FC(F)(F)S(O[C:7]1[C:8]([C:18](=[O:20])[CH3:19])=[CH:9][C:10]([Cl: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.O>[Cl: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-chloroquinolin-8-yl trifluoromethanesulfonate (1.1 g, 3.1 mmol, from Example 47, Step 2), piperazine (0.40 g, 4.7 mmol) and cesium carbonate (2.8 g, 8.7 mmol) in tetrahydrofuran (20 mL) was heated at 65° C. overnight. The mixture was cooled, diluted with water, and extracted with dichloromethane. The organic phases were combined, dried over MgSO4 and concentrated. The resulting residue was purified on silica gel (eluting with 15% methanol in dichloromethane) to give the desired product (0.57 g, 63%). LCMS calculated for C15H17ClN3O (M+H)+: m/z=290.1; Found: 290.1.
Wird geladen…
