Piperazine → HCID 23499079, compound

Participants

Reaction Steps

A solution of ethyl 1-allyl-7-fluoro-4-quinolone-3-carboxylate (390 mg, 1.41 mmol) and piperazine (1.22 g, 14.1 mmol) in dry N,N-dimethylformamide was heated for 7 hours at 110° C., then stirred at room temperature for 2 days. The solvent was evaporated to dryness, and the residue was purified by column chromatography on silica gel using dichloromethane:methanol (gradient from 98:2 to 85:15) as eluent affording 300 mg (62% yield) of ethyl 1-allyl-4-oxo-7-(4-piperazinyl)quinoline-3-carboxylate.

Provenance & Evidence