1H NMR (400 MHz, CDCl3) δ 7.42 (s, 1H), 7.31 (m, 1H), 7.21 (m, 2H), 6.92 (s, 1H), 2.52 (s, 3H). 13C{1H} NMR (101 MHz, CDCl3) δ 143.23, 139.18, 134.17, 129.49, 127.82, 127.73, 126.20, 94.40, 16.67. GC-MS (m/z) = 310.