Hydroxybenzenesulfonic acid → N-[4-({2-[(cyclopropylcarbonyl)amino]imidazo[1,2-a]pyridin-6-yl}oxy)phenyl]-1-(4-fluorophenyl)-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxamide benzenesulfonate monohydrate

Participants

Reaction Steps

To a solution (90 mL) of N-[4-({2-[(cyclopropylcarbonyl)amino]imidazo[1,2-a]pyridin-6-yl}oxy)phenyl]-1-(4-fluorophenyl)-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxamide (400 mg, 0.744 mmol) in tetrahydrofuran was added benzenesulfonic acid monohydrate (197 mg, 1.12 mmol) at 80° C. The mixture was filtered, and the filtrate was gradually cooled to room temperature. The solution at room temperature was distilled off at 110° C. to evaporate tetrahydrofuran to about half, and gradually cooled again to room temperature. The precipitate was collected by filtration, and the solid was washed with tetrahydrofuran and dried to give the title compound (309 mg, 58%) as a white solid.

Provenance & Evidence