Hydrochloric Acid → HCID 14422906, compound

Participants

Reaction Steps

3.0 g of ethyl 7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-8-nitro-4-oxo-3-quinoline-carboxylate and 1.92 g of ethyl cyanoacetate are initially introduced into 30 ml of dioxane. 1.91 g of potassium tert-butoxide are added in portions at room temperature. The mixture is stirred overnight and then heated to 50° for a further 4 hours. After cooling to room temperature, the mixture is diluted using ice-water and rendered acidic using HCl. The mixture is extracted using methylene chloride, and the organic phase is dried and concentrated. The residue is recrystallized from isopropanol.

Provenance & Evidence