1H NMR (400 MHz, CDCl3) δ 7.40 (d, J = 6.3 Hz, 4H), 7.33 (t, J = 7.2 Hz, 2H), 7.29 - 7.23 (m, 1H), 7.06 (d, J = 8.1 Hz, 2H), 6.20 (s, 1H), 4.69 - 4.60 (m, 1H), 4.59 - 4.46 (m, 2H), 2.71 - 2.58 (m, 2H). 19F NMR (376 MHz, CDCl3) δ -114.95. 13C NMR (100 MHz, CDCl3) δ 163.5, 161.1, 134.0, 138.3, 134.3, 128.5, 128.0 - 127.3 (m), 124.8, 122.2, 115.3 (d, J = 21.3 Hz), 75.3, 66.9, 35.0. HRMS (ESI): calcd for C17H15FNaO+: 277.0999, found: 277.1004.