Iodoethane → HCID 21473333, compound

Participants

Reaction Conditions

Reaction Steps

In 96 ml of N,N-dimethylformamide was dissolved 3.0 g (0.01 mole) of ethyl 7-fluoro-8-difluoromethoxy-4-hydroxyquinoline-3-carboxylate obtained as described above, and 6.9 g (0.05 mole) of potassium carbonate and 12.5 g (0.08 mole) of ethyl iodide were added thereto. The mixture was stirred at 100° C. for 14 hours. After completion of the reaction, the solvent was removed under reduced pressure, and water was added to the residue. Crystals precipitated were collected by filtration and applied to silica gel column chromatography (the eluent used was a mixture of chloroform: methanol = 95 : 5) to obtain 1.1 g of ethyl 1-ethyl-7-fluoro-8-difluoromethoxy-1.4-dihydro-4-oxoquinoline-3-carboxylate as white crystals.

Provenance & Evidence