Phenylurea → HCID 13313793, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of α-trifluoromethylacrylic acid (350 mg; 2.5 mmoles), phenylurea (353 mg; 2.6 mmoles) and acetic anhydride (2 ml) was heated at 100° C. with stirring for 1 hour. After cooling, the precipitated solid was collected by filtration to give 298 mg (yield: 46%) of 3-phenyl-5-trifluoromethyldihydrouracil. The solvent was evaporated from the filtrate, and the residue was recrystallized from chloroform/hexane to give additional 133 mg (yield: 21%) of the above product. The total yield was 67%. The physical and spectral properties of the resulting 3-phenyl-5-trifluoromethyldihydrouracil completely agreed with those of the product obtained in Example 11.

Provenance & Evidence