Diethyl (ethoxymethylene)malonate → 6,7-dihydro-9-fluoro-1-oxo-5-trifluoromethyl-1H,5H-benzo[ij]quinolizine-2-carboxylic acid

HRID 1414322Notes

Reaction equation

HRID 1414322 reaction equation
[F:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[NH:8][CH:7]([C:12]([F:15])([F:14])[F:13])[CH2:6][CH2:5]2.C([O:18][C:19](=[O:30])[C:20](=[CH:26]OCC)[C:21](OCC)=[O:22])C>>[F:1][C:2]1[CH:11]=[C:10]2[C:9]3[N:8]([CH:26]=[C:20]([C:19]([OH:30])=[O:18])[C:21]2=[O:22])[CH:7]([C:12]([F:13])([F:15])[F:14])[CH2:6][CH2:5][C:4]=3[CH:3]=1

Participants

3

Reactant 2

HCID 6871Diethyl (ethoxymethylene)malonateHCID 21445341HCID 21445341, compound

Product 1

HCID 130943696,7-dihydro-9-fluoro-1-oxo-5-trifluoromethyl-1H,5H-benzo[ij]quinolizine-2-carboxylic acid

Procedure

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.

Workup

  1. customthe solid product is recrystallized from N,N-dimethyl formamide

Sources & evidence

ORD record
ord-1f39f26141dc4a38b8bce7acc33fdc2e
Source dataset
uspto-grants-1977_01
Patent number
US04001243

Reaction notes

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