HuagongsheHuagongshe Chemistry Print Report · For research reference only
Diethyl (ethoxymethylene)malonate → 6,7-dihydro-9-fluoro-1-oxo-5-trifluoromethyl-1H,5H-benzo[ij]quinolizine-2-carboxylic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Diethyl (ethoxymethylene)malonate | HCID 6871 | — |
| Reactant | HCID 21445341 | HCID 21445341 | — |
| Product | 6,7-dihydro-9-fluoro-1-oxo-5-trifluoromethyl-1H,5H-benzo[ij]quinolizine-2-carboxylic acid | HCID 13094369 | — |
Reaction Steps
6-Fluoro-2-trifluoromethyltetrahydroquinoline is condensed with an equimolar amount of diethylethoxymethylenemalonate according to the method of Example 1. The ester intermediate of Formula III is hydrolyzed according to Example 1, and the solid product is recrystallized from N,N-dimethyl formamide to provide crystals of 6,7-dihydro-9-fluoro-1-oxo-5-trifluoromethyl-1H,5H-benzo[ij]quinolizine-2-carboxylic acid, m.p. 295°-297° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US03969463 |
| Source dataset | uspto-grants-1976_07 |
| ORD ID | ord-4f71908a15054513bdc860f42b9d733d |
| Source note | uspto-grants-1976_07 |