反应详情

To a solution of 4-(5-(3,6-dimethyl-2,4-dioxo-1-(3-(trifluoromethyl)phenyl)-1,2,3,4-tetrahydropyrimidin-5-yl)-1H-pyrazol-1-yl)benzonitrile (prepared in Example 1) (665 mg) in acetic acid (15 ml) was added at room temperature bromine (0.75 ml) dropwise and the resulting mixture was stirred at room temperature for fifteen minutes. To the reaction mixture was added 10% aqueous sodium thiosulfate solution (30 ml) and the solids formed were filtered and then washed with hexane (50 ml) and dried under reduced pressure to afford 4-(4-bromo-5-(3,6-dimethyl-2,4-dioxo-1-(3-(trifluoromethyl)phenyl)-1,2,3,4-tetrahydropyrimidin-5-yl)-1H-pyrazol-1-yl)benzonitrile (692.8 mg) as brown solid.

1. customthe solids formed
2. filtrationwere filtered
3. washwashed with hexane (50 ml)
4. customdried under reduced pressure