13C-NMR (75 MHz, DMSO-303.10 (100%). (2k). d J = 8.00 Hz, Ar-H), 7.65 (2H, d = 8.04 Hz, Ar-H), 8.38 (1H, d = 9.05 Hz, pyridine-H), 8.53 (1H, s, N=CH), 11.62 (1H, s, NH). 13C-NMR (75 MHz, DMSO-301. (2e). Produce: 80%, Melting stage: 175 C, 1H-NMR (300 MHz, DMSO-= 9.03 Hz, pyridine-H), 7.05 (2H, d […]