1H NMR (400 MHz, CDCl3) δ 7.97 (d, J = 13.7 Hz, 1H), 7.57 (d, J = 13.7 Hz, 1H), 7.40 – 7.28 (m, 4H), 2.40 (s, 3H). 13C{1H} NMR (101 MHz, CDCl3) δ 139.20, 139.17, 136.86, 132.96, 129.93, 129.65, 129.20, 126.31, 21.18. GC-MS (m/z): 163.