To a solution of 5-(2-chloro-pyridine-3-carbonyl)-1H-pyrrole-3-sulfonyl chloride (500 mg, 1.64 mmol) in DCM (5 mL) was added 4-(2-aminoethyl)morpholine (427 mg, 3.28 mmol) and triethylamine (0.5 mL). The mixture was stirred at room temperature for 4 hours. The reaction was extracted with DCM, the combined DCM was washed with water and brine, dried and concentrated. The residue was purified on a silica gel column to give 450 mg (69%) of 5-(2-chloro-pyridine-3-carbonyl)-1H-pyrrole-3-sulfonic acid (2-morpholin-4-yl-ethyl)-amide as a white solid.
