Water → HCID 13337934, compound

Participants

Reaction Steps

A mixture of 3.31 g (0.01 mole) of 1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-3-quinolinecarboxylic acid and 5 g (0.058 mole) of methyl acrylate in 50 ml of ethanol is heated under reflux for 2 hours. The solution is poured into 10 ml of water and the precipitate is filtered off with suction, washed with methanol and recrystallised from glycol monomethyl ether. 2.9 g (70% of theory) of 1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-[4-(2-methoxycarbonylethyl)-1-piperazinyl]-3-quinolinecarboxylic acid of decomposition point 192° to 194° C. are obtained.

Provenance & Evidence