反应详情

Ethyl 8-amino-6-(aminocarbonyl)-2-methylimidazo[1,2-a]pyridine-3-carboxylate (0.41 g, 1.6 mmol), 2-ethyl-6-methylbenzylchloride, sodium carbonate (0.7 g, 6.6 mmol), sodium iodide (0.15 g, 1.0 mmol) and acetone (20 ml) were refluxed for 44 h. Methylene chloride was added and the solids were removed by filtration. The filtrate was evaporated under reduced pressure and purification of the residue by column chromatography on silica gel eluting with methylene chloride:methanol (100:4) gave 0.35 g (56%) of the title compound. 1H-NMR (300 MHz, CDCl3): δ1.25 (t, 3H), 1.45 (t, 3H), 2.35 (s, 3H), 3.65 (s, 3H), 2.7 (q, 2H), 4.4-4.45 (m, 4H), 5.0 (t, 1H), 6.95 (s, 1H), 7.0-7.2 (m, 3H), 9.2 (s, 1H)

1. customthe solids were removed by filtration
2. customThe filtrate was evaporated under reduced pressure and purification of the residue by column chromatography on silica gel eluting with methylene chloride:methanol (100:4)