反应详情

The title compound was prepared from 3-bromo-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (700 mg, 2.921 mmol) and 2-(cyclopentyloxy)-3-methoxybenzaldehyde (998 mg, 4.391 mmol) in the presence of sodium ethoxide (398 mg, 5.842 mmol) in absolute ethanol (30 ml) as described in Intermediate 1 to give 358 mg of the product as a light yellow solid; IR (KBr) 2958, 1679, 1620, 1528, 1436, 1264, 1065, 971 cm−1; 1H NMR (300 MHz, CDCl3) δ 1.60-1.75 (m, 4H), 1.95-2.10 (m, 4H), 3.87 (s, 3H), 4.94 (br s, 1H), 6.90 (d, J=7.8 Hz, 1H), 7.02-7.10 (m, 1H), 7.35 (d, J=7.5 Hz, 2H), 7.56-7.72 (m, 3H), 8.44 (d, J=16.2 Hz, 1H), 8.94 (d, J=7.2 Hz, 1H).