HuagongsheHuagongshe Chemistry Print Report · For research reference only
Piperazine → 1-Cyclopropyl-8-ethenyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-3-quinolinecarboxylic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Piperazine | HCID 4837 | — |
| Reactant | 1-Cyclopropyl-8-ethenyl-6,7-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid | HCID 19365024 | — |
| Solvent | Acetonitrile | HCID 6342 | — |
| Product | 1-Cyclopropyl-8-ethenyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-3-quinolinecarboxylic acid | HCID 19786436 | 54.4% |
Reaction Steps
A mixture of 1-cyclopropyl-8-ethenyl-6,7-difluoro -1,4-dihydro-4-oxo-3-quinolinecarboxylic acid (0.40 g, 1.44 mmol), piperazine (0.80 g, 7.8 mmol), and CH3CN (3 mL) was refluxed for 16 hours. Workup was identical to that described in Example 1 to provide 0.28 g (54%) of the desired product; mp 213°-218° dec.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05175356 |
| Source dataset | uspto-grants-1992_12 |
| ORD ID | ord-66e5e32d5103408b9103a926482549d9 |
| Source note | uspto-grants-1992_12 |