1H NMR (400 MHz, CDCl3) δ 7.49 – 7.36 (m, 4H), 7.34 – 7.28 (m, 4H), 7.25 (d, J = 6.4 Hz, 2H), 7.16 (s, 1H), 6.51 (s, 2H), 6.09 (s, 2H). 13C NMR (101 MHz, CDCl3) δ 141.17, 138.52, 130.15, 129.67, 128.81, 128.34, 127.76, 127.37, 127.34, 124.76, 121.49, 109.28. GC-MS (m/z): 245。
