Methanol → 2-Fluoro-3-(propane-1-sulfonylamino)-benzoic acid methyl ester

Participants

Reaction Steps

To a 2-fluoro-3-(propane-1-sulfonylamino)-benzoic acid (64, 5.05 g, 0.0193 mol) in methylene chloride (100 mL) was added N,N-dimethylformamide (0.075 mL, 0.97 mmol) under an atmosphere of nitrogen. The reaction was cooled with ice/water, followed by slow addition of Oxalyl chloride (2.00 M of in methylene chloride, 10.8 mL, 21.6 mmol). The reaction mixture was stirred at room temperature for 3.0 hours. The reaction was cooled with ice/water, followed by addition of methanol (36.0 mL, 0.89 mol) slowly. The reaction was stirred at room temperature overnight. The reaction was concentrate and purified with silica gel column chromatography eluting with 30% ethyl acetate in hexane to give a crude white solid 4.0 g.

Provenance & Evidence