Semicarbazide hydrochloride → 2-Phenylpyrazolo[1,5-a]pyridine-3-carbaldehyde semicarbazone
Reaktionsgleichung
[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.Cl.[NH2:19][NH:20][C:21]([NH2:23])=[O:22]>C(O)C>[C:1]1([C:7]2[C:15]([CH:16]=[N:19][NH:20][C:21]([NH2:23])=[O:22])=[C:10]3[CH:11]=[CH:12][CH:13]=[CH:14][N:9]3[N:8]=2)[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A mixture of 2-phenylpyrazolo[1,5-a]pyridine-3-carbaldehyde (0.5 g) and semicarbazide hydrochloride (0.25 g) in ethanol (7 ml) was refluxed for 1 hour and then cooled. The resulting precipitates were filtered and recrystallized from a mixture of water and ethanol to give 2-phenylpyrazolo[1,5-a]pyridine-3-carbaldehyde semicarbazone (0.26 g).
Aufarbeitung
- temperaturewas refluxed for 1 hour
- temperaturecooled
- customThe resulting precipitates
- filtrationwere filtered
- customrecrystallized from a mixture of water and ethanol
Quellen und Nachweise
- ORD-Eintrag
- ord-d38ac34c54cd44648f76fdcb6d08fc71
- Quelldatensatz
- uspto-grants-1992_02
- Patentnummer
- US05087629
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