2(5H)-Furanone, 5-hydroxy-4-methyl- → ethyl [4-methyl-6-oxopyridazin-1(6H)-yl]acetate

HRID 1947709Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1947709
O[CH:2]1[O:6][C:5](=O)[CH:4]=[C:3]1[CH3:8].Cl.[NH:10]([CH2:12][C:13]([O:15][CH2:16][CH3:17])=[O:14])[NH2:11]>C(O)C>[CH3:2][C:3]1[CH:8]=[N:11][N:10]([CH2:12][C:13]([O:15][CH2:16][CH3:17])=[O:14])[C:5](=[O:6])[CH:4]=1

Komponenten

4

Edukt 2

HCID 1153012(5H)-Furanone, 5-hydroxy-4-methyl-HCID 11593468Acetic acid, 2-hydrazinyl-, ethyl ester, hydrochloride (1:1)

Produkt 1

HCID 77231410ethyl [4-methyl-6-oxopyridazin-1(6H)-yl]acetate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

5-Hydroxy-4-methylfuran-2(5H)-one (1.19 g, 10.4 mmol) and ethyl hydrazinoacetate hydrochloride (1.61 g, 10.4 mmol) in 95% ethanol (20 mL) was refluxed for 2 h. Removal of the solvent in vacuo followed by purification using a Biotage Horizon® system (0-50% ethyl acetate/hexanes mixture) gave ethyl [4-methyl-6-oxopyridazin-1(6H)-yl]acetate as a yellow crystalline. LC/MS 219.2 (M+23).

Aufarbeitung

  1. customRemoval of the solvent in vacuo
  2. customfollowed by purification

Quellen und Nachweise

ORD-Eintrag
ord-ce6909f73aff4620aa9cbd906c15e233
Quelldatensatz
uspto-grants-2013_03
Patentnummer
US08399480B2

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