反应详情

To concentrated sulfuric acid (2.0 ml) were added in ice bath fuming nitric acid (0.2 ml), 6-methyl-3-propyl-1-(3-trifluoromethylphenyl)pyrimidin-2,4(1H,3H)-dione (prepared in Reference Example 21) (200.0 mg) and the resulting mixture was stirred for three hours in ice bath. The reaction mixture was poured into ice water, and the precipitated solids were collected by filtration to afford 6-methyl-5-nitro-3-propyl-1-(3-trifluoromethylphenyl)pyrimidin-2,4(1H,3H)-dione (219.0 mg).

1. filtrationthe precipitated solids were collected by filtration