Ethyl 2-bromo-3-(4-methoxyphenyl)-3-oxopropanoate → HCID 59587379, Verbindung

HRID 1410431Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1410431
Br[CH:2]([C:8]([C:10]1[CH:15]=[CH:14][C:13]([O:16][CH3:17])=[CH:12][CH:11]=1)=[O:9])[C:3]([O:5][CH2:6][CH3:7])=[O:4].[F:18][C:19]1[CH:27]=[CH:26][CH:25]=[C:24]([F:28])[C:20]=1[C:21]([O-:23])=[O:22].[Na+]>C(O)C.CCOC(C)=O.O>[F:18][C:19]1[CH:27]=[CH:26][CH:25]=[C:24]([F:28])[C:20]=1[C:21]([O:23][CH:2]([C:3]([O:5][CH2:6][CH3:7])=[O:4])[C:8]([C:10]1[CH:15]=[CH:14][C:13]([O:16][CH3:17])=[CH:12][CH:11]=1)=[O:9])=[O:22]

Komponenten

6

Edukt 2

HCID 13048360Ethyl 2-bromo-3-(4-methoxyphenyl)-3-oxopropanoateHCID 23698872Sodium 2,6-difluorobenzoate

Produkt 1

HCID 59587379HCID 59587379, VerbindungAusbeute 96,7 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 702EthanolLösungsmittelHCID 962WaterLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

A solution of ethyl 2-bromo-3-(4-methoxyphenyl)-3-oxopropanoate (0.090 g, 0.3 mmol) and sodium 2,6-difluorobenzoate (0.054 g, 0.30 mmol) in ethanol (2 mL) was heated at 120° C. in the microwave for 10 minutes. The reaction mixture was diluted with EtOAc (25 mL) and water (25 mL). The organic phase was washed with water and brine, dried over MgSO4 and the solvent evaporated in vacuo. The residue was purified by silica gel column chromatography using a gradient of 0-40% EtOAc in hexanes to afford 3-ethoxy-1-(4-methoxyphenyl)-1,3-dioxopropan-2-yl 2,6-difluorobenzoate (0.108 g, 0.29 mmol, 96%) as a clear film. 1H NMR (CDCl3) δ 1.27 (3H, t), 3.89 (3H, s), 4.30 (2H, m), 6.47 (1H, s), 6.97 (4H, m), 7.46 (1H, m), 8.06 (2H, d). LCMS (1) Rt: 2.26 min; m/z (ES+) 379.

Aufarbeitung

  1. washThe organic phase was washed with water and brine
  2. dry with materialdried over MgSO4
  3. customthe solvent evaporated in vacuo
  4. customThe residue was purified by silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-93028ac114b047ec97c41764a8ee2067
Quelldatensatz
uspto-grants-2014_12
Patentnummer
US08921544B2

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