Hydrochloric Acid → 6-{[3-fluoro-2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-2-methyl-4-(4-oxocyclohexyl)-7-propyl[1,2,4]triazolo[1,5-a]pyrimidin-5(4H)-one

Participants

Reaction Steps

A mixture of 4-(1,4-dioxaspiro[4.5]dec-8-yl)-6-{[3-fluoro-2′-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-2-methyl-7-propyl[1,2,4]triazolo[1,5-a]pyrimidin-5(4H)-one (0.25 g), 6N hydrochloric acid (2 mL) and tetrahydrofuran (10 mL) was stirred at room temperature for 2 hr. The reaction mixture was poured into saturated aqueous sodium hydrogen carbonate, and the mixture was adjusted to pH 4 with 1 N hydrochloric acid and extracted with ethyl acetate. The obtained ethyl acetate layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was recrystallized from ethyl acetate and hexane to give the title compound as colorless crystals (0.18 g, 74%).

Provenance & Evidence