HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → 1-(4-Fluorophenyl)-5-methyl-6,7-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | HCID 14651265 | HCID 14651265 | — |
| Solvent | Acetic Acid | HCID 176 | — |
| Product | 1-(4-Fluorophenyl)-5-methyl-6,7-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid | HCID 14651264 | 94.9% |
Reaction Steps
Employing ethyl 1-(4-fluorophenyl)-5-methyl-6,7-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylate (0.56 g), conc. hydrochloric acid (1.5 ml), and 90% acetic acid (6 ml), the procedure of Reference Example 10 is repeated to give 1-(4-fluorophenyl)-5-methyl-6,7-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (0.49 g), as white crystals, m.p. 255°-257° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05811576 |
| Source dataset | uspto-grants-1998_09 |
| ORD ID | ord-4a0fa75afb7d45d2ac9dd2dd97e436e9 |
| Source note | uspto-grants-1998_09 |