Reaktionsgleichung
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([OH:8])=[CH:4][C:3]=1[C:9](=O)[CH2:10][CH:11]([CH3:13])[CH3:12].[N:15]([O-])=O.[Na+].O.O.[Sn](Cl)Cl>O.Cl>[OH:8][C:5]1[CH:4]=[C:3]2[C:2](=[CH:7][CH:6]=1)[NH:1][N:15]=[C:9]2[CH2:10][CH:11]([CH3:13])[CH3:12]Komponenten
6
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 2
Versuchsvorschrift
In an analogous manner to the procedure of Example XIV, 783 mg (4.05 mmol) of 1-(2-amino-5-hydroxyphenyl)-3-methyl-1-butanone in 30 ml of half-conc. hydrochloric acid are reacted with 294 mg (4.25 mmol) of sodium nitrite in 15 ml of water and 914 mg (4.05 mmol) of tin(II) chloride dihydrate in 15 ml of conc. hydrochloric acid to give 317 mg (41%) of 5-hydroxy-3-isobutyl-1H-indazole.
Quellen und Nachweise
- ORD-Eintrag
- ord-ac4c4b51e7d34aea93cc5e2f5f6ecc78
- Quelldatensatz
- uspto-grants-2003_08
- Patentnummer
- US06608049B2
Verknüpfte Notizen
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