反应详情

Methyl 8-amino-2,3-dimethylimidazo[1,2-a]pyridine-6-carboxylate (0.7 g, 3.2 mmol), 2-ethyl-6-methylbenzylchloride (0.54 g, 3.2 mmol), potassium carbonate (0.9 g, 6.4 mmol) and a cat. amount of potassium iodide were added to acetonitrile (20 ml) and were refluxed for 6 h. Following filtration, the acetonitrile was evaporated under reduced pressure to give an oil. The oily residue was solved in methylene chloride and washed with water. The organic layer was separated, dried over Na2SO4 and evaporated under reduced pressure to give a solid. Purification by column chromatography on silica gel using methylene chloride:ethylacetate (10:1) as eluent gave 0.42 g (38%) of the title compound.

1. temperaturewere refluxed for 6 h
2. filtrationfiltration
3. customthe acetonitrile was evaporated under reduced pressure
4. customto give an oil
5. washwashed with water
6. customThe organic layer was separated
7. dry with materialdried over Na2SO4
8. customevaporated under reduced pressure
9. customto give a solid
10. customPurification by column chromatography on silica gel