2-Butanone, 3-bromo- → 6-Fluoro-2,3-dimethylimidazo[1,2-a]pyridin-8-amine

Participants

Reaction Steps

A mixture of 2,3-diamino-5-fluoropyridine (0.3 g, 2.4 mmol) and 3-bromo-2-butanon (0.36 g, 2.4 mmol) in ethanol (20 ml) was refluxed for 10 h. The solvent was evaporated under reduced pressure. The residue was dissolved in methylene chloride and was treated with a bicarbonate solution. The organic layer was separated, dried over sodium sulfate and evaporated under reduced pressure. The residue was purified with column chromatography on silica gel with methanol:methylene chloride (1:20) as eluent to give 0.16 g (37%) of the title compound.

Provenance & Evidence