反应详情

A mixture of ethyl 4-chloro-3-oxobutanoate (15 g, 91 mmol) and pyridin-2-amine (8.58 g, 91 mmol) in THF (80 mL) was refluxed overnight. Then, the reaction mixture was concentrated and the residue purified by silica gel chromatography (PE:EA=1:1) to afford ethyl 2-(imidazo[1,2-a]pyridine-2-yl)acetate (5 g, yield 26.9%).

1. temperaturewas refluxed overnight
2. concentrationThen, the reaction mixture was concentrated
3. customthe residue purified by silica gel chromatography (PE:EA=1:1)