Reaktionsgleichung
[N+:1]([C:4]1[CH:5]=[CH:6][C:7]2[O:11][C:10]([C:12]([O:14][CH2:15][CH3:16])=[O:13])=[CH:9][C:8]=2[CH:17]=1)([O-])=O>CO.[Ni]>[NH2:1][C:4]1[CH:5]=[CH:6][C:7]2[O:11][C:10]([C:12]([O:14][CH2:15][CH3:16])=[O:13])=[CH:9][C:8]=2[CH:17]=1Komponenten
4
Edukt 1
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 2
Versuchsvorschrift
A solution of 2.3 g of ethyl 5-nitrobenzofuran-2-carboxylate in 60 ml of methanol is hydrogenated in the presence of Raney nickel. The catalyst is filtered off and the solution is concentrated. After customary working up, ethyl 5-aminobenzofuran-2-carboxylate, Rf 0.1 (dichloromethane/ethanol 9.5:0.5) is obtained; hydrochloride m.p. 246-248°.
Aufarbeitung
- filtrationThe catalyst is filtered off
- concentrationthe solution is concentrated
Quellen und Nachweise
- ORD-Eintrag
- ord-490c8e3ba36b4061b398ea79c6055a70
- Quelldatensatz
- uspto-grants-1999_11
- Patentnummer
- US05977112
Verknüpfte Notizen
Wird geladen…