Acetyl chloride → N-(5-{[2-(acetylamino) [1,3]thiazolo[5,4-b]pyridin-5-yl]oxy}-4-chloro-2-fluorophenyl)-2,2,2-trifluoroacetamide

Participants

Reaction Steps

To a solution of N-{5-[(2-amino[1,3]thiazolo[5,4-b]pyridin-5-yl)oxy]-4-chloro-2-fluorophenyl}-2,2,2-trifluoroacetamide (2.03 g, 5 mmol) and N,N-dimethylpyridine-4-amine (0.61 g, 5 mmol) in pyridine (10 mL) was added dropwise acetyl chloride (0.78 g, 10 mmol) under ice-cooling, and the mixture was stirred at room temperature for 3 hr. The reaction solution was concentrated under reduced pressure, and the residue was diluted with ethyl acetate (50 mL), washed with water (50 mL×2), and dried over anhydrous magnesium sulfate. The insoluble material was filtered off, and the filtrate was concentrated under reduced pressure. The obtained residue was washed with diethyl ether, collected by filtration, and dried under reduced pressure to give the title compound (2.16 g, 96%) as white powder crystals.

Provenance & Evidence