1H NMR (400 MHz, CDCl3): δ 8.15 (d, J = 7.5 Hz, 2H), 7.35 (s, 1H), 7.31 – 7.20 (m, 9H), 6.96 (d, J = 7.1 Hz, 2H), 5.74 (s, 2H), 2.44 (s, 3H), 2.42 (s, 3H). 13C{1H} NMR (101 MHz, CDCl3): δ 183.9, 143.6, 143.3, 139.2, 139.0, 137.8, 135.1, 130.9, 129.5, 129.4, 129.1, 128.7, 128.6, 127.3, 126.0, 125.7, 49.1, 21.6, 21.3. HRMS (EI) m/z: calcd for C25H22N2O, 366.1732; found, 366.1735.