1H NMR (400 MHz, CDCl3) δ 7.44 - 7.30 (m, 2H), 6.98 (t, J = 8.5 Hz, 2H), 6.77 (s, 1H), 2.50 (s, 3H). 13C{1H} NMR (101 MHz, CDCl3) δ 162.35 (d, J = 248.4 Hz), 138.01 (d, J = 3.2 Hz), 137.62, 129.44 (d, J = 8.1 Hz), 115.13 (d, J = 21.8 Hz), 95.19, 16.60. GC-MS (m/z) = 294.