“…36 64–65 °C); 1 H NMR (500 MHz, CDCl 3 ) δ 8.15 (dd, J = 7.7, 1.4 Hz, 1H), 7.62 (td, J = 7.5, 1.4 Hz, 1H), 7.56 (td, J = 7.6, 1.3 Hz, 1H), 7.4 (dd, J = 7.6, 1.0 Hz, 1H), 5.86 (s, 2H), 3.91 (s, 3H); 13 C NMR (125 MHz, CDCl 3 ) δ 166.8, 133.3, 133.2, 131.8, 130.8, 130.4, 130.2, 77.7, 52.6; IR (film) 3024, 2960, 1714, 1569, 1429, 1377, 1285, 1086 cm −1 ; HRMS (CI) calcd for C 9 H 9 O 2 [M-NO 2 ] + , m/z = 149.0602; found 149.0597.…”