Hydroxyamine hydrochloride → 2-Phenylpyrazolo[1,5-a]pyridine-3-carbaldehyde oxime hydrochloride

HRID 1650747Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1650747
[C:1]1([C:7]2[C:15]([CH:16]=O)=[C:10]3[CH:11]=[CH:12][CH:13]=[CH:14][N:9]3[N:8]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[ClH:18].[NH2:19][OH:20]>C(O)C>[ClH:18].[C:1]1([C:7]2[C:15]([CH:16]=[N:19][OH:20])=[C:10]3[CH:11]=[CH:12][CH:13]=[CH:14][N:9]3[N:8]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Komponenten

4

Edukt 2

HCID 443297Hydroxyamine hydrochlorideHCID 151581792-Phenylpyrazolo[1,5-a]pyridine-3-carbaldehyde

Produkt 1

HCID 867439182-Phenylpyrazolo[1,5-a]pyridine-3-carbaldehyde oxime hydrochlorideAusbeute 45,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

A mixture of 2-phenylpyrazolo[1,5-a]pyridine-3-carbaldehyde (0.5 g) and hydroxylamine hydrochloride (0 17 g) in ethanol (5 ml) was refluxed for 1.5 hours and evaporated in vacuo. The residue was triturated with ethyl acetate and recrystallized from a mixture of ethanol and ethyl acetate to give 2-phenylpyrazolo[1,5-a]pyridine-3-carbaldehyde oxime hydrochloride (0.28 g).

Aufarbeitung

  1. temperaturewas refluxed for 1.5 hours
  2. customevaporated in vacuo
  3. customThe residue was triturated with ethyl acetate
  4. customrecrystallized from a mixture of ethanol and ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-84ef26d2f27e461291d873c6a7075198
Quelldatensatz
uspto-grants-1990_05
Patentnummer
US04925849

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