2-Hydrazinoethanol → 6-[2-(2-Hydroxyethyl)-5-methyl-3-oxo-2,3,4,5-tetrahydropyridazin-6-yl]-1-methyl-1,2,3,4-tetrahydroquinolin-2-one

HRID 128014

Reaktionsgleichung

Reaktionsgleichung von HRID 128014
O=[C:2]([C:9]1[CH:10]=[C:11]2[C:16](=[CH:17][CH:18]=1)[N:15]([CH3:19])[C:14](=[O:20])[CH2:13][CH2:12]2)[CH:3]([CH3:8])[CH2:4][C:5]([OH:7])=O.[NH:21]([CH2:23][CH2:24][OH:25])[NH2:22]>C(O)C>[OH:25][CH2:24][CH2:23][N:21]1[C:5](=[O:7])[CH2:4][CH:3]([CH3:8])[C:2]([C:9]2[CH:10]=[C:11]3[C:16](=[CH:17][CH:18]=2)[N:15]([CH3:19])[C:14](=[O:20])[CH2:13][CH2:12]3)=[N:22]1

Komponenten

4

Edukt 2

HCID 80172-HydrazinoethanolHCID 155745774-Oxo-4-(1-methyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)-3-methylbutanoic acid

Produkt 1

HCID 234715436-[2-(2-Hydroxyethyl)-5-methyl-3-oxo-2,3,4,5-tetrahydropyridazin-6-yl]-1-methyl-1,2,3,4-tetrahydroquinolin-2-oneAusbeute 80,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

A solution of 2.72 g of 4-oxo-4-(1-methyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)-3-methylbutanoic acid and 1.5 g of 2-hydrazinoethanol in 30 ml of ethanol was heated under reflux on a water bath for 2 hours. The reaction mixture was concentrated under reduced pressure and water was added to the residue. The precipitated crystals were filtered off and recrystallized from isopropanol to give 2.5 g of 6-[2-(2-hydroxyethyl)-5-methyl-3-oxo-2,3,4,5-tetrahydropyridazin-6-yl]-1-methyl-1,2,3,4-tetrahydroquinolin-2-one as colorless crystals, melting at 171°-173° C.

Aufarbeitung

  1. temperatureunder reflux on a water bath for 2 hours
  2. concentrationThe reaction mixture was concentrated under reduced pressure and water
  3. additionwas added to the residue
  4. filtrationThe precipitated crystals were filtered off
  5. customrecrystallized from isopropanol

Quellen und Nachweise

ORD-Eintrag
ord-7e0bac69001e4998af08aa82ba068df7
Quelldatensatz
uspto-grants-1981_03
Patentnummer
US04258185

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