Pyridine → N-[5-(5-Chloropyridin-3-ylethynyl)-2-fluorophenyl]-methanesulfonamide

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Reaction Steps

Add pyridine (193 mg, 2.44 mmol) followed by methanesulfonyl chloride (127 mg, 1.11 mmol) to a solution of 5-(5-chloropyridin-3-ylethynyl)-2-fluorophenylamine, (prepared as described in EXAMPLE 190), (275 mg, 1.11 mmol) in dichloromethane (10 mL) at 0° C. under nitrogen. Warm to room temperature and stir 20 h. Add additional methanesulfonyl chloride (32 mg, 0.28 mmol). Stir at room temperature for 2 h. Concentrate and purify by silica gel chromatography, eluting with 3:1 ethyl acetate:hexanes, to give the title compound as a white solid (330 mg, 92%).

Provenance & Evidence