1H NMR (400 MHz, CDCl3) δ 8.97 (s, 1H), 8.21 (d, J = 8.4 Hz, 1H), 8.01 (d, J = 8.4 Hz, 1H), 7.75 (t, J = 8.4 Hz, 3H), 7.69 (d, J = 7.2 Hz, 2H), 7.60 (d, J = 7.3 Hz, 2H), 7.57 – 7.46 (m, 3H), 7.45 – 7.36 (m, 2H). 13C{1H} NMR (101 MHz, CDCl3) δ 149.9, 148.6, 148.2, 141.4, 140.4, 136.9, 130.0, 129.8, 129.4, 128.9, 127.7, 127.3, 127.1, 126.7, 126.7, 125.8, 121.3. HRMS (EI) m/z: calcd for C21H15N, 281.1204; found, 281.1209.