“…Following the general procedure, reaction of 2-methoxy-6-methylquinoline-3-carbaldehyde (201 mg, 1 mmol), Na 2 SO 4 (410 mg, 3 mmol), Et 3 N (0.30 mL, 2 mmol), and N -benzylhydroxylamine hydrochloride (239 mg, 1.5 mmol) in EtOH (15 mL), after 3 h, and column chromatography (hexane/EtOAc, 9:1, v/v) gave nitrone 14 (92 mg, 30%) as a pale yellow solid: mp 142–4 °C; IR (KBr) ν max 2943, 1595, 1447, 1344, 1257 cm –1 ; 1 H NMR (400 MHz, CDCl 3 ) δ 10.02 (s, 1H, H4), 8.03 [s, 1H, H CN(O)CH 2 C 6 H 5 ], 7.67 (d, J = 8.5 Hz, 1H, H8), 7.52–7.50 {m, 3H: 1H (H7) + 2H [HCN(O)CH 2 C 6 H 5 ], 7.42 {m, 4H: 1H (H5) + 3H [HCN(O)CH 2 C 6 H 5 ]}, 5.10 [s, 2H, HCN(O)C H 2 C 6 H 5 ], 4.07 (s, 3H, OCH 3 ), 2.45 (s, 3H, CH 3 ); 13 C NMR (101 MHz, CDCl 3 ) δ 158.3, 144.9, 137.0, 134.4, 133.6, 133.0, 129.3 (2C), 129.2, 129.1 (2C), 128.7, 128.3, 126.7, 125.2, 115.2, 71.9, 53.9, 21.5. MS (ESI) m / z : 307 [M + 1] + , 329 [M + Na] + .…”