HCID 19807254, compound → HCID 10409570, compound

Participants

Reaction Steps

Ethyl 1-cyclopropyl-6-fluoro-7-[2-(hydroxymethyl)-6-methyl-4-pyridinyl]-1,4-dihydro-4-oxo-3-quinolinecarboxylate hydrochloride (6.68 g) in 40 ml thionyl chloride was heated at reflux for two hours. The excess thionyl chloride was removed in vacuo and by repeatedly adding ethanol and concentrating. The residue was crystallized from ethanol to give 5.50 g ethyl 1-cyclopropyl-7-[2-(chloromethyl)-6-methyl-4-pyridinyl]-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylate as its hydrochloride salt.

Provenance & Evidence