5 mmol) was then added to the reaction mixture. The reaction mixture was cooled to 0° C. and EDC (0.50 g, 2.60 mmol) and triethylamine (0.70 g, 0.97 ml, 7.00 mmol) were added to it. The reaction mixture was stirred at room temperature for 15 hours. The progress of the reaction was monitored by TLC. The reaction mixture was concentrated under reduced pressure. The residue obtained after concentration was mixed with ethyl acetate (50 ml) and the resultant mixture was washed with saturated sodium bicarbonate solution (10 ml) followed by washing with brine (10 ml). The organic layer separated was dried over anhydrous sodium sulphate and concentrated under reduced pressure to obtain a crude product. The crude product was further purified by flash column chromatography using 4% methanol in DCM as an eluent to obtain the title compound 10d (0.67 g, 87%).

Provenance & Evidence