| | Identification | Back Directory |  | [Name] 
 4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
 |  | [CAS] 
 13721-01-2
 |  | [Synonyms] 
 13721-01-2
 AURORA 17733
 TIMTEC-BB SBB000272
 VX770-INTERMEDIATES
 4-Quinolone-3-carboxylic acid
 4-Quinolone-3-carboxylic acid-D4
 4-Oxo-1,4-dihydroquinoline-3-carboxylicaci
 4-Oxo-1,4-dihydroquinoline Carboxylic Acid
 4-oxo-1,4-dihydro-3-quinolinecarboxylic acid
 1,4-Dihydro-4-oxo-3-quinolinecarboxylic acid
 4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
 1,4-DIHYDRO-4-OXO-QUINOLINE-3-CARBOXYLIC ACID
 1,2-Dihydro-4-oxo-quinoline-3-carboxylic acid
 3-Quinolinecarboxylic acid, 1,4-dihydro-4-oxo-
 1,4-Dihydro-4-oxoquinoline-3-carboxylicAcid>
 1,4-DIHYDRO-4-OXO-QUINOLINE-3-Carboxylic Acid (CAS-13721-01-2)
 4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID ISO 9001:2015 REACH
 |  | [Molecular Formula] 
 C10H7NO3
 |  | [MDL Number] 
 MFCD00498984
 |  | [MOL File] 
 13721-01-2.mol
 |  | [Molecular Weight] 
 189.17
 | 
 | Chemical Properties | Back Directory |  | [Melting point ] 
 269-270℃
 |  | [Boiling point ] 
 358℃
 |  | [density ] 
 1.429
 |  | [Fp ] 
 171℃
 |  | [storage temp. ] 
 Sealed in dry,Room Temperature
 |  | [solubility ] 
 DMSO (Slightly), Methanol (Slightly)
 |  | [form ] 
 Solid
 |  | [pka] 
 0.80±0.20(Predicted)
 |  | [color ] 
 Off-White to Light Yellow
 |  | [λmax] 
 310nm(DMSO)(lit.)
 |  | [InChI] 
 InChI=1S/C10H7NO3/c12-9-6-3-1-2-4-8(6)11-5-7(9)10(13)14/h1-5H,(H,11,12)(H,13,14)
 |  | [InChIKey] 
 ILNJBIQQAIIMEY-UHFFFAOYSA-N
 |  | [SMILES] 
 N1C2=C(C=CC=C2)C(=O)C(C(O)=O)=C1
 | 
 | Hazard Information | Back Directory |  | [Uses] 
 4-Oxo-1,4-dihydroquinoline Carboxylic Acid is a novel HIV-1 integrase strand transfer inhibitor.
 |  | [Synthesis] 
 
 General procedure for the synthesis of 4-oxo-1,4-dihydroquinoline-3-carboxylic acid from ethyl 4-hydroxyquinoline-3-carboxylate: ethyl 4-hydroxyquinoline-3-carboxylate (15 g, 69 mmol) was suspended in 2N sodium hydroxide solution (150 mL), and the reaction was stirred under refluxing conditions for 2 hours. After completion of the reaction, the mixture was cooled to room temperature and filtered to remove insoluble material. The filtrate was acidified to pH 4 with 2N hydrochloric acid and a white precipitate was precipitated. The precipitate was collected by filtration, washed several times with deionized water and finally dried under vacuum to afford 4-oxo-1,4-dihydroquinoline-3-carboxylic acid as a light white solid (10.5 g, 92% yield). The product was characterized by 1H NMR (DMSO-d6): δ 15.34 (s, 1H), 13.42 (s, 1H), 8.89 (s, 1H), 8.28 (d, J=8.0 Hz, 1H), 7.88 (m, 1H), 7.81 (d, J=8.4 Hz, 1H), 7.60 (m, 1H). |  | [References] 
 [1] Patent: US2008/90864,  2008,  A1. Location in patent: Page/Page column 7
 [2] Patent: WO2007/79139,  2007,  A2. Location in patent: Page/Page column 46; 47
 [3] Patent: US2012/309758,  2012,  A1. Location in patent: Page/Page column 61
 [4] Patent: US2015/231142,  2015,  A1. Location in patent: Paragraph 0352
 [5] Patent: WO2018/64632,  2018,  A1. Location in patent: Paragraph 00215; 00216
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