1H NMR (400 MHz, CDCl3) δ 7.82 (s, 1H), 7.44 (d, J = 12.4 Hz, 4H), 7.36 (s, 5H), 7.20 (s, 2H), 6.88 (s, 1H). 13C NMR(101 MHz, CDCl3) δ 138.84, 136.75, 135.75, 133.06, 129.40, 129.35, 128.83, 128.74, 128.63, 127.54, 122.78, 121.29.HRMS (EI): calcd for C16H13N3: 247.1109, found: 247.1104。