2-(4-Fluorobenzyl)acetoacetic acid ethyl ester → HCID 68780079, Verbindung

HRID 2266492Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2266492
[CH3:1][O:2][C:3](=[O:14])[CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([Cl:12])=[C:8]([NH2:13])[CH:7]=1.C([O:17][C:18](=O)[CH:19]([CH2:23][C:24]1[CH:29]=[CH:28][C:27]([F:30])=[CH:26][CH:25]=1)[C:20](=O)[CH3:21])C>O>[CH3:1][O:2][C:3](=[O:14])[CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([Cl:12])=[C:8]2[C:7]=1[C:20]([CH3:21])=[C:19]([CH2:23][C:24]1[CH:25]=[CH:26][C:27]([F:30])=[CH:28][CH:29]=1)[C:18](=[O:17])[NH:13]2.[CH3:1][O:2][C:3](=[O:14])[CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([Cl:12])=[C:8]2[C:7]=1[C:18](=[O:17])[C:19]([CH2:23][C:24]1[CH:25]=[CH:26][C:27]([F:30])=[CH:28][CH:29]=1)=[C:20]([CH3:21])[NH:13]2

Komponenten

5

Edukt 2

HCID 27695652-(4-Fluorobenzyl)acetoacetic acid ethyl esterHCID 66717604Methyl 2-(3-amino-4-chlorophenoxy)acetate

Produkt 2

HCID 68780079HCID 68780079, VerbindungHCID 68787407HCID 68787407, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

A mixture of (3-amino-4-chlorophenoxy)acetic acid methyl ester (1.5 g), 2-(4-fluorobenzyl)-3-oxobutyric acid ethyl ester (1.7 g) and polyphosphoric acid (15 g) was heated at 100° C. for 3 hours. The mixture was cooled to room temperature, diluted with water and extracted with ethyl acetate. The combined extracts were washed with water and saturated aqueous sodium chloride solution and then dried over magnesium sulfate. The solvent was removed under reduced pressure and the residue purified by column chromatography on silica gel, eluting with a mixture of ethyl acetate and cyclohexane (3:7 by volume) to afford [8-chloro-3-(4-fluorobenzyl)-4-methyl-2-oxo-1,2-dihydroquinolin-5-yloxy]acetic acid methyl ester as a yellow-brown solid, 0.13 g and [8-chloro-3-(4-fluorobenzyl)-2-methyl-4-oxo-1,4-dihydroquinolin-5-yloxy]acetic acid methyl ester as a brown oil, 0.21 g.

Aufarbeitung

  1. temperatureThe mixture was cooled to room temperature
  2. extractionextracted with ethyl acetate
  3. washThe combined extracts were washed with water and saturated aqueous sodium chloride solution
  4. dry with materialdried over magnesium sulfate
  5. customThe solvent was removed under reduced pressure
  6. customthe residue purified by column chromatography on silica gel
  7. washeluting with a mixture of ethyl acetate and cyclohexane (3:7 by volume)

Quellen und Nachweise

ORD-Eintrag
ord-fdbfb1306df54530816d303ce07253fb
Quelldatensatz
uspto-grants-2010_12
Patentnummer
US07858640B2

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