[NH:1]1[CH:6]=[CH:5][C:4](=[O:7])[NH:3][C:2]1=[O:8].F[C:10]1[CH:15]=[CH:14][C:13]([N+:16]([O-:18])=[O:17])=[CH:12][CH:11]=1.C([O-])([O-])=O.[Cs+].[Cs+].O>CN(C=O)C>[N+:16]([C:13]1[CH:14]=[CH:15][C:10]([N:1]2[CH:6]=[CH:5][C:4](=[O:7])[NH:3][C:2]2=[O:8])=[CH:11][CH:12]=1)([O-:18])=[O:17]A mixture of 3.5 g 1H-Pyrimidine-2,4-dione and 3 g 1-Fluoro-4-nitro-benzene and 13.8 g Cs2CO3 in 60 mL DMF was heated to 80° C. for 12 h. This solution was poured on to 200 mL of water and the resulting precipitate was collected by filtration to yield a bright yellow crystalline product, which was dried under reduced pressure. Yield: 2.6 g.
Wird geladen…