[CH3:1][N:2]1[CH2:7][CH2:6][NH:5][CH2:4][CH2:3]1.CN1C(=O)CCC1.C(N(CC)CC)C.F[C:23]1[CH:24]=[CH:25][C:26]([N+:31]([O-:33])=[O:32])=[C:27]([C:29]=1[F:30])[NH2:28]>O>[F:30][C:29]1[C:23]([N:5]2[CH2:6][CH2:7][N:2]([CH3:1])[CH2:3][CH2:4]2)=[CH:24][CH:25]=[C:26]([N+:31]([O-:33])=[O:32])[C:27]=1[NH2:28]A solution of N-methylpiperazine (1.0 eq), NMP, triethylamine (3.0 eq) and 5,6-difluoro-2-nitroaniline (1.0 eq) were heated at 90° C. for 1 hour. The reaction was allowed to cool to room temperature and then poured into water and let stand for 1 hour. The resulting solid was collected and dried and utilized without further purification. MH+=255.3
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