1H NMR (400 MHz, Chloroform-d) δ 8.65 (d, J = 8.6 Hz, 1H), 8.10 (d, J = 2.9 Hz, 1H), 7.66 – 7.57 (m, 2H), 7.54 – 7.46 (m, 2H), 7.28 (dd, J = 8.9, 3.1 Hz, 1H), 3.96 (s, 3H).13C NMR (101 MHz, CDCl3) δ 179.70, 158.39, 137.53, 132.03, 130.23, 129.88, 129.19, 128.58, 127.31, 126.10, 126.00, 122.78, 110.33, 55.71. LCMS – 242 [M+]