Methyl iodide → 3-[1-(3-Carboxy-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-quinolyl)-3-pyrrolidinyl]-1-methylpyridinium iodide

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Reaction Steps

Iodomethane (1.62 g, 11.4 mmol) was added dropwise to a stirred suspension of 1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-[3-(3-pyridinyl)-1-pyrrolidinyl]-3-quinolinecarboxylic acid (0.30 g, 0.8 mmol) in acetonitrile (30 mL). The resulting mixture was heated at reflux for 2 hours. The suspension was then filtered, the solids were washed with acetonitrile and ether, and dried in vacuo at 40° C. to give the title compound (0.38 g, 88%) as a light yellow solid, mp 278°-280° C.

Provenance & Evidence