1H NMR (400 MHz, CDCl3) δ 8.15 (s, 1H), 8.04 (s, 1H), 7.46 – 7.30 (m, 5H), 5.68 (s, 1H), 5.35 (s, 1H). 13C NMR (101 MHz, CDCl3) δ 152.22, 143.14, 142.72, 134.28, 129.79, 128.74, 127.57, 107.58. HRMS (EI): calcd for C10H9N3: 171.0796, found: 171.0793。