5-Methyl-2-(4-methylphenyl)pyrazolidin-3-one → 3-Methyl-1-(4-methylphenyl)-1H-pyrazol-5-ol
Reaktionsgleichung
[CH3:1][CH:2]1[CH2:6][C:5](=[O:7])[N:4]([C:8]2[CH:13]=[CH:12][C:11]([CH3:14])=[CH:10][CH:9]=2)[NH:3]1.N([O-])=O.[Na+]>>[CH3:1][C:2]1[NH:3][N:4]([C:8]2[CH:13]=[CH:12][C:11]([CH3:14])=[CH:10][CH:9]=2)[C:5](=[O:7])[CH:6]=1Komponenten
3
Versuchsvorschrift
7 parts of 3-methyl-1-(4'-methylphenyl)-5-pyrazolidone are treated in a similar manner to that described in Example 1. The actual weight yield is 6.3 g of strength 91.3% (determined by titration with sodium nitrite solution which represents a yield of 88% of 3-methyl-1-(4'-methylphenyl)-5-pyrazolone.
Quellen und Nachweise
- ORD-Eintrag
- ord-8a5e9de7d5d84922bd89a0b6033f0780
- Quelldatensatz
- uspto-grants-1978_03
- Patentnummer
- US04081597
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