Phenol → 5-chloro-4-[(5-chloro-6-phenoxypyridin-3-yl)oxy]-2-fluoro-N-(methylsulfonyl)benzamide

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-chloro-4-[(5-chloro-6-fluoropyridin-3-yl)oxy]-2-fluoro-N-(methylsulfonyl)benzamide (Example 19, 100 mg, 0.25 mmol) and phenol (71 mg, 0.76 mmol) in DMSO (1 mL) was added Cs2CO3 (246 mg, 0.76 mmol) at room temperature under N2. The resulting mixture was stirred at 100° C. for 45 minutes. The reaction mixture was allowed to cool to room temperature. The reaction was quenched with water, and acidified with 1N aqueous citric acid solution. The mixture was extracted with DCM (3×3 mL) and filtered through a phase separation cartridge. The organic phase was washed with brine (3 mL), and filtered through a phase separation cartridge. The filtrate was dried by N2 blowing to give a crude product that was purified by reverse phase column chromatography eluting with 5-95% CH3CN in water to give a crude white solid. The solid was purified using trituration with heptane/acetone 9/1 to give the title compound (78 mg, 65%) as a white solid.

Provenance & Evidence