反应详情

According to General Sulfonylation Procedure 2 in Example 1, to a solution of 4-(5-amino-pyridin-3-yl)-2-chloro-benzonitrile (20 mg, 87 μmol, 1 eq) in anhydrous pyridine (500 μl) was added (4-fluoro-phenyl)-methanesulfonyl chloride (20 mg, 96 μmol, 1.1 eq). The crude product was purified by Isco Cornbiflash® Companion™ flash chromatography system on normal phase (4 g SiO2, flow rate 18 mL/min), eluting with mixtures of dichloromethane/methanol, to give N-[5-(3-chloro-4-cyano-phenyl)-pyridin-3-yl]-1-(4-fluoro-phenyl)-methanesulfonamide (8.2 mg, >95% purity, yield: 23.4%). The isolated product was lyophilized and identified by LC-MS (system 1) and NMR (system 2): ESI-MS m/z: 402 [M+H]+, retention time=2.24 min, 1H NMR (400 MHz, DMSO-d6) δ ppm 4.67 (s, 2H) 7.09-7.16 (m, 2H) 7.29-7.37 (m, 2H) 7.66 (t, J=2.27 Hz, 1H) 7.78 (dd, J=8.15, 1.71 Hz, 1H) 8.02 (d, J=1.64 Hz, 1H) 8.09 (d, J=8.08 Hz, 1H) 8.34 (d, J=2.40 Hz, 1H) 8.61 (d, J=2.02 Hz, 1H) 10.24 (br. s., 1H).

1. customThe crude product was purified by Isco Cornbiflash® Companion™ flash chromatography system on normal phase (4 g SiO2, flow rate 18 mL/min)
2. washeluting with mixtures of dichloromethane/methanol