Dichloromethane → 5-Chloro-2-fluoro-4-[5-fluoro-2-pyridazin-4-yl-4-(trifluoromethyl)phenoxy]-N-1,3,4-thiadiazol-2-ylbenzenesulfonamide

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Reaction Steps

Trifluoroacetic acid (500 uL, 6 mmol) was added to a solution of 5-chloro-N-(2,4-dimethoxybenzyl)-2-fluoro-4-[5-fluoro-2-pyridazin-4-yl-4-(trifluoromethyl)phenoxy]-N-1,3,4-thiadiazol-2-ylbenzenesulfonamide (22 mg) in methylene chloride (5 mL, 70 mmol). After stirring 20 min, the reaction mixture was concentrated onto diatomaceous earth and purified by automated flash chromatography (4 g SiO2, methylene chloride to 9:1 methylene chloride-methanol) to afford the product as a tan solid (6 mg, 9%).

Provenance & Evidence