1H NMR (400 MHz, CDCl3) δ 7.41 (d, J = 7.7 Hz, 2H), 7.27 (d, J = 7.5 Hz, 1H), 7.25 - 7.12 (m, 2H), 6.82 (s, 1H), 2.48 (s, 3H). 13C{1H} NMR (101 MHz, CDCl3) δ 141.61, 137.50, 128.31, 127.92, 127.85, 97.01, 16.64. GC-MS (m/z) = 276