[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([S:8](Cl)(=[O:10])=[O:9])=[CH:4][N:3]=1.Cl.[F:13][CH2:14][CH:15]([NH2:18])[CH2:16][F:17]>N1C=CC=CC=1.C(OCC)(=O)C>[Cl:1][C:2]1[N:3]=[CH:4][C:5]([S:8]([NH:18][CH:15]([CH2:16][F:17])[CH2:14][F:13])(=[O:10])=[O:9])=[CH:6][CH:7]=12-Chloropyridine-5-sulfonyl chloride (18 g, 85 mmol) was added to a solution of 1,3-difluoro-2-propylamine hydrochloride (11.2 g, 58.1 mmol) in pyridine (25 mL) at 0° C. The reaction mixture was stirred at room temperature for 30 minutes, diluted with ethyl acetate (200 mL) and washed with 3N aq. HCl (3×100 mL). The organic layer was dried over Na2SO4, filtered and concentrated. The residue was triturated with hexane (2×50 mL) and filtered to provide the title compound as an off-white solid (15.7 g, 70%). 1H NMR (500 MHz, CDCl3): δ 8.79 (1H, d, J=2.4 Hz), 8.17 (1H, dd, J=2.6 Hz, 2.5 Hz), 7.49 (1H, d, J=8.2 Hz), 5.25 (1H br s), 4.58 (2H, m), 4.47 (2H, m), 3.77 (1H, m).
Wird geladen…
