Hydrochloric Acid → 8-Cyano-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7(1-piperazinyl)-3-quinolinecarboxylic acid

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Reaction Steps

0.5 g of the product from Example 1 and 0.42 g of piperazine are boiled in 8 ml of dioxane for 3 hours. The mixture is then concentrated in vacuo and 8 ml of water are added to the residue. The solution formed is rendered neutral with HCl and the solid which has precipitated out isolated, washed and dried.

Provenance & Evidence