反应详情

(Some starting materials may be obtained from Frontier Scientific, Inc., Logan, Utah) To a 5 mL CEM microwave tube was added N-(2-chloro-5-(4-chloroquinolin-6-yl)pyridin-3-yl)-4-fluorobenzenesulfonamide (0.07 g, 0.2 mmol), 2-methoxypyridine-3-boronic acid hydrate (0.07 g, 0.5 mmol), sodium carbonate (0.2 mL, 0.5 mmol), Pd fibrecat PPh (20% wt, 15 mg), and dioxane (3 mL). The vial was sealed and placed into CEM microwave for 20 min. at 120° C., with 100 watts of power. LC/MS showed a desired product mass as a major peak. The reaction mixture was partitioned between DCM/water. The aqueous layer was extracted with DCM (2×10 mL). The combined organic layers were washed with water, brine, dried over MgSO4 and concentrated. The crude product was purified using SiO2 (12 g) chromatography with hexanes:acetone=80%:20% as the solvent system to afford the desired product as light yellow solid (25 mg). MS (ESI pos. ion) m/z: calc'd for C26H18ClFN4O3S: 520.1; found: 521.3 (M+1). 1H NMR (300 MHz, CHLOROFORM-d) δ ppm 3.95 (s, 3 H) 7.06-7.19 (m, 3 H) 7.42 (d, J=4.53 Hz, 1 H) 7.67 (dd, J=7.31, 1.90 Hz, 1 H) 7.72 (d, J=1.90 Hz, 1 H) 7.75-7.82 (m, 2 H) 7.90 (dd, J=8.77, 2.05 Hz, 1 H) 8.20 (d, J=2.34 Hz, 1 H) 8.31 (d, J=8.77 Hz, 1 H) 8.34 (d, J=2.19 Hz, 1 H) 8.40 (dd, J=5.04, 1.97 Hz, 1 H) 9.03 (d, J=4.38 Hz, 1 H).

1. customThe vial was sealed