Hydrochloric Acid → HCID 59363794, compound

Participants

Reaction Conditions

Reaction Steps

To a sealed vessel were added 2-fluoro-5-(3-(2-isobutoxyphenyl)-3-oxopropanoyl)benzonitrile (5.9 g, 17.4 mmol), urea (10 g) and a solution of 4 N HCl in dioxane (80 mL). The reaction mixture was heated at 115° C. for 4 h then cooled. More urea (10 g) and 4 N HCl in dioxane (50 mL) were added to the vessel and the reaction was again heated to 115° C. for 4 h. Upon cooling, a precipitate formed and the reaction mixture was filtered in vacuo. The filtrate was determined by LC/MS to contain the desired product and was concentrated in vacuo. The concentrated reaction mixture was dissolved in dichloromethane (100 mL) and was neutralized with a solution of saturated sodium bicarbonate and was then partitioned between dichloromethane and water. The layers were separated and the aqueous layer was extracted with dichloromethane. The combined organic layers were dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo yielding 1.1 g crude 2-fluoro-5-(6-(2-isobutoxyphenyl)-2-oxo-1,2-dihydropyrimidin-4-yl)benzonitrile and was submitted to the next step with no further purification.

Provenance & Evidence