2-Methoxyethanol → 4-(2-methoxyethoxy)-3-[3-(3-methylphenyl)-1-oxo-2-propenyl]-6-methyl-2H-pyran-2-one

HRID 38303Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 38303
[OH:1][C:2]1[CH:7]=[C:6]([CH3:8])[O:5][C:4](=[O:9])[C:3]=1[C:10](=[O:20])[CH:11]=[CH:12][C:13]1[CH:18]=[CH:17][CH:16]=[C:15]([CH3:19])[CH:14]=1.[CH3:21][O:22][CH2:23][CH2:24]O.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OCC)=O)=NC(OCC)=O>O1CCCC1>[CH3:21][O:22][CH2:23][CH2:24][O:1][C:2]1[CH:7]=[C:6]([CH3:8])[O:5][C:4](=[O:9])[C:3]=1[C:10](=[O:20])[CH:11]=[CH:12][C:13]1[CH:18]=[CH:17][CH:16]=[C:15]([CH3:19])[CH:14]=1

Komponenten

6

Edukt 4

HCID 80192-MethoxyethanolHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 136367343HCID 136367343, Verbindung

Produkt 1

HCID 695121774-(2-methoxyethoxy)-3-[3-(3-methylphenyl)-1-oxo-2-propenyl]-6-methyl-2H-pyran-2-one

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

To a mixture of 0.81 g of 4-hydroxy-3-[3-(3-methylphenyl)-1-oxo-2-propenyl]-6-methyl-2H-pyran-2-one, 10 ml of tetrahydrofuran, 0.25 ml of 2-methoxyethanol, and 0.87 g of triphenylphosphine was added dropwise a solution of 0.57 g of diethyl azodicarboxylate in 6 ml of tetrahydrofuran, and this was stirred at room temperature overnight. The solvent was distilled off under reduced pressure, and the resulting residue was subjected to silica gel column chromatography to obtain 389 mg of 4-(2-methoxyethoxy)-3-[3-(3-methylphenyl)-1-oxo-2-propenyl]-6-methyl-2H-pyran-2-one [Compound No. (2a-24)] as a yellow oil.

Aufarbeitung

  1. distillationThe solvent was distilled off under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-b1cd3646254d4050ab310cf30269ebd8
Quelldatensatz
uspto-grants-2013_09
Patentnummer
US08524729B2

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