熔点:76.5 – 78.1 oC. 1H NMR (400 MHz, CDCl3) δ 8.00 (d, J = 7.6 Hz, 2H), 7.62 – 7.56 (m, 3H), 7.49 (d, J = 7.4 Hz, 4H), 6.28 (s, 1H), 3.67 – 3.56 (m, 1H), 2.59 (s, 3H), 2.48 (d, J = 17.8 Hz, 1H), 2.21 (d, J = 12.9 Hz, 1H), 1.95 – 1.85 (m, 1H). 13C NMR (101 MHz, CDCl3) δ 202.92, 145.17, 136.89 – 136.51 (m), 136.18, 135.32, 133.08, 128.75, 128.32, 125.40, 125.26, 125.22, 41.00, 28.64, 27.01, 26.12. HRMS (EI): calcd for C20H17F3O: 330.1231, found: 330.1228.