3-Quinolinecarboxylic acid, 4-chloro-8-methoxy-, ethyl ester → HCID 67250843, compound
Reaction equation
[CH2:1]([O:3][C:4]([C:6]1[CH:7]=[N:8][C:9]2[C:14]([C:15]=1Cl)=[CH:13][CH:12]=[CH:11][C:10]=2[O:17][CH3:18])=[O:5])[CH3:2].[O:19]1[CH2:23][CH2:22][CH:21]([NH2:24])[CH2:20]1>>[CH2:1]([O:3][C:4]([C:6]1[CH:7]=[N:8][C:9]2[C:14]([C:15]=1[NH:24][CH:21]1[CH2:22][CH2:23][O:19][CH2:20]1)=[CH:13][CH:12]=[CH:11][C:10]=2[O:17][CH3:18])=[O:5])[CH3:2]Participants
3
Procedure
4-Chloro-8-methoxy-quinoline-3-carboxylic acid ethyl ester (300 mg, 1.13 mmol) was treated with tetrahydro-furan-3-ylamine following general procedure B to afford 8-methoxy-4-(tetrahydro-furan-3-ylamino)-quinoline-3-carboxylic acid ethyl ester (275 mg). Thus obtained amino-ester was hydrolyzed to the corresponding acid in quantitative yield using general procedure D and then transformed into the corresponding ethylamide (190 mg) following general procedure E. The above ethylamide (0.6 mmol) was subjected to reaction with methyl chloroformate according to general procedure F to furnish 3-ethyl-7-methoxy-1-(tetrahydro-furan-3-yl)-1H-pyrimido[5,4-c]quinoline-2,4-dione (10 mg). LCMS: m/z 342 [M+1]+.
Sources & evidence
- ORD record
- ord-ac072a1598084161972b5a42cee06f8f
- Source dataset
- uspto-grants-2014_10
- Patent number
- US08853226B2
Reaction notes
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