2,4-Dioxo-1-[3-(trifluoromethyl)phenyl]-1,2,3,4-tetrahydropyrimidine-5-carbonitrile → HCID 86723841, compound

Participants

Reaction Conditions

Reaction Steps

2,4-Dioxo-1-(3-(trifluoromethyl)phenyl)-1,2,3,4-tetrahydropyrimidin-5-carbonitrile (prepared in Reference Example 112) (22.7 g) was suspended in hydrobromic acid (48%, 220 ml) and the resulting mixture was stirred with heating under reflux for ten hours. The resulting mixture was cooled to 0° C. and to the reaction solutions was then added 28% ammonia water (145 ml) dropwise, and the precipitated solids were collected by filtration and washed with water to afford 1-(3-(trifluoromethyl)phenyl)pyrimidin-2,4(1H,3H)-dione (17.8 g).

Provenance & Evidence