反应详情

To a solution of 5-(3,3-diethoxyprop-1-ynyl)-3-ethyl-6-methyl-1-(3-(trifluoromethyl)phenyl)pyrimidin-2,4(1H,3H)-dione (2.40 g) in acetonitrile (72 ml) were added 4-cyanophenylhydrazine (1.11 g) and concentrated sulfuric acid (0.30 ml) and the resulting mixture was stirred at room temperature for thirty minutes. The resulting mixture was cooled to 0° C. and thereto was added water (140 ml) dropwise, and the solids were collected by filtration and washed with water to afford (Z)-4-(2-(3-(3-ethyl-6-methyl-2,4-dioxo-1-(3-(trifluoromethyl)phenyl)-1,2,3,4-tetrahydropyrimidin-5-yl)prop-2-yneylidene)hydrazinyl)benzonitrile (2.50 g) as brown solid.

1. temperatureThe resulting mixture was cooled to 0° C.
2. filtrationthe solids were collected by filtration
3. washwashed with water