Semicarbazide hydrochloride → 2-Phenylpyrazolo[1,5-a]pyridine-3-carbaldehyde semicarbazone

HRID 1534116Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1534116
[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]=1

Komponenten

4

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

  1. temperaturewas refluxed for 1 hour
  2. temperaturecooled
  3. customThe resulting precipitates
  4. filtrationwere filtered
  5. 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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