Dimethyl Sulfoxide → HCID 86615013, compound

Participants

Reaction Conditions

Reaction Steps

Treat a solution 5-hydroxymethyl-N-methyl-N-propyl-isophthalamic acid ethyl ester (5.79 g, 20.7 mmol) in dichloromethane (50 mL) at −78° C. with oxalyl chloride (1.99 mL, 22.8 mmol), DMSO (3.5 mL, 49.5 mmol), and triethylamine (8.6 mL, 62.1 mmol). Stir at −78° C. for 30 min, warm to room temperature and stir for 1 h. Quench with ice and extract with dichloromethane (100 mL). Wash with saturated aqueous NaHCO3, saturated aqueous sodium chloride, dry (magnesium sulfate) concentrate and purify (silica gel chromatography, eluting with 40:60 to 50:50 ethyl acetate:hexanes) to give the title compound (4.53 g, 78%).

Provenance & Evidence