1H NMR (400 MHz, CDCl3) δ 7.61 (d, J = 4.3 Hz, 1H), 7.29 (d, J = 8.0 Hz, 1H), 7.21 (d, J = 3.6 Hz, 1H), 7.10 (d, J = 4.4 Hz, 1H), 7.00 (d, J = 2.0 Hz, 1H), 6.47 (d, J = 2.6 Hz, 1H), 3.73 (s, 3H). 13C NMR (101 MHz, CDCl3) δ 136.66, 128.71, 128.44, 121.42, 120.81, 119.21, 109.12, 100.84, 32.70. GC-MS (m/z): 131。
