“…: 1 H and13 C NMR spectra of the product were identical to those reported in reference [2j].1 H NMR (400 MHz, CDCl 3 ): d = 7.34 (d, J = 8.4 Hz, 1 H), 7.23-7.15 (m, 4 H), 7.11-7.07 (m, 1 H), 6.49 (dd, J = 8.4, 2.4 Hz, 1 H), 6.38 (d, J = 2.4 Hz, 1 H), 3.80 (s, 3 H), 3.33 (s, 3 H), 1.64 ppm (s, 6 H); 13 C NMR (100 MHz, CDCl 3 ): d = 159.4, 151.7, 131.2, 127.5, 127.0, 125.6, 125.5, 124.7, 103.5, 100.6, 55.2, 55.1, 41.4, 29.8, 29.7 ppm.…”