Hydrochloric Acid → (4-nitro-1H-pyrazol-1-yl)acetaldehyde
Reaktionsgleichung
C[O:2][CH:3](OC)[CH2:4][N:5]1[CH:9]=[C:8]([N+:10]([O-:12])=[O:11])[CH:7]=[N:6]1.Cl>C1COCC1>[N+:10]([C:8]1[CH:7]=[N:6][N:5]([CH2:4][CH:3]=[O:2])[CH:9]=1)([O-:12])=[O:11]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 80 °C
Versuchsvorschrift
To a solution of 1-(2,2-dimethoxyethyl)-4-nitro-1H-pyrazole (2.65 g, 13.2 mmol) in THF (34 mL), a 2N aq. HCl-solution (60 mL, 120 mmol) was added dropwise. After stirring at 80° C. for 2 h, the reaction mixture was allowed to reach rt and freeze-dried overnight to yield 2-(4-nitro-1H-pyrazol-1-yl)acetaldehyde which was used as an yellow oil in the next step without further purification. LC-MS conditions B: tR=0.24 min, [M+H]+=no ionization.
Aufarbeitung
- customto reach rt
- customfreeze-dried overnight
Quellen und Nachweise
- ORD-Eintrag
- ord-841af28254d842339ab24bd2f95d9793
- Quelldatensatz
- uspto-grants-2016_04
- Patentnummer
- US09303023B2
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