Reaktionsgleichung
[N+:1]([C:4]1[O:8][C:7]([C:9]2[C:13]([C:14](N)=[O:15])=[CH:12][N:11]([C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)[N:10]=2)=[CH:6][CH:5]=1)([O-:3])=[O:2].S(Cl)([Cl:25])=O.CN(C)C=O>C(Cl)(Cl)(Cl)Cl>[N+:1]([C:4]1[O:8][C:7]([C:9]2[C:13]([C:14]([Cl:25])=[O:15])=[CH:12][N:11]([C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)[N:10]=2)=[CH:6][CH:5]=1)([O-:3])=[O:2]Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
Heat 40 g of 3-(5-nitro-2-furyl)-1-phenylpyrazole-4-carboxamide together with 290 ml of thionyl chloride and 1 ml of dimethylformamide for 16 hours at boiling point. Cool the resulting solution, draw off the formed precipitate and wash it with thionyl chloride and with carbon tetrachloride to obtain an 89% yield of 3-(5-nitro-2-furyl)-1-phenylpyrazole-4-carboxylic acid chloride [m.p. 208° to 210° C (from dioxane)].
Aufarbeitung
- temperatureCool the resulting solution
- washwash it with thionyl chloride
Quellen und Nachweise
- ORD-Eintrag
- ord-d080d09299164235ae3fa50ae9ad0846
- Quelldatensatz
- uspto-grants-1978_06
- Patentnummer
- US04093812
Verknüpfte Notizen
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