FC(F)(F)S(O[C:7]1[C:8]([C:18](=[O:20])[CH3:19])=[CH:9][C:10]([F:17])=[C:11]2[C:16]=1[N:15]=[CH:14][CH:13]=[CH:12]2)(=O)=O.[NH:23]1[CH2:28][CH2:27][NH:26][CH2:25][CH2:24]1.C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCCC1.ClCCl>[F:17][C:10]1[CH:9]=[C:8]([C:18](=[O:20])[CH3:19])[C:7]([N:23]2[CH2:28][CH2:27][NH:26][CH2:25][CH2:24]2)=[C:16]2[C:11]=1[CH:12]=[CH:13][CH:14]=[N:15]2A stirred mixture of 7-acetyl-5-fluoroquinolin-8-yltrifluoromethanesulfonate (1.00 g, 2.96 mmol, from Example 53, Step 2), piperazine (0.511 g, 5.93 mmol), and cesium carbonate (2.90 g, 8.90 mmol) in tetrahydrofuran (30 mL) was heated at 65° C. overnight. The mixture was cooled, diluted with dichloromethane and filtered. The filtrate was washed with brine, dried over sodium sulfate and evaporated to dryness. The resulting residue was purified on silica gel, eluting with 0 to 20% methanol in dichloromethane, to give the desired product (82 mg, 10%). LCMS calculated for C15H17FN3O (M+H)+: m/z=274.1; Found: 274.1.
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