Methyl 6-amino-5-nitropyridine-3-carboxylate → Methyl 5,6-diaminopyridine-3-carboxylate

HRID 649179Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 649179
[NH2:1][C:2]1[C:11]([N+:12]([O-])=O)=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][N:3]=1>CO.[C].[Pd]>[NH2:12][C:11]1[C:2]([NH2:1])=[N:3][CH:4]=[C:5]([CH:10]=1)[C:6]([O:8][CH3:9])=[O:7]

Komponenten

4

Edukt 1

HCID 13768248Methyl 6-amino-5-nitropyridine-3-carboxylate

Produkt 1

HCID 9920476Methyl 5,6-diaminopyridine-3-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418390HCID 178418390, VerbindungKatalysatorHCID 887MethanolLösungsmittel

Versuchsvorschrift

1 Gram of methyl 6-amino-5-nitronicotinate was dissolved in 10 ml of methanol. To this solution was added 0.1 g of 5%-palladium-carbon, then hydrogen gas was absorbed at room temperature under a normal pressure. The reaction was stopped when the stoichiometric amount of hydrogen was absorbed. The catalyst was removed from the reaction mixture by filtration, and the solvent was removed by evaporation. The residue thus obtained was recrystallized from ethanol to yield 0.8 g of methyl 5,6-diaminonicotinate in the form of yellow needle-like crystals. Melting point: 154°-155° C.

Aufarbeitung

  1. customhydrogen gas was absorbed at room temperature under a normal pressure
  2. customwas absorbed
  3. customThe catalyst was removed from the reaction mixture by filtration
  4. customthe solvent was removed by evaporation
  5. customThe residue thus obtained
  6. customwas recrystallized from ethanol

Quellen und Nachweise

ORD-Eintrag
ord-0dd86a8cbda34bd3b0441db805319887
Quelldatensatz
uspto-grants-1988_04
Patentnummer
US04738970

Notizen zur Reaktion

Wird geladen…