1H NMR (400 MHz, CDCl3) δ 7.41 (d, J = 7.5 Hz, 2H), 7.39 - 7.32 (m, 6H), 7.29 (d, J = 6.7 Hz, 1H), 6.21 (s, 1H), 4.66 (t, J = 6.3 Hz, 1H), 4.63 - 4.47 (m, 2H), 2.65 (s, 2H). 13C NMR (100 MHz, CDCl3) δ 140.9, 139.9, 134.2, 133.3, 128.6, 128.5, 127.5, 127.4, 124.8, 122.2, 75.2, 66.8, 34.9. HRMS (ESI): calcd for C17H15ClNaO+: 293.0704, found: 293.0701.