熔点: 100.8-102.3 oC,1H NMR (400 MHz, CDCl3) δ 8.09 (d, J = 7.8 Hz, 1H), 7.97 (s, 1H), 7.79 (s, 1H), 7.45 (t, J = 7.8 Hz, 1H), 7.32 (t, J = 8.0 Hz, 5H), 2.54 (s, 3H), 2.47 (s, 3H). 13C{1H} NMR (101 MHz, CDCl3) δ 182.16, 157.42, 142.06, 139.57, 138.05, 135.75, 134.99, 132.21, 131.61, 131.56, 130.94, 129.23, 128.89, 128.67, 126.16, 125.13, 21.63, 20.75. HRMS (ESI) (M+H)+ Calcd. for C18H16NO2: 278.1176, Found: 278.1173.