5-Amino-4-cyanopyrazole → 6-Methylpyrazolo[1,5-a]pyrimidine-3-carbonitrile
Reaktionsgleichung
[NH2:1][C:2]1[NH:6][N:5]=[CH:4][C:3]=1[C:7]#[N:8].C(O[CH:12]=[C:13]([CH3:16])[CH:14]=O)C>>[CH3:16][C:13]1[CH:12]=[N:1][C:2]2[N:6]([N:5]=[CH:4][C:3]=2[C:7]#[N:8])[CH:14]=1Komponenten
3
Versuchsvorschrift
By the procedure described in Example 2, 5.40 g of 5-amino-4-pyrazolecarbonitrile is reacted with 5.70 g of 3-ethoxy-2-methylacrolein in 25 ml of glacial acid to give the desired product as colorless prisms, mp 193°-194° C.
Quellen und Nachweise
- ORD-Eintrag
- ord-3dcab277b08746e6b5e669bdc41f3ece
- Quelldatensatz
- uspto-grants-1992_12
- Patentnummer
- US05169850
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