Lithium borohydride → HCID 10138256, Verbindung
Reaktionsgleichung
C([O:3][C:4]([C:6]1[C:14]2[CH2:13][CH2:12][N:11]([C:15]3[CH:20]=[CH:19][C:18]([N:21]4[CH:26]=[CH:25][CH:24]=[CH:23][C:22]4=[O:27])=[CH:17][CH:16]=3)[C:10](=[O:28])[C:9]=2[N:8]([C:29]2[CH:34]=[CH:33][C:32]([O:35][CH3:36])=[CH:31][CH:30]=2)[N:7]=1)=O)C.[Li+].[BH4-]>C1COCC1>[OH:3][CH2:4][C:6]1[C:14]2[CH2:13][CH2:12][N:11]([C:15]3[CH:20]=[CH:19][C:18]([N:21]4[CH:26]=[CH:25][CH:24]=[CH:23][C:22]4=[O:27])=[CH:17][CH:16]=3)[C:10](=[O:28])[C:9]=2[N:8]([C:29]2[CH:30]=[CH:31][C:32]([O:35][CH3:36])=[CH:33][CH:34]=2)[N:7]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To 1-(4-methoxy-phenyl)-7-oxo-6-[4-(2-oxo-2H -pyridin-1-yl)-phenyl]-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylic acid ethyl ester (0.2 g, 0.4 mmol) in THF (25 mL) was added 2M LiBH4 in THF (0.31 mL, 0.66 mmol) and the reaction was heated to reflux for 3 h. After extraction into EtOAc and washing with water and brine, the product crystallized out upon standing; High Resolution Mass Spec (M+H)+ for C25H23N4O4 443.1730.