“…The obtained product was a pale yellow oil (yield 1.8 g, 84%): 1 H NMR (500 MHz, CDCl 3 ) δ 7.41 (m, 3H), 7.30 (m, 2H), 4.56 (s, 1H), 1.78 (s, 3H); 13 C NMR (126 MHz, CDCl 3 ) δ 131.0, 129.3, 128.7, 126.3, 88.8, 62.6, 12.2 ppm; HRMS (EI) calcd for C 9 H 9 NO 3 (M) 179.0582, found 179.0587; IR (KBr) δ 3062, 3028, 2948, 1555, 1495, 1354, 1158, 899 cm –1 …”