Water → HCID 23289169, compound

Participants

Reaction Conditions

Reaction Steps

4.8 g (15 mmol) of 3-(2,4-difluoro-6-hydroxyphenyl)-1-methyl-6-trifluoromethyluracil and 3.2 g (23 mmol) of potassium carbonate were suspended in 50 ml of N,N-dimethylformamide, and 2.5 g (21 mmol) of propargyl bromide was dropwise added thereto at room temperature. After stirring at from 60 to 70° C. for 5 hours, the reaction solution was poured into water and extracted with ethyl acetate. The organic layer was washed sequentially with water and a saturated sodium chloride aqueous solution and then, dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure. Then, the obtained crude crystals were washed with isopropyl ether to obtain 5.0 g (yield: 92.63%) of the desired product as yellowish brown powder. Melting point: 159-162° C.

Provenance & Evidence