[F:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[N:8]=[C:7]([N:12]1[CH2:17][CH2:16][N:15](C=O)[CH2:14][CH2:13]1)[CH:6]=[CH:5]2.S(=O)(=O)(O)O>>[F:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[N:8]=[C:7]([N:12]1[CH2:13][CH2:14][NH:15][CH2:16][CH2:17]1)[CH:6]=[CH:5]2The title compound may be prepared by treatment of 4-(6-fluoroquinolin-2-yl)piperazine-1-carbaldehyde of Step E with 4M sulfuric acid.
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