Water → HCID 22048232, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of an amorphous solid of N-[1-butyl-4-[3-[3-(hydroxy)propoxy]phenyl]-1,2-dihydro-2-oxo-1,8-naphthyridin-3-yl]-N′-(2,6-diisopropyl-4-aminophenyl)urea hydrochloride (125 g) in methanol (375 ml) was stirred with heating at about 60° C. to dissolve the solid. Water (3.7 ml) was added thereto, and the mixture was stirred for 15 minutes, and filtered while the mixture was hot. The filtrate was stirred at 40° C. to 50° C. for about 2 hours, and then allowed to stand for cooling. The mixture was stirred at room temperature for 14 hours, and then stirred under ice-cooling for 2 hours. The precipitated crystals were collected by filtration to give the title compound as colorless crystals (87.5 g).

Provenance & Evidence