1,5-Bis(4-hydroxyphenyl)-1,4-pentadien-3-one → 3-Pentanone, 1,5-bis(4-hydroxyphenyl)-
Reaktionsgleichung
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]=[CH:9][C:10](=[O:20])[CH:11]=[CH:12][C:13]2[CH:18]=[CH:17][C:16]([OH:19])=[CH:15][CH:14]=2)=[CH:4][CH:3]=1>C(O)(=O)C.[Pd]>[OH:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][CH2:9][C:10](=[O:20])[CH2:11][CH2:12][C:13]2[CH:14]=[CH:15][C:16]([OH:19])=[CH:17][CH:18]=2)=[CH:4][CH:3]=1Komponenten
4
Edukt 1
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 2
Versuchsvorschrift
A mixture of 20 g (0.075 mol) of 1,5-bis(4-hydroxyphenyl)penta 1,4-diene-3-one of Example 16 in 200 ml of glacial acetic acid and 1.5 g of 5% Pd/C was placed on a Parr hydrogenator for 2 hours under hydrogen. This reaction was repeated and the two solutions were filtered and evaporated to give a viscous oil (18 g). This was chromotographed on a silica gel column (Woelm) and eluted with CHCl3 :MeOH (95:5). The product (7.0 g) was recovered first and then 9.0 g of the corresponding alcohol.