HCID 11805918, Verbindung → Flavan
Reaktionsgleichung
[O:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][CH:2]1[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1>C(O)(=O)C.[C].[Pd]>[O:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH2:4][CH2:3][CH:2]1[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1Komponenten
4
Edukt 1
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 2
Versuchsvorschrift
The flav-3-ene was catalytically hydrogenated in acetic acid (60 ml) using 10% palladium carbon catalyst (150 mg) at room temperature and a atmospheric pressure. 750 ml hydrogen was absorbed over 3 hr. The reaction mixture was filtered, diluted with water, extracted with toluene, and the evaporated extract chromatographed on neutral alumina, eluting with toluene. The product was recrystallised from ethanol yielding flavan (2.75 g) m.pt. 43°-44° C.